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ExxonMobil Santoprene® 271-55 Thermoplastic Elastomer
Categories: Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Vulcanizate Elastomer (TPV)

Material Notes: A soft, colorable, specialty thermoplastic vulcanizate (TPV) in the thermoplastic elastomer (TPE) family. It complies with FDA regulations for rubber articles intended for repeated use, as well as those in contact with non-fatty, non-oily foods as closures and sealing gaskets. This grade of Santoprene TPV is shear-dependent and can be processed on conventional thermoplastics equipment for injection molding or extrusion. It is polyolefin based and completely recyclable.

Key Features:

  • This product, in principle, can be used in food contact applications in the USA (FDA). Migration or use limitations may apply.
  • Complies with NSF Standard 51: Food Equipment Materials - Plastics, materials and components used in food equipment.
  • UL listed: file #QMFZ2.E80017, Plastics - Component; file #QMFZ8.E80017, Plastics Certified For Canada - Component.
  • Recommended for applications requiring excellent flex fatigue resistance.
  • EU and China RoHS compliant.
Applications:
  • Consumer – FDA Seals and Closures, Packaging, Small Appliance and Soft Touch Grips
  • Seals and Gaskets
Uses:
  • Filters
  • Flexible Grips
  • Food Containers
  • Gaskets
  • Kitchenware
  • Living Hinges
  • Non-specific Food Applications
  • Seals
  • Tubing
  • White Goods & Small Appliances
Availability: Africa & Middle East, Europe, North America, Asia Pacific, Latin America and South America

Information provided by ExxonMobil Chemical

Key Words: EU 2003/11/EC; NSF 51; NSF 61; RoHS Compliant; UL QMFZ2; UL QMFZ8
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 0.970 g/ccASTM D792
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 592 mm, 15 sec; ISO 868
 62Air at 302°F, 168 hr; ASTM D573
Tensile Strength at Break 701.2 psiAir at 302°F, 168 hr; ASTM D573
 754 psiAcross Flow; ASTM D412
Tensile Stress at Strain 305 psi
@Strain 100 %
Across Flow; ASTM D412
Elongation at Break 390 %Across Flow; ASTM D412
 440.7 %Air at 302°F, 168 hr; ASTM D573
Tear Strength 91.4 pli73°F, Die C; ASTM D624
Compression Set 22 %
@Temperature 70.0 °C,
Time 79200 sec
ASTM D395
 38 %
@Temperature 125 °C,
Time 252000 sec
ASTM D395
 
Thermal PropertiesOriginal ValueComments
Brittleness Temperature -76.0 °FASTM D746
 
Processing PropertiesOriginal ValueComments
Processing Temperature 175 - 230 °C
Rear Barrel Temperature 350 °F
Middle Barrel Temperature 360 °F
Front Barrel Temperature 360 °F
Nozzle Temperature 370 - 430 °F
Die Temperature 390 °FExtrusion
Melt Temperature 385 °FExtrusion
 380 - 450 °F
Mold Temperature 50.0 - 125 °FProcessing
Drying Temperature 180 °F
Dry Time 3 hour
Moisture Content 0.080 %
Back Pressure 50.0 - 100 psiProcessing
 725 - 2900 psiExtrusion
Clamp Pressure 6000 - 10000 psi
Vent Depth 0.00100 in
Cushion 0.125 - 0.250 in
Screw Speed 100 - 200 rpm
 
Compliance PropertiesOriginal ValueComments
FDA Yes
 
Descriptive Properties
ColorNatural Color
FormPellets
Injection RateFast
Maximum Regrind %20
Screw Compression Ratio2:1 - 2.5:1
Screw L/D Ratio16:1 - 20:1

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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