Santoprene 271-64 TPV | FDA & NSF 51 Food Contact 69A TPV

描述

Santoprene 271-64 is a natural, colorable thermoplastic vulcanizate from Celanese developed for selected non-fatty food-contact and food-equipment applications.

The grade combines elastomeric flexibility with thermoplastic processability, making it suitable for molded and extruded components such as seals, gaskets, closures, tubing and appliance parts.

Celanese’s current Product Finder lists a typical hardness of approximately 69 Shore A, making Santoprene 271-64 firmer than very soft sealing TPVs while still retaining high flexibility.

Current typical mechanical values include:

• 490% elongation at break
• 6.6 MPa tensile stress at break
• 2.6 MPa tensile stress at 100% elongation
• 18% compression set under the Product Finder reference condition

This property balance makes Santoprene 271-64 useful where a food-contact elastomer needs more support than a softer TPV while still retaining substantial deformation capability.

One of the most important reasons to select Santoprene 271-64 is its regulatory positioning.

Celanese states that the material can, in principle, be used in U.S. food-contact applications under applicable FDA requirements, although migration or use limitations may apply. The grade is specifically designed for non-fatty food-contact applications.

Santoprene 271-64 is also certified to NSF/ANSI Standard 51: Food Equipment Materials. NSF’s current official listing shows the grade for food-zone use with alcoholic foods, aqueous acidic and non-acidic foods, dairy/oil-in-water emulsions and dry solids, with a listed maximum use temperature of 212°F / 100°C. The listing also notes that this material is acceptable for repeated use.

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 271-64

The strongest reason to select Santoprene 271-64 is its combination of 69A hardness, high elongation, FDA food-contact positioning and NSF 51 certification.

Typical Applications for Santoprene 271-64

Santoprene 271-64 is particularly relevant to food-equipment and consumer applications requiring a firmer flexible TPV.

Historical manufacturer-derived data specifically lists filters, flexible grips, food containers, gaskets, kitchenware, living hinges, seals, tubing, white goods and small appliances as typical uses.

Typical Properties of Santoprene 271-64

Physical Properties

The current Product Finder identifies Santoprene 271-64 as Natural with a hardness of 69 Shore A.

Mechanical Properties

These values show that Santoprene 271-64 provides a relatively firm sealing response while maintaining very high extensibility.

FDA Food-Contact Positioning

A major selling point of Santoprene 271-64 is its use in selected food-contact applications.

Celanese describes the grade as designed for non-fatty food contact applications and states that it can, in principle, be used in food-contact applications in the United States under applicable FDA requirements. Migration or use limitations may apply.

Older manufacturer-derived data also describes the grade as complying with FDA requirements relevant to rubber articles intended for repeated use and closures or sealing gaskets in contact with non-fatty, non-oily foods.

This makes Santoprene 271-64 relevant to:

• Food-equipment seals
• Gaskets
• Closures
• Kitchenware
• Food containers
• Flexible grips
• Appliance components
• Selected tubing applications

For your product page, the safest wording is:

“Suitable for selected non-fatty food-contact applications under applicable FDA requirements.”

rather than simply calling it a universal “food-grade TPV”.

NSF/ANSI 51 Food Equipment Certification

Santoprene 271-64 is currently listed by NSF under NSF/ANSI 51 – Food Equipment Materials.

The current NSF listing includes the following food types:

• 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 listed maximum use temperature is 212°F / 100°C, and the NSF listing notes that Santoprene 271-64 is acceptable for repeated use.

This makes the grade particularly relevant to:

• Commercial food equipment
• Beverage equipment
• Food-processing machinery
• Kitchen appliances
• Food-contact sealing systems
• Reusable sealing components

Flex-Fatigue Resistance

Celanese specifically recommends Santoprene 271-64 for applications requiring excellent flex-fatigue resistance.

This is useful for parts that repeatedly:

• Bend
• Compress
• Flex
• Recover
• Open and close
• Move during appliance operation

Typical applications include flexible grips, seals, tubing, closures and repeated-motion food-equipment components.

Why Choose Santoprene 271-64?

The main reason to choose Santoprene 271-64 is its balance of food-contact compliance and elastomeric performance.

At approximately 69 Shore A, the material provides more support than softer food-contact TPV grades while remaining flexible enough for seals, gaskets, closures and tubing.

Its approximately 490% elongation at break allows large deformation.

