描述
Santoprene 271-80 is a natural, colorable specialty thermoplastic vulcanizate developed for selected non-fatty food-contact and food-equipment applications.
The material combines rubber-like flexibility with conventional thermoplastic processing. It can be processed by injection molding, extrusion, blow molding, thermoforming and vacuum forming, allowing manufacturers to produce seals, gaskets, closures, tubing, flexible components and appliance parts using established thermoplastic equipment.
Celanese’s Product Finder lists Santoprene 271-80 at approximately 85 Shore A, making it a relatively firm food-contact TPV while still retaining high elongation. Current published values include approximately:
- 540% elongation at break
- 10.6 MPa tensile stress at break
- 4.6 MPa tensile stress at 100% elongation
- 41% compression set under the Product Finder reference condition
The latest Celanese Materials Database sheet also lists approximately:
- 0.950 g/cm³ density
- -60°C brittleness temperature
- 41% compression set at 70°C / 24 h
- 47% compression set at 125°C / 70 h
Santoprene 271-80 is designed for non-fatty food-contact applications. Celanese states that the product can, in principle, be used in food-contact applications in the USA under applicable FDA requirements, although migration or use limitations may apply.
The grade is also currently listed under NSF/ANSI 51 – Food Equipment Materials. NSF’s official listing shows Santoprene 271-80 for repeated-use food-zone applications involving several food categories, with a listed maximum use temperature of 212°F / 100°C.
For more TPV products, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the current Santoprene portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 271-80
| Feature | Engineering Benefit |
|---|---|
| 85 Shore A Hardness | Provides a firm elastomeric response for seals, closures and technical parts |
| FDA Food-Contact Positioning | Supports selected non-fatty U.S. food-contact applications |
| NSF/ANSI 51 Certified | Supports food-equipment material applications |
| 540% Elongation at Break | Provides high flexibility and deformation capability |
| 10.6 MPa Tensile Stress at Break | Provides strong mechanical performance |
| 4.6 MPa Stress at 100% Elongation | Provides greater resistance to deformation |
| 41% Compression Set @ 70°C / 24 h | Provides published recovery data for compressed parts |
| -60°C Brittleness Temperature | Supports low-temperature flexibility |
| Excellent Flex-Fatigue Resistance | Suitable for repeatedly flexed components |
| Natural / Colorable | Supports customized product colors |
| Injection Moldable | Suitable for complex molded components |
| Extrudable | Suitable for tubing, profiles and other continuous parts |
| Blow Moldable | Supports selected hollow components |
| Thermoformable / Vacuum Formable | Broadens manufacturing options |
| Polyolefin Based | Combines elastomeric behavior with thermoplastic processing |
The main strength of Santoprene 271-80 is its combination of 85A firmness, high elongation and food-equipment regulatory positioning.
Typical Applications for Santoprene 271-80
Santoprene 271-80 is particularly suitable for food-equipment and consumer-product applications requiring a firmer flexible TPV.
| Application Area | Typical Use |
|---|---|
| Food Equipment Seals | Flexible sealing components |
| Gaskets | Food-zone and appliance sealing |
| Closures | Flexible closures for compatible food-contact uses |
| Tubing | Selected non-fatty food-contact tubing |
| Food Containers | Flexible seals and interfaces |
| Kitchenware | Flexible components and grips |
| Small Appliances | Seals and flexible molded parts |
| White Goods | Appliance sealing and flexible components |
| Flexible Grips | Ergonomic soft-touch components |
| Filters | Flexible sealing and support components |
| Living-Hinge-Type Parts | Repeated-flex components |
| Packaging Components | Flexible sealing and closure applications |
Typical Properties of Santoprene 271-80
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 950 kg/m³ / 0.950 g/cm³ | ISO 1183 |
| Shore A Hardness, 15 s | 85 | ISO 48-4 / ISO 868 |
| Brittleness Temperature | -60°C | ASTM D746 / ISO 812 |
| Resin Identification | TPV | ISO 1043 |
| Part Marking Code | >TPV< | ISO 11469 |
| Product Form | Pellets / Granules | Manufacturer information |
| Appearance | Natural / Colorable | Manufacturer information |
The current 2025 Celanese Materials Database sheet lists 0.950 g/cm³ density, 85 Shore A hardness and -60°C brittleness temperature.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Stress at 100% Elongation | 4.6 MPa | ISO 37 |
| Tensile Stress at Break | 10.6 MPa | ISO 527-1/-2 or ISO 37 |
| Elongation at Break | 540% | ISO 527-1/-2 or ISO 37 |
| Compression Set, 70°C / 24 h | 41% | ISO 815 |
| Compression Set, 125°C / 70 h | 47% | ISO 815 |
| Shore A Hardness | 85 | ISO 48-4 / ISO 868 |
These properties make Santoprene 271-80 suitable for applications requiring a relatively firm elastomer that can still stretch substantially under load.
