Siraya Tech Tenacious Flexible
4.7Editor score
Softer rubber-like feel
Fast rebound elasticity
High impact resistance
In this guide
Flexible resin for 3D printing allows creators to produce parts that bend without breaking. This category includes materials designed to mimic rubber or TPU, offering shock absorption and durability for functional prototypes.
We compared ten leading flexible resins based on shore hardness, elongation at break, print speed, and user feedback. Our analysis covers compatibility with LCD, DLP, and SLA printers to ensure broad usability.
Each pick highlights specific strengths like impact resistance or low odor. Prices and availability change frequently, so verify current details before purchasing to ensure you get the best value for your project.
Top 3 Picks for Best Flexible Resin for 3D Printing
ANYCUBIC Ultra Tough Resin
4.7Editor score
Exceptional impact resistance
High flexibility and resilience
Non-irritating skin sensation
Siraya Tech Rebound 55A
4.2Editor score
Fast rebound action
55A shore hardness
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 flexible resins. It highlights key specifications such as shore hardness, color, weight, and compatibility to help you make an informed decision.
ProductsSpecificationsEditor scorePrice
Best Budget
Superflex 3D Printer Resin
Shore 80A hardness
500g clear bottle
Fast 50um printing
ISO 10993-5 tested
4.4Editor score
Editor's Choice
ANYCUBIC Ultra Tough Resin
High impact resistance
1kg black bottle
Suitable for hair textures
Can be used as additive
4.7Editor score
Best Premium
SUNLU Flexible 3D Printer Resin
70A shore hardness
1000g gray bottle
Minimal odor formula
Leak-proof bottle design
3.5Editor score
Siraya Tech Tenacious Flexible
Soft rubber-like feel
500g flex black
Enhanced rebound elasticity
Good resin additive
4.7Editor score
ANYCUBIC Tough Resin 2.0
Upgraded flexural strength
1kg grey bottle
Low-odor friendly formula
Industry application ready
4.6Editor score
SUNLU High Toughness Resin
Enhanced flexible formula
1KG grey bottle
Low viscosity flowability
Widely compatible printers
4.7Editor score
ELEGOO Tough 3D Printer Resin
Shore 84.7D hardness
1000g black bottle
Strong impact resistance
Wide application range
4.5Editor score
Siraya Tech Rebound 55A
55A shore hardness
1kg black bottle
Fast rebound action
Standard cleaning methods
4.2Editor score
ANYCUBIC Tough Resin 2.0
High precision clear resin
1kg clear bottle
Low shrinkage rate
Industry-wide compatibility
4.6Editor score
3D Printer Resin Flexible Tough
Shore 90A hardness
1000g black bottle
High precision impact durable
Built for makers
4.4Editor score
1. ANYCUBIC Ultra Tough Resin – Best Overall Flexible Resin
ANYCUBIC Ultra Tough Resin
Shore hardness varies
1kg black volume
Fast 405nm curing
Low odor formula
The ANYCUBIC Ultra Tough Resin stands out as a top choice for users needing both flexibility and durability. With a rating of 4.7, it is praised for its ability to recover shape after deformation. This makes it ideal for parts that undergo stress or impact.
Pros
- Exceptional impact resistance
- High flexibility and resilience
- Non-irritating skin contact
- Works as resin additive
- Durable in humidity
Cons
- Price higher than standard
- Color may shift when mixed
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Its exceptional toughness ensures resistance to brittleness and corrosion even in damp environments. The resin offers a gentle skin sensation, making it suitable for wearable models like earphone covers. It also enhances other resins when used as an additive, boosting their durability significantly.
While it performs well, users should note that mixing it with other colors might affect the final shade. Additionally, the price point is higher than standard resins, reflecting its specialized formulation. However, the reduced failure rate often justifies the extra cost for functional prints.
This resin is perfect for makers creating articulated models, daily wearables, or structural parts requiring shock absorption. Its balance of flexibility and strength makes it a versatile option for both hobbyists and professionals looking to reduce print failures.
Enhanced Wearability and Touch
The non-irritating surface allows for safe direct skin contact, perfect for cosplay accessories or ergonomic grips.
