SUNLU High Toughness Resin
4.7Editor score
Five times higher elongation
Low shrinkage for accuracy
Widely compatible formula
In this guide
Flexible resin for 3D printing allows creators to produce parts that bend, compress, and absorb shock like real rubber or TPU materials. Choosing the right formulation ensures your prints maintain flexibility without becoming brittle or difficult to manufacture on standard LCD or SLA printers.
We evaluated ten leading flexible resins based on their Shore hardness, elongation at break, printability, and overall durability. Each product was assessed for its ability to resist cracking, handle impact, and provide a smooth surface finish suitable for functional prototypes and wearables.
Each selection below highlights specific strengths such as fast curing speeds, low odor, or exceptional rebound properties. Keep in mind that availability and stock levels can change frequently, so verify current details before placing your order for your next printing batch.
Top 3 Picks for Best Flexible Resin for 3D Printing
ANYCUBIC Ultra Tough Resin
4.7Editor score
Superb flexibility and resilience
Non-irritating skin sensation
Excellent impact resistance
Siraya Tech Rebound 55A
4.2Editor score
Fast rebound action
55A Shore hardness balance
No special cleaning required
Top 10 Best Flexible Resin for 3D Printing in 2026 Compared
The following table provides a side-by-side comparison of all ten selected resins, highlighting their key specifications, intended use cases, and primary performance characteristics to assist your decision-making process.
ProductsSpecificationsEditor scorePrice
Best Budget
Superflex 3D Printer Resin
Shore 80A Hardness
100% Elongation at Break
Fast 50um Layer Printing
ISO 10993-5 Certified
4.4Editor score
Editor's Choice
ANYCUBIC Ultra Tough Resin
Impact Resistance Flexibility
Gentle Skin Sensation
Direct Use or Additive
Robust Adaptability
4.7Editor score
Best Premium
SUNLU Flexible 3D Printer Resin
70A Shore Hardness
135% Elongation at Break
Minimal Odor Formula
Leak-proof Bottle Design
3.5Editor score
Siraya Tech Tenacious Highly Flexible
Soft Rubber-Like Feel
Enhanced Flexibility Rebound
High Impact Resistance
Excellent Resin Additive
4.7Editor score
ANYCUBIC Tough Resin 2.0
Enhanced Toughness
Strong Elongation Flexibility
Low-Odor Friendly Formulation
High Precision Minimal Shrinkage
4.6Editor score
SUNLU High Toughness 3D Printer Resin
High Toughness Performance
Better Accuracy Results
Low Shrinkage Rate
Low Odor 405UV
4.7Editor score
ELEGOO Tough 3D Printer Resin
High Toughness Resilience
Durable Strong Impact Resistance
Good Weather Resistance
Low Odor Non-Irritating
4.5Editor score
Siraya Tech Rebound 55A
Fast Rebound Action
55A Shore Hardness
Easy Printing Standard Clean
Versatile Prototyping Applications
4.2Editor score
ANYCUBIC Tough 3D Printer Resin 2.0
Unmatched Strength
Exceptional Stretch Flexibility
Low-Odor Pleasure Printing
Exceptional Accuracy Low Shrinkage
4.6Editor score
3D Printer Resin Flexible & Upgraded Tough
90A Shore Hardness
Tough Flexible Formula
High Precision Low Odor
Built for Makers Engineers
4.4Editor score
1. ANYCUBIC Ultra Tough Resin – Best Overall Flexible Resin for 3D Printing
ANYCUBIC Ultra Tough Resin
Shore Hardness Not Specified
1kg Bottle Size
Impact Resistant Formula
Skin Safe Cured Finish
The ANYCUBIC Ultra Tough Resin stands out as the top choice for users needing a balance of flexibility and durability. With a high rating of 4.7 stars, it is recognized for its outstanding toughness and ability to recover its original shape after deformation.
Pros
- Exceptional impact resistance
- Gentle on skin
- Works as additive
- Resilient under humidity
- Sharp detail retention
Cons
- Black color only
- Slightly higher cost
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This resin excels in creating articulated models that require seamless movement between parts. It also offers a non-irritating surface after curing, making it suitable for wearable items like earphone covers. Its formulation resists brittleness even in damp environments.
While it is priced slightly higher than some standard options, the enhanced durability and versatility justify the cost for professional users. It can be used directly or mixed with other resins to boost their toughness without altering the intended color significantly.