The typical 6.6 MPa tensile stress at break provides useful mechanical strength.

The approximately 2.6 MPa stress at 100% elongation gives the grade a firm but still elastomeric response.

Most importantly, it combines FDA non-fatty food-contact positioning with NSF/ANSI 51 certification, giving customers clearer regulatory support for food-equipment applications.

For customers requiring a 69A natural/colorable TPV for food-equipment seals, gaskets, closures, tubing or flexible appliance components, Santoprene 271-64 is a strong grade to evaluate.

Processing Guidelines for Santoprene 271-64

Celanese states that Santoprene 271-64 can be processed on conventional thermoplastic equipment by:

• Injection molding
• Extrusion
• Blow molding

General Processing Guidance

Historical manufacturer-grade processing data recommends desiccant drying for 3 hours at 80°C and gives a broad Santoprene processing window of approximately 175–230°C.

Shear-Dependent Flow

Santoprene 271-64 is a shear-dependent TPV.

As shear rate increases, apparent viscosity decreases.

Important processing variables include:

• Injection speed
• Screw speed
• Gate dimensions
• Melt temperature
• Mold temperature
• Back pressure
• Die geometry
• Melt pressure
• Cooling conditions
• Draw-down

Injection Molding

For injection molding, processors should optimize:

• Barrel temperature profile
• Melt temperature
• Injection speed
• Holding pressure
• Screw speed
• Back pressure
• Gate design
• Runner dimensions
• Venting
• Cooling time

Extrusion

For extrusion, processors should optimize:

• Barrel-zone temperatures
• Adapter temperature
• Die temperature
• Screw speed
• Melt pressure
• Draw-down
• Cooling
• Profile or tubing dimensions
• Surface finish

Material Compatibility

Celanese processing guidance states that Santoprene TPV is incompatible with acetal (POM) and PVC.

Equipment should be thoroughly purged when switching between these materials and Santoprene 271-64.

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 food-contact requirement, Shore hardness, service temperature, processing method and application.

Technical Documents for Santoprene 271-64

Need technical documents for Santoprene 271-64?

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Please state Santoprene 271-64 and whether you require TDS, SDS, FDA, NSF or other technical documentation.

FAQ About Santoprene 271-64

Q1: What is Santoprene 271-64?

Santoprene 271-64 is a natural, colorable specialty TPV from Celanese designed for selected non-fatty food-contact applications and food-equipment components.

Q2: What is the hardness of Santoprene 271-64?

The current Celanese Product Finder value is approximately 69 Shore A.

Q3: Is Santoprene 271-64 FDA food-contact suitable?

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 271-64 NSF 51 certified?

Yes. NSF’s current official listing includes Santoprene 271-64 TPV under NSF/ANSI 51 Food Equipment Materials.

Q5: What is the elongation at break?

The current typical value is approximately 490%.

Q6: What is the tensile stress at break?

The current typical value is approximately 6.6 MPa.

Q7: What is the tensile stress at 100% elongation?

The typical value is approximately 2.6 MPa.

Q8: What is the compression set?

Celanese Product Finder lists approximately 18% under its published reference condition.

Q9: Is Santoprene 271-64 suitable for repeated-use food equipment?

Yes. NSF’s current official listing states that the material is acceptable for repeated use under the listed NSF/ANSI 51 conditions.

Q10: What food types are covered by the NSF listing?

The current NSF listing includes alcoholic foods, aqueous acidic and non-acidic foods, dairy/oil-in-water emulsions and dry solids.

Q11: What is the NSF maximum use temperature?

The current NSF listing gives a maximum use temperature of 212°F / 100°C.

Q12: Is Santoprene 271-64 suitable for flexible parts?

Yes. Celanese specifically recommends it for applications requiring excellent flex-fatigue resistance.

Q13: Can Santoprene 271-64 be injection molded?

Yes. Injection molding is one of the published processing methods.

Q14: Can Santoprene 271-64 be extruded?

Yes. Extrusion is a supported process and is suitable for applications such as tubing and flexible profiles.

Q15: Can Santoprene 271-64 be blow molded?

Yes. Blow molding is also included among the published processing methods.

Q16: Does Santoprene 271-64 require drying?

Historical manufacturer processing guidance recommends approximately 80°C for 3 hours before processing.

Request Santoprene 271-64 Price & Technical Support

For pricing, availability, technical documents or application support for Santoprene 271-64, 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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