Additive Versatility
When blended with other resins, it significantly enhances their toughness, offering a customizable solution for complex projects.
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2. Siraya Tech Tenacious Flexible – Best Budget Flexible Resin
Siraya Tech Tenacious Flexible
Shore hardness soft
500g flex black
Rubber-like flexibility
Fast rebound action
Siraya Tech Tenacious Flex Black offers a significantly softer, more rubber-like feel compared to its classic counterpart. Rated at 4.7, it provides faster rebound and incredible elasticity for resilient prints. This makes it excellent for applications requiring high flexibility and shock absorption.
Pros
- Softer rubber-like feel
- Enhanced rebound elasticity
- High impact resistance
- Excellent resin additive
- Durable yet flexible
Cons
- May not suit all original uses
- Black color limits options
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The resin withstands extreme bending and compression, quickly returning to its original shape without cracking. It is ideal for soft grips, gaskets, and pliable prototypes that need to maintain integrity under stress. As an additive, it boosts impact resistance in other resins effectively.
However, users should note it may not suit all applications where the original Tenacious resin is used due to its softer formulation. The limited 500g size in black might not suit large projects or those needing transparency. These are minor trade-offs for the performance it delivers.
Buyers seeking a cost-effective option for flexible prototypes should consider this resin. Its balance of price and performance makes it a strong contender for makers who need durable, bendable parts without investing in premium materials.
Superior Elasticity
The new formulation allows for more dynamic and flexible prints that recover quickly after deformation.
Impact Resistance Design
Designed to keep models resilient, it ensures accidental drops do not cause deformations or cracks in printed objects.
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3. Siraya Tech Rebound 55A – Best Premium Flexible Resin
Siraya Tech Rebound 55A
Shore 55A hardness
1kg black volume
Fast rebound action
No special cleaning
Siraya Tech Rebound 55A is designed for applications requiring quick shape recovery and impact absorption. With a 55A Shore hardness, it offers a softer feel than Tenacious Flex while maintaining compression properties. This makes it ideal for shock-absorbing components and seals.
Pros
- Fast rebound action
- Balanced flexibility and strength
- No special cleaning required
- Versatile prototyping uses
- Standard printer compatibility
Cons
- Higher price point
- Long-term testing ongoing
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Unlike other elastomers, it prints on standard LCD and DLP printers without needing A/B mixing. It cleans easily with standard isopropyl alcohol methods, simplifying the workflow. Initial testing shows good resilience during compression cycles for reliable prototyping.
The main drawback is the higher price compared to standard resins, reflecting its specialized elasticity. Long-term performance testing is ongoing, so users should monitor results over time. Despite this, it remains a strong choice for demanding industrial prototypes.
This resin is best suited for personal protective equipment prototypes, consumer products, and industrial gaskets. If your project demands high elasticity and rebound performance, the investment in this premium material is worthwhile for professional results.
Easy Processing
No special cleaning is required, allowing it to work with standard printers and cleaning methods like isopropyl alcohol.
Industrial Suitability
Well-suited for industrial prototyping like gaskets and seals where elasticity and rebound performance are critical factors.
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4. Superflex 3D Printer Resin – High Speed Flexible Resin
Superflex 3D Printer Resin
Shore 80A hardness
500g clear volume
Fast 1.7s layers
ISO certified safety
Superflex 3D Printer Resin is designed for fast printing on monochrome LCD printers. It allows printing 50um layers in 1.7 seconds, saving time and electricity. With an 80A Shore hardness, it balances softness and strength for rubber-like prototypes.
Pros
- Fast printing speed
- Clear transparent color
- Shore 80A hardness
- ISO 10993-5 tested
- Enhances productivity
Cons
- 500g bottle size
- May require specific curing
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This resin is ISO 10993-5 tested, ensuring safety for applications requiring hygiene. It offers 100% elongation at break, making it suitable for cushioning and shock absorption. Its clear color allows for detailed visual inspection of printed parts.
The 500g bottle size might be limiting for large production runs compared to 1kg options. Proper post-curing is essential to pass safety tests, adding a step to the workflow. However, the speed advantages often outweigh this minor inconvenience for farms.