FDA Food-Contact Positioning
A major selling point of Santoprene 271-80 is its use in selected food-contact applications.
Celanese describes the grade as designed for non-fatty food contact and states that the product can, in principle, be used in food-contact applications in the USA under applicable FDA requirements. Migration or use limitations may apply.
Typical applications may include:
- Food-equipment seals
- Gaskets
- Closures
- Kitchenware
- Food containers
- Flexible grips
- Appliance components
- Selected tubing applications
For SEO and customer communication, a precise description is:
“Santoprene 271-80 is suitable for selected non-fatty food-contact applications under applicable U.S. FDA requirements.”
NSF/ANSI 51 Food Equipment Certification
Santoprene 271-80 is currently listed under NSF/ANSI 51 – Food Equipment Materials.
The current NSF listing covers food-zone contact with:
- Alcohol greater than 8%
- Alcohol less than or equal to 8%
- Aqueous acidic foods
- Aqueous non-acidic foods
- Dairy / oil-in-water emulsions
- Dry solids
The current listing gives a maximum use temperature of 212°F / 100°C and identifies the material as acceptable for repeated use.
This is useful for customers developing:
- Commercial food equipment
- Beverage equipment
- Food-processing machinery
- Kitchen appliances
- Reusable sealing systems
- Food-contact flexible components
Low-Temperature Flexibility
Santoprene 271-80 has a published brittleness temperature of approximately -60°C.
This supports applications exposed to:
- Refrigerated environments
- Cold storage
- Temperature cycling
- Low-temperature transportation
- Cold-start conditions
Flex-Fatigue Resistance
Celanese specifically recommends Santoprene 271-80 for applications requiring excellent flex-fatigue resistance.
This makes the grade useful for parts that repeatedly:
- Bend
- Flex
- Compress
- Recover
- Open and close
- Move during appliance or equipment operation
Typical examples include flexible grips, seals, tubing, closures and repeated-motion food-equipment components.
Why Choose Santoprene 271-80?
The main reason to choose Santoprene 271-80 is its balance of firmness, flexibility and food-equipment compliance.
At approximately 85 Shore A, the material provides a firm elastomeric structure suitable for parts that need better shape retention than very soft TPVs.
Its approximately 540% elongation at break provides high deformation capability.
The typical 10.6 MPa tensile stress at break provides strong mechanical performance.
The approximately 4.6 MPa stress at 100% elongation gives the material a firm response under load.
Its published -60°C brittleness temperature supports low-temperature flexibility, while the 70°C and 125°C compression-set data provide useful information for sealing applications.
Most importantly, Santoprene 271-80 combines FDA non-fatty food-contact positioning with current NSF/ANSI 51 certification.
For customers requiring an 85A natural/colorable TPV for food-equipment seals, gaskets, closures, tubing or appliance components, Santoprene 271-80 is an important grade to evaluate.
Processing Guidelines for Santoprene 271-80
Santoprene 271-80 is shear dependent and can be processed on conventional thermoplastic equipment.
Current Celanese material information lists:
- Injection molding
- Extrusion
- Blow molding
- Thermoforming
- Vacuum forming
Current Grade-Specific Injection Conditions
| Processing Parameter | Celanese Guidance |
|---|---|
| Drying Recommended | Yes |
| Drying Temperature | 80°C |
| Drying Time | ≥3 hours |
| Processing Moisture Content | ≤0.08% |
| Maximum Regrind Level | 20% |
| Optimum Melt Temperature | 215°C |
| Minimum Melt Temperature | 200°C |
| Maximum Melt Temperature | 230°C |
| Optimum Mold Temperature | 30°C |
| Minimum Mold Temperature | 10°C |
| Maximum Mold Temperature | 50°C |
The latest Celanese Materials Database revision gives these grade-specific injection conditions.
Historical Detailed Injection Reference
| Processing Parameter | Published Reference |
|---|---|
| Rear Barrel Temperature | 177°C |
| Middle Barrel Temperature | 182°C |
| Front Barrel Temperature | 188°C |
| Nozzle Temperature | 193–232°C |
| Injection Speed | Fast |
| Screw Speed | 100–200 rpm |
Older grade-specific processing sheets remain useful as machine-setting references.
Extrusion Conditions
| Processing Parameter | Published Reference |
|---|---|
| Drying Temperature | 82°C |
| Drying Time | 3 hours |
| Melt Temperature | 204°C |
| Die Temperature | 210°C |
These published extrusion values can be used as starting points when developing tubing, profile or other extrusion processes.