Choose this resin if you need reliable performance for functional prototypes or wearable projects. Its broad compatibility with LCD printers ensures you can use it across most desktop setups without adjusting your workflow significantly.
Superior Impact Resistance
This material withstands external forces well, ensuring your prints do not crack under stress or accidental drops during daily use.
Safe for Wearables
Once cured, the surface is gentle on skin, allowing for comfortable interaction with printed objects like cosplay props or accessories.
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2. SUNLU High Toughness Resin – Best Budget Flexible Resin for 3D Printing
SUNLU High Toughness Resin
5x Higher Elongation
1kg Grey Bottle
Low Viscosity Flow
Minimal Volume Shrinkage
SUNLU High Toughness Resin offers exceptional value with an elongation rate five times higher than standard resin. It holds a strong 4.7 rating for its ability to produce unbreakable models that resist cracking during washing and curing processes.
Pros
- Five times elongation over standard
- Low odor formula
- Wide printer compatibility
- Leak-proof bottle design
- Easy to clean prints
Cons
- Grey color limitation
- Limited color variants
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The low viscosity ensures better accuracy and shorter curing times, which improves overall print quality. Its low odor makes it comfortable to use in home or office environments without overwhelming fumes during operation.
While primarily available in grey, its performance benefits make it a top pick for functional parts. The leak-proof bottle design adds convenience during storage and transport to prevent waste or spills in your workspace.
Ideal for budget-conscious makers needing durability, this resin fits well into general-purpose printing workflows. Its compatibility with most LCD and SLA printers makes it a versatile addition to any material collection.
Enhanced Durability
This resin is designed to be unbreakable and durable, significantly improving the success rate of structural and solid printed models.
Low Shrinkage Rate
Reduced volume shrinkage means your printed parts maintain their intended dimensions and shape with minimal distortion after curing.
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3. Siraya Tech Rebound 55A – Best Premium Flexible Resin for 3D Printing
Siraya Tech Rebound 55A
55A Shore Hardness
Fast Rebound Action
Standard Isopropyl Clean
High Elasticity Mix
Siraya Tech Rebound 55A is designed for applications requiring quick shape recovery and high elasticity. It provides significantly faster rebound than standard resins, making it a premium choice for shock-absorbing components and gaskets.
Pros
- Very fast rebound action
- Easy printing standard clean
- Good elasticity strength mix
- No A/B mixing required
- Ideal for shock absorption
Cons
- Higher price point
- Limited long-term testing data
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Unlike complex elastomers, this resin prints on standard LCD and DLP printers without special cleaning procedures. It offers a balanced mix of flexibility and structural integrity suitable for industrial prototyping and protective equipment designs.
Though long-term performance testing is ongoing, initial results show good resilience during compression cycles. The price reflects its specialized formulation for high-rebound tasks that standard flexible resins might not handle as effectively.
Select this resin if your project demands rapid elastic recovery and professional-grade shock absorption. It is a specialized tool for makers who need precise control over the rebound characteristics of their finished parts.
Rapid Elastic Recovery
The material returns to its original shape quickly after compression, making it excellent for parts that endure repeated impacts or pressure.
Standard Workflow Compatible
It cleans with standard isopropyl alcohol methods, integrating seamlessly into existing printing setups without requiring extra chemicals or steps.
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4. Siraya Tech Tenacious Flex Black – Best Flexible Rubber Resin for 3D Printing
Siraya Tech Tenacious Flex Black
500g Bottle Size
Black Color Only
Soft Rubber-Like Feel
High Impact Resistance
Siraya Tech Tenacious Flex Black provides a significantly softer and more rubber-like feel than previous versions. It is rated 4.7 for its incredible elasticity and ability to withstand extreme bending without permanent deformation.
Pros
- Softer than classic Tenacious
- Incredible elasticity
- High impact resistance
- Resists cracks and cracks
- Excellent additive for tough
Cons
- Smaller bottle size
- Black color only
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This resin is engineered for dynamic prints that need to absorb shock or handle impact. It resists deformations and cracks, making it a reliable choice for protective components or resilient prototypes in demanding environments.
It can also be used as an additive to boost the flexibility of other tough resins. The small 500g bottle is convenient for testing or small batches, though it may not be as cost-effective for large production runs.
Choose this formulation if you need a soft, rubbery texture for gaskets or grips. Its specialized design for flexibility ensures your parts maintain integrity even under repeated stress or mechanical action.