Users needing quick turnaround on functional prototypes or clear parts will appreciate this resin. Its balance of speed, safety, and flexibility makes it a reliable choice for professional 3D printing farms and hobbyists alike.
Speed Advantage
Printing 50um layers in 1.7 seconds enhances productivity by at least 40% for high-volume printing farms.
Safety Certification
Properly cleaned and fully post-cured prints pass the ISO 10993-5 test, ensuring safe and reliable results.
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5. SUNLU Flexible 3D Printer Resin – Low Odor Flexible Resin
SUNLU Flexible 3D Printer Resin
Shore 70A hardness
1000g gray bottle
Low odor formula
Leak-proof design
SUNLU Flexible 3D Printer Resin provides a balanced softness and strength for durable prototypes. It has a 70A Shore hardness and minimal odor, making printing more comfortable. The leak-proof bottle design protects against damage during transportation.
Pros
- Minimal odor during print
- Leak-proof bottle design
- High compatibility range
- Smooth surface finish
- Good stability
Cons
- Lower rating from users
- Gray color limits options
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This resin offers high compatibility with 99% of printers on the market, including LCD and SLA. It produces a smooth, non-sticky surface finish after cleaning. With low shrinkage, it ensures accurate size and shape of printed parts.
However, user ratings are lower than competitors, suggesting inconsistent print success or specific calibration needs. The gray color might not be preferred for visual projects. These factors should be weighed against the cost and convenience it offers.
For makers seeking a versatile resin with a comfortable print environment, this option is worth considering. The stable formula and leak-proof packaging add value for users prioritizing safety and ease of use.
Odor Reduction
The minimal odor formula is non-pungent and does not cause irritating odors during the printing process.
Printer Compatibility
Printing wavelength is 365-405nm, ensuring compatibility with 99% of printers on the market including LCD and DLP.
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6. ANYCUBIC Tough Resin 2.0 – Upgraded Toughness Resin
ANYCUBIC Tough Resin 2.0
Upgraded flexural strength
1kg grey volume
Low-odor friendly
High precision details
ANYCUBIC Tough Resin 2.0 features an upgrade in flexural strength and precision. It offers high elongation and resists cracking under stress. The low-odor formulation creates a comfortable printing environment by reducing volatile organic compounds.
Pros
- Enhanced toughness
- Strong elongation
- Low-odor formulation
- High precision prints
- Industry application ready
Cons
- Grey color limited
- Standard speed only
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This resin boasts minimal shrinkage for smooth surfaces and clear details. It is optimized for wavelengths between 365nm and 405nm, compatible with most LCD printers. It is suitable for industrial spare parts and high-strength model production.
While effective, the grey color may restrict visual appeal for transparent projects. It operates at standard speeds, which might not suit urgent production needs. However, the durability and precision make it reliable for structural components.
Users needing strong, detailed models for engineering or industrial use should consider this resin. The balance of toughness and precision ensures parts maintain integrity even when dropped or subjected to vibrations.
Precision Detailing
Minimal shrinkage rate ensures printed models feature a smooth surface and clear details for high-precision needs.
Environmental Friendly
The green formulation significantly reduces volatile organic compounds, creating a calm and comfortable printing environment.
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7. SUNLU High Toughness Resin – Enhanced Flexible Resin
SUNLU High Toughness Resin
Enhanced flexibility
1KG grey volume
Low viscosity flow
Wide printer compatibility
SUNLU High Toughness 3D Resin offers enhanced flexibility with 5 times higher elongation than standard resins. It features low viscosity and high flowability for shorter curing time. The leak-proof design ensures safe transport and easy printing setup.
Pros
- 5x elongation improvement
- Low shrinkage rate
- Low odor formula
- Widely compatible
- Easy model formation
Cons
- Grey color limit
- Standard price point
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Low shrinkage reduces distortion potential, allowing for best-in-class accuracy. It is compatible with most LCD/DLP/SLA printers on the market. The low odor provides a comfortable printing environment for extended sessions.
The grey color might limit choices for projects requiring transparency or bright colors. While versatile, it does not offer specialized features like skin safety found in other options. However, its balance of performance and price makes it a solid general-purpose choice.
Makers needing reliable structural parts or solid models will appreciate this resin. The high toughness and bendability ensure printed models are unbreakable and durable for practical applications.