Shear-Dependent Flow
Santoprene 271-80 is a shear-dependent TPV.
As shear rate increases, apparent melt viscosity decreases.
Processors should optimize:
- Injection speed
- Screw speed
- Gate dimensions
- Melt temperature
- Mold temperature
- Die geometry
- Melt pressure
- Draw-down
- Cooling conditions
- Surface finish
Material Compatibility
When processing Santoprene TPV, good purge practice should be used when changing between chemically incompatible polymer systems.
Particular care is typically required when transitioning to or from materials such as POM or PVC.
Related Products
We supply Santoprene TPV grades for different food-contact, NSF, hardness and processing requirements.
Typical Santoprene product families include:
- Santoprene 271 Series
- Santoprene FDA food-contact grades
- Santoprene NSF 51 grades
- Santoprene food-equipment grades
- Santoprene sealing grades
- Santoprene tubing grades
- Santoprene appliance grades
- Santoprene specialty TPV grades
View More TPV Thermoplastic Vulcanizates →
If you need grade-selection support, send us your required food-contact condition, Shore hardness, service temperature, processing method and application.
Technical Documents for Santoprene 271-80
| Document Type | Description |
|---|---|
| TDS | Physical, mechanical and processing data |
| SDS | Safety Data Sheet |
| FDA Information | Food-contact regulatory information for applicable uses |
| NSF 51 Information | Food Equipment Materials certification |
| UL Information | QMFZ2.E80017 / QMFZ8.E80017 |
| Processing Guide | Injection molding and extrusion guidance |
| Santoprene Product Finder | Celanese TPV portfolio and positioning |
| COA | Batch-specific quality information where available |
Need technical documents for Santoprene 271-80?
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Please state Santoprene 271-80 and whether you require TDS, SDS, FDA, NSF or other technical documentation.
FAQ About Santoprene 271-80
Q1: What is Santoprene 271-80?
Santoprene 271-80 is a natural, colorable specialty TPV from Celanese designed for selected non-fatty food-contact and food-equipment applications.
Q2: What is the hardness of Santoprene 271-80?
The current Celanese Product Finder value is approximately 85 Shore A.
Q3: Is Santoprene 271-80 suitable for FDA food-contact applications?
Celanese states that the grade can, in principle, be used in applicable U.S. food-contact applications, with migration or use limitations potentially applying. It is specifically positioned for non-fatty food contact.
Q4: Is Santoprene 271-80 NSF 51 certified?
Yes. NSF’s current official listing includes Santoprene 271-80 TPV under NSF/ANSI 51 Food Equipment Materials.
Q5: What is the density?
The latest Celanese Materials Database sheet lists approximately 0.950 g/cm³.
Q6: What is the elongation at break?
The current typical value is approximately 540%.
Q7: What is the tensile stress at break?
The current typical value is approximately 10.6 MPa.
Q8: What is the tensile stress at 100% elongation?
The current typical value is approximately 4.6 MPa.
Q9: What is the compression set?
The current Celanese sheet lists approximately 41% at 70°C / 24 h and 47% at 125°C / 70 h.
Q10: What is the low-temperature performance?
The published brittleness temperature is approximately -60°C.
Q11: What food types are included in the NSF listing?
The current NSF listing includes alcoholic foods, aqueous acidic and non-acidic foods, dairy/oil-in-water emulsions and dry solids.
Q12: What is the NSF maximum use temperature?
The current NSF listing gives a maximum use temperature of 212°F / 100°C.
Q13: Is Santoprene 271-80 acceptable for repeated use?
Yes. NSF currently lists the grade as acceptable for repeated use under the listed conditions.
Q14: Can Santoprene 271-80 be injection molded?
Yes. Injection molding is a listed processing method.
Q15: Can Santoprene 271-80 be extruded?
Yes. Extrusion is supported, with a published reference melt temperature of approximately 204°C and die temperature of approximately 210°C.
Q16: What injection melt temperature is recommended?
The current Celanese Materials Database gives approximately 215°C optimum, with a grade-specific range of approximately 200–230°C.
Request Santoprene 271-80 Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 271-80, please provide:
- Required quantity
- Destination country or port
- Food-equipment, appliance, tubing or sealing application
- Required Shore hardness
- Required color
- Food-contact requirement
- NSF 51 requirement
- Maximum service temperature
- Food type or contact medium
- Injection-molding, extrusion or blow-molding process
- TDS / SDS requirement
- FDA / NSF documentation requirement
- Sample requirement, if applicable
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