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Rulon Bearings

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ExxonMobil Santoprene® 8271-55 Thermoplastic Elastomer
Categories: Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Vulcanizate Elastomer (TPV)

Material Notes: A soft, colorable, specialty, non-hygroscopic 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 8000 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.
  • Non-hygroscopic product; requires little to no drying before processing.
  • Neutral, easy coloring formulation.
  • EU and China RoHS compliant.
Applications:
  • Consumer – FDA Seals and Closures, Packaging, Small Appliance and Soft Touch Grips
  • Industrial – Seals and Gaskets
  • Tubing
Uses:
  • Flexible Grips
  • Food Containers
  • Kitchenware
  • Living Hinges
  • Non-specific Food Applications
  • Seals
  • Tubing
  • White Goods and Small Appliances
Processing Method: Blow Molding, Extrusion Blow Molding, Injection Blow Molding, Injection Molding and Multi Injection Molding

Availability: Africa & Middle East, Europe, North America, Asia Pacific, Latin America and South America

Information provided by Advanced Elastomer Systems

Key Words: EU 2003/11/EC; RoHS Compliant; FDA 21 CFR 177.1210; FDA 21 CFR 177.2600; NSF 51; 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 0.960 g/ccASTM D792
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 602 mm, 15 sec; ISO 868
Tensile Strength at Break 653 psiAcross Flow; ASTM D412
Tensile Stress at Strain 290 psi
@Strain 100 %
Across Flow; ASTM D412
Elongation at Break 430 %Across Flow; ASTM D412
Tear Strength 79.9 pli73°C, Die C; ASTM D624
Compression Set 20 %
@Temperature 70.0 °C,
Time 79200 sec
ASTM D395
 46 %
@Temperature 125 °C,
Time 252000 sec
ASTM D395
 
Thermal PropertiesOriginal ValueComments
Brittleness Temperature -81.0 °FASTM D746
UL RTI, Electrical 100 °CUL 746
UL RTI, Mechanical with Impact 85.0 °CUL 746
Flammability, UL94 HB
@Thickness 1.10 mm
 HB
@Thickness 3.00 mm
 
Processing PropertiesOriginal ValueComments
Processing Temperature 175 - 230 °C
Rear Barrel Temperature 177 - 191 °C
Middle Barrel Temperature 179 - 193 °C
Front Barrel Temperature 185 - 199 °C
Nozzle Temperature 185 - 210 °C
Melt Temperature 143 - 216 °CProcessing
Mold Temperature 50.0 - 125 °FProcessing
Moisture Content 0.080 %
Back Pressure 50.0 - 100 psi
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

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