Extreme Flexibility
This formulation allows for extreme bending and compression, ensuring your prints return to their original shape without damage or cracking.
Versatile Additive
Mixing it with other resins can significantly enhance their impact resistance and flexibility, improving the properties of existing materials.
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5. Superflex 3D Printer Resin – Best Clear Flexible Resin for 3D Printing
Superflex 3D Printer Resin
Shore 80A Hardness
Clear Transparent Color
ISO 10993-5 Safe
Fast 1.7sec Printing
Superflex 3D Printer Resin is known for its fast printing speeds and ISO 10993-5 certification for safety. It achieves a Shore 80A hardness, making it ideal for cushioning and shock absorption in medical or ergonomic applications.
Pros
- Very fast layer printing
- ISO medical grade tested
- Clear transparent finish
- Balanced softness and strength
- Simulates hard flexible rubber
Cons
- Smaller bottle volume
- Clear color only
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The clear color allows for visual inspection of internal structures, which is useful for functional prototypes. Its balanced softness and strength simulate rubber well, ensuring prints do not tear easily during use or cleaning.
Printing 50um layers in just 1.7 seconds saves significant time and electricity costs. However, the 500g bottle size may require multiple purchases for large projects, which could impact overall budget efficiency.
Use this resin if you need a clear, safe, and durable material for prototypes that interact with skin or require transparency. Its fast printing capability makes it efficient for high-volume or rapid iteration workflows.
Fast Printing Speed
Its formulation allows printing at high speeds, enhancing productivity for farms or users with multiple machines running simultaneously.
Medical Grade Safety
The resin meets ISO 10993-5 standards when fully post-cured, making it suitable for biomedical or skin-contact applications safely.
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6. ANYCUBIC Tough Resin 2.0 – Best All-Round Flexible Resin for 3D Printing
ANYCUBIC Tough Resin 2.0
Low-Odor Friendly
High Precision Minimal Shrinkage
Upgraded Flexural Strength
Grey Color Option
ANYCUBIC Tough Resin 2.0 offers upgraded flexural strength and high precision with minimal shrinkage. It has a rating of 4.6 for its ability to resist peeling and cracking under cyclic vibrations or stress.
Pros
- Low-odor friendly formula
- High precision minimal shrinkage
- Resists cracking and peeling
- Compatible with 4K 8K
- Green environmental choice
Cons
- Grey color only
- Standard 1kg volume
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The low-odor formulation reduces volatile organic compounds, creating a comfortable printing environment. Its high precision ensures clear details and smooth surfaces, which is vital for industry parts requiring tight tolerances.
While primarily available in grey, it is designed for broad compatibility with LCD and SLA printers. The eco-friendly aspect makes it appealing for users concerned about volatile emissions during printing operations.
Choose this resin for high-strength model production where accuracy matters. It balances toughness and precision well, ensuring your final parts are durable and detailed without requiring extensive post-processing.
Minimal Shrinkage
It maintains low shrinkage rates, ensuring printed models keep their intended dimensions and clear details without warping after curing.
Low-Odor Formula
The composition is gentle on users, reducing strong smells and creating a more pleasant environment for extended printing sessions.
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7. SUNLU Flexible 3D Printer Resin – Best Soft Flexible Resin for 3D Printing
SUNLU Flexible 3D Printer Resin
70A Shore Hardness
135% Elongation
Low Shrinkage Rate
Minimal Aromatic Odor
SUNLU Flexible 3D Printer Resin offers a 70A hardness with 135% elongation, creating a soft yet strong flexible material. It is designed for bendable items that resist breaking under stress or impact during handling.
Pros
- Perfect balance of softness
- Minimal odor during print
- Low shrinkage accuracy
- Good chemical tolerance
- Leak-proof packaging
Cons
- Lower rating than others
- Gray color only
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The resin features low shrinkage for accurate size and shape retention. It also has minimal odor and low chemical tolerance, making it stable and reliable for most manufacturing needs without significant deformation.
While it has a lower rating compared to other products, it remains a functional option for standard flexible applications. The leak-proof bottle design ensures safe transport and storage for your 1kg supply.
Use this resin if you need soft, flexible prototypes that are affordable and reliable. Its stability and low shrinkage make it suitable for parts that require consistent dimensions and long-term durability.
Balanced Softness
The material simulates rubber or durable flexible prototypes, offering the right mix of softness and strength for general use cases.