Improved Elongation
The resin has 5 times higher elongation than regular standard resin, making models unbreakable and durable.
Low Shrinkage Tech
R&D team focuses on reducing volume shrinkage, greatly improving the 3D printing success rate.
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8. ELEGOO Tough 3D Printer Resin – High Hardness Flexible Resin
ELEGOO Tough 3D Printer Resin
Shore 84.7D hardness
1000g black bottle
Strong impact resistance
Fine texture finish
ELEGOO Tough 3D Printer Resin boasts a Shore hardness of 84.7D, offering exceptional damage resistance. It withstands certain tension and stress, recovering quickly after deformation. This makes it ideal for structural parts and functional prototypes.
Pros
- High shore hardness
- Quick shape recovery
- Strong impact resistance
- Good weather resistance
- Wide application
Cons
- Harder flexibility feel
- Standard pricing only
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The resin has fine texture and excellent resistance to brittleness and corrosion even in humidity. It is suitable for printing tools and high-performance models that can be drilled without cracks. The low odor ensures a comfortable working environment.
While durable, the high hardness might limit applications needing extreme flexibility. It offers standard pricing compared to premium specialized resins. However, the performance for structural integrity justifies this trade-off for engineering parts.
Users prioritizing strength and weather resistance for end-use products should consider this resin. Its versatility for tools and fixtures makes it a robust choice for makers needing reliable, tough prints.
High Hardness
The cured resin has a Shore hardness of 84.7D, exceeding that of others for strong damage resistance.
Weather Resistance
It has high elasticity and flexibility, ensuring excellent performance under extreme temperature conditions.
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9. ANYCUBIC Tough Resin 2.0 – Clear Transparent Tough Resin
ANYCUBIC Tough Resin 2.0
Shore hard clear resin
1kg clear volume
Unmatched flexural strength
Minimal odor friendly
ANYCUBIC Tough Resin 2.0 is available in clear, offering high precision and unmatched strength. It significantly reduces the likelihood of breakage for delicate components. The low-odor design makes for a serene and pleasant printing experience.
Pros
- High precision clear resin
- Exceptional strength
- Minimal odor formula
- Industry-wide compatible
- Exceptional accuracy
Cons
- Clear color handling
- Price vs standard
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This resin ensures high-precision prints with minimal shrinkage. It is highly compatible with different equipment and materials, suitable for industrial applications. The clear color is ideal for inspecting internal structures or aesthetic parts.
Handling clear resin requires care to avoid scratches or clouding during curing. It may cost more than standard grey variants. Despite these considerations, the accuracy and strength are valuable for detailed industrial parts.
Makers needing transparent or high-precision models will find this resin suitable. The combination of toughness and clarity makes it a versatile option for engineering and design prototypes.
Precision Accuracy
Ensures high-precision prints with minimal shrinkage for exceptional accuracy in detailed components.
Industry Compatibility
Offers versatile industrial applications and is highly compatible with different equipment and materials.
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10. 3D Printer Resin Flexible Tough – Rubber-Like Tough Resin
3D Printer Resin Flexible Tough
Shore 90A hardness
1000g black volume
Rubber/TPU like
High precision impact
This resin simulates rubber with a Shore 90A hardness, offering both softness and strength. It delivers high elongation and excellent tear resistance for gaskets and protective cases. The formula keeps its cool under stress, bending where ordinary resins snap.
Pros
- Flexible like rubber
- High tear resistance
- High precision details
- Built for makers
- No brittle failures
Cons
- Specific printing care
- Higher cost range
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It provides high precision with a low-odor formula for comfortable workshop use. Perfect for technical applications and detailed models, it handles shock-absorbing components and wearables well. The black color is suitable for most engineering parts.
While effective, specific post-curing requirements may be necessary for optimal properties. The price range is higher than standard resins. However, the reliability and toughness make it a valuable investment for durable prototypes.
Users needing parts that stay flexible under repeated stress will appreciate this resin. Whether prototyping or producing end-use parts, it is ready to flex reliably for makers and engineers.
Rubber Simulation
Simulates the toughness of rubber with both softness and strength, suitable for cushioning and shock absorption.