Low Shrinkage Rate
During curing, the resin shrinks minimally, ensuring accurate dimensions and shapes for your printed parts without deformation.
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8. ELEGOO Tough 3D Printer Resin – Best Black Flexible Resin for 3D Printing
ELEGOO Tough 3D Printer Resin
Shore 84.7D Hardness
Low Odor Formula
Strong Impact Resistance
Fine Texture Finish
ELEGOO Tough 3D Printer Resin combines high toughness with a Shore hardness of 84.7D, offering excellent flexibility and resilience. It is rated 4.5 for its ability to recover quickly after deformation from external forces.
Pros
- Excellent flexibility resilience
- Strong damage resistance
- Fine texture finish
- Withstands tension stress
- Drill without cracking
Cons
- Black color only
- High hardness level
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The material is strong enough to be drilled without cracking, making it ideal for tools and engineering prototypes. Its fine texture and weather resistance ensure the parts perform well even in humid or extreme temperature conditions.
While the hardness is higher than typical flexible resins, this ensures it is tough enough for demanding applications. The low odor and non-irritating formula make it safe for prolonged use in workshops or home offices.
Choose this resin for parts that need to be robust and functional. It is especially useful for printing jigs, fixtures, or end-use products that require high performance and durability over time.
High Impact Resistance
The resin withstands impacts well, making it very suitable for structural parts, tools, and other high-performance models that see heavy use.
Excellent Weather Resistance
It shows resistance to brittleness and corrosion even in high humidity, ensuring consistent performance under varied environmental conditions.
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9. ANYCUBIC Tough 3D Printer Resin 2.0 – Best Clear Flexible Resin for 3D Printing
ANYCUBIC Tough 3D Printer Resin 2.0
Industry-Wide Compatibility
Clear Transparent Color
Low-Odor Design
Exceptional Accuracy
ANYCUBIC Tough 3D Printer Resin 2.0 Clear version offers high precision with exceptional stretch and flexibility. It is rated 4.6 for reducing the likelihood of breakage in delicate or thin models effectively.
Pros
- High precision minimal shrinkage
- Resistant to breakage
- Clear transparent finish
- Environmentally friendly design
- Compatible with 4K 8K
Cons
- Clear color only
- Specific color availability
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The clear color is useful for parts where internal details need to be visible. Its design cuts down volatile organic compounds, making it an environmentally friendly option for users seeking a comfortable printing environment.
This resin is compatible with a wide range of LCD and SLA printers, ensuring broad usability. While it is designed for high hardness and precision, it maintains enough flexibility to resist damage from drops.
Select this resin for clear, accurate parts that need to be durable. It is perfect for technical applications and detailed models where visual inspection of the print quality is essential.
Exceptional Accuracy
It ensures high precision prints with minimal shrinkage, allowing you to achieve crisp details and maintain intended part dimensions accurately.
Low-Odor Design
The composition is gentle on users and cuts down VOCs, making it a safer and more pleasant option for extended printing sessions.
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10. 3D Printer Resin Flexible & Upgraded Tough – Best Soft Rubber Resin for 3D Printing
3D Printer Resin Flexible & Upgraded Tough
90A Shore Hardness
Soft TPU Like Feel
High Tear Resistance
Flexible & Upgraded Formula
This 3D Printer Resin features a 90A Shore hardness that simulates rubber and TPU, allowing repeated bending without breaking. It is rated 4.4 for its strong tear resistance and reliable performance under stress.
Pros
- Simulates rubber toughness
- High tear resistance
- Foldable without breaking
- High precision detail
- Ideal for shock absorption
Cons
- Black color only
- Slightly higher price
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It is a go-to choice for gaskets, toy tires, and ergonomic grips that need to stay flexible without tearing. The formula offers high precision, ensuring you do not have to sacrifice detail for flexibility in your parts.
The resin keeps its cool under stress, bending where ordinary resins snap. This makes it a practical choice for engineering prototypes and frequently handled parts that demand reliable durability and flexibility.
Choose this resin if you need realistic rubber-like flexibility for functional use. It works great on most LCD and DLP printers, making it a versatile solution for a wide range of mechanical applications.
Soft Rubber TPU Feel
The product can be folded and bent repeatedly without breaking, providing both softness and strength for realistic flexible components.
High Tear Resistance
It is designed for real-world use, handling repeated stress and staying tough enough not to rip or wear out during normal operations.
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Buying Guide – How to Choose the Best Flexible Resin for 3D Printing
Choosing the right flexible resin involves understanding key factors such as Shore hardness, elongation, and printability to ensure your parts meet performance requirements.
Shore Hardness
Shore hardness determines the softness of the printed part. A lower A value like 55A is very soft and rubbery, while 80A or 90A is harder and more durable for mechanical use.
Select a Shore hardness that matches the tactile needs of your application, balancing between softness and durability.
Elongation at Break
Elongation at break measures how much a part can stretch before breaking. Higher elongation percentages like 135% indicate better flexibility and resistance to cracking under tension.
Look for high elongation values if your prints need to bend significantly without snapping or losing their shape.
Printability and Curing
Printability refers to how well the resin cures and flows during printing. Low viscosity resins cure faster and provide better accuracy, reducing the time and effort required for support removal.
Choose resins with fast curing times and standard cleaning requirements to streamline your workflow and avoid extra processing steps.
Durability and Impact Resistance
Durability measures how well the part withstands drops or external force. High impact resistance is essential for functional prototypes or wearable items that face daily handling.
Prioritize resins labeled as tough or impact-resistant if your parts will be used in demanding environments.
Safety and Odor
Flexible resins can emit fumes, so safety is paramount. Low-odor formulas reduce volatile organic compounds, creating a safer and more comfortable printing environment.
Opt for low-odor resins and ensure proper ventilation to protect your health and workspace air quality.
Color Options
While black and gray are standard, some resins like clear options allow for visual inspection of parts. Your choice depends on whether transparency is needed for design or functional reasons.
Check color availability before purchasing to ensure it meets your visual or aesthetic requirements for the project.
Compatibility
Most flexible resins are compatible with 405nm LCD and DLP printers. Ensure your printer supports the resin's wavelength to avoid curing issues or failed prints.
Verify compatibility details on the product page to ensure the resin works with your specific printer model.
How to Use and Care for Your Flexible Resin for 3D Printing
Before printing, shake the bottle gently to ensure uniform mixing of the resin. Pour it carefully into your printer's tank, avoiding bubbles that could affect layer adhesion and surface quality.
Use appropriate supports for flexible prints to prevent sagging or distortion during curing. After printing, wash the part with isopropyl alcohol using gentle brushing to remove uncured material without damaging delicate features.
Post-cure your prints fully under UV light to achieve maximum strength and stability. Store the resin in a cool, dark place in its leak-proof bottle to prevent degradation and extend its shelf life for future use.
Frequently Asked Questions
What makes flexible resin different from standard resin?
Flexible resin is formulated with elastomers that allow the printed part to bend and stretch without breaking. Standard resin is rigid and brittle, making flexible resin ideal for parts that need to absorb shock or interact with the body.
How do I prevent flexible resin from sticking to the FEP?
Flexible resin can be sticky due to its elasticity. Use an FEP film with low adhesion, ensure your printer is well-calibrated, and consider reducing peel times to minimize sticking during the print process.
Can I use standard supports with flexible resin?
Yes, but flexible resin may require thicker supports to prevent detachment or sagging. Using a slightly higher support density can help maintain structural integrity during the curing process.
Is flexible resin safe for skin contact?
Many flexible resins become skin-safe after full curing. Always check if the resin has safety certifications like ISO 10993-5 to ensure it is non-toxic and safe for wearable applications.
How long should I cure flexible resin for?
Flexible resin usually requires a full post-cure, often longer than standard resin. Follow the manufacturer's guidelines, typically 10 to 30 minutes under UV light, to ensure the part reaches its final properties.
Can I mix flexible resin with standard resin?
Yes, some flexible resins can be mixed with standard resins to adjust hardness. However, test small batches first to ensure compatibility and maintain desired printing quality and flexibility.
Final Thoughts on Choosing the Best Flexible Resin for 3D Printing
The ten resins reviewed here offer a wide range of flexibility, hardness, and durability for various applications. Whether you need a soft rubber-like feel or a tough impact-resistant part, there is a product designed to meet your needs.
Prioritize factors like Shore hardness, elongation, and printability when selecting a resin. Understanding your specific requirements will help you choose a material that delivers consistent results for your projects.
Always check current availability and stock before making a purchase. Prices and product versions may change, so verify the latest details to ensure you get the right material for your next print.