Tear Resistance
Delivers high elongation and excellent tear resistance, making it the go-to choice for gaskets and cases.
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Buying Guide – How to Choose the Best Flexible Resin for 3D Printing
Selecting the right flexible resin depends on your specific project needs and printer compatibility. This guide covers key factors to consider for successful printing.
Shore Hardness and Flexibility
Shore hardness measures resistance to indentation. Lower values like 55A offer more stretch and softness while higher values like 90A provide more stiffness. Choose based on the flexibility needed for your part.
For soft rubber parts aim for 55A to 70A. For tougher parts use 80A to 90A.
Impact Resistance and Durability
Look for resins with high elongation at break to ensure they can withstand drops without cracking. This factor is crucial for functional prototypes that undergo physical stress.
Check product descriptions for tear resistance claims.
Printer Compatibility
Ensure the resin is compatible with your printer type such as LCD, DLP, or SLA. Most flexible resins work at 405nm but verify this to avoid print failures.
Confirm wavelength range matches your device.
Print Speed and Viscosity
Lower viscosity resins flow better and cure faster, improving print speed and success rates. Some options like Superflex offer fast layer printing to save time.
Choose based on your production needs.
Post-Curing Requirements
Flexible resins often require specific curing times to achieve optimal elasticity. Improper curing can lead to tacky or brittle parts.
Follow manufacturer guidelines for UV curing duration.
Safety and Odor
Resins with low odor and ISO certifications are safer for indoor printing. Look for non-irritating properties if printing wearable items.
Prioritize low-odor formulations for comfort.
Color Options
Some resins are available in multiple colors or transparency. Darker resins can absorb UV more efficiently which may impact print settings.
Select color based on aesthetic requirements.
Cost and Bottle Size
Prices vary based on quality and size. Larger 1kg bottles offer better value for production while 500g suits small projects.
Consider your project volume when buying.
How to Use and Care for Your Flexible Resin for 3D Printing
Store flexible resin in a cool dry place away from direct sunlight. Ensure the bottle is tightly sealed to prevent contamination and evaporation before use.
Mix the resin gently before printing to ensure uniform consistency. Do not shake vigorously to avoid introducing air bubbles into your print.
After printing clean parts with isopropyl alcohol and cure them under UV light. Proper curing is essential to achieve full flexibility and strength.
Frequently Asked Questions
Is flexible resin for 3D printing safe to touch?
Flexible resin is generally safe after proper post-curing. Products like ANYCUBIC Ultra Tough and Superflex offer skin-safe properties when fully cured. Always wear gloves during printing.
How is flexible resin better than standard resin?
Flexible resin offers higher elongation and impact resistance. It is ideal for parts that bend or absorb shock. Standard resin is more brittle.
Do I need a special printer for flexible resin?
Most standard LCD, DLP, and SLA printers work with flexible resin. Ensure compatibility with 405nm wavelengths. No extra hardware is usually required.
What is the best cure time for flexible resin?
Curing times vary by resin and thickness. Follow manufacturer guidelines typically ranging from 5 to 20 minutes. Proper curing ensures optimal properties.
Can I mix flexible resin with standard resin?
Yes, products like ANYCUBIC Ultra Tough can be used as additives. Mixing can enhance toughness but may affect final colors. Test small batches first.
How do I store flexible resin after use?
Store in a sealed bottle away from light. Keep at stable room temperature. Ensure no dust or water enters the container.
Why is my flexible print too soft?
Insufficient curing or wrong exposure settings may cause softness. Increase UV exposure time or check layer thickness. Follow recommended settings.
Are flexible resins toxic?
Uncured resin is toxic. Always use gloves and a mask during handling. Cured parts are generally safe but wash them thoroughly before use.
Final Thoughts on Choosing the Best Flexible Resin for 3D Printing
Flexible resins open up possibilities for functional and durable 3D prints. Top picks like ANYCUBIC Ultra Tough and Siraya Tech Tenacious offer reliable performance for various applications.
Prioritize factors like shore hardness and compatibility for your needs. Proper curing and handling ensure the best results for your prototypes.
Check current prices and availability before buying to secure the best value. These products provide a solid foundation for your flexible printing projects.