ExxonMobil Santoprene® 241-73W236 Thermoplastic Elastomer

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ExxonMobil Santoprene® 241-73W236 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 NSF 61 for plumbing applications in contact with potable water and contains a stabilization system for protection against copper and other metal-catalyzed degradation. This grade of Santoprene TPV is shear-dependent and can be processed on conventional thermoplastics equipment for injection molding, extrusion or blow molding. It is polyolefin based and completely recyclable. Key Features: Complies with NSF Standard 61: Piping System Components for Drinking Water. Compliant to EU Directive 2003/11/EC regarding marketing and use of certain dangerous substances and preparations, specifically pentabromodiphenyl ether or octabromodiphenyl ether. EU and China RoHS compliant. Applications: Plumbing – Potable Water Seals and Gaskets Tubing Uses: Plumbing Parts Availability: Africa & Middle East, Europe, North America, Asia Pacific, Latin America and South America Information provided by ExxonMobil Chemcial
Key Words:	EU 2003/11/EC; NSF 51; NSF 61; RoHS Compliant; UL QMFZ2; UL QMFZ8
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Physical Properties	Original Value	Comments

Specific Gravity	0.970 g/cc	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore A	79	2 mm, 15 sec; ISO 868
Tensile Strength at Break	1280 psi	Across Flow; ASTM D412
Tensile Stress at Strain	522 psi @Strain 100 %	Across Flow; ASTM D412
Elongation at Break	490 %	Across Flow; ASTM D412
Compression Set	25 % @Temperature 22.8 °C, Time 79200 sec	ASTM D395
	57 % @Temperature 100 °C, Time 605000 sec	ASTM D395

Processing Properties	Original Value	Comments
Processing Temperature	175 - 230 °C
Rear Barrel Temperature	350 °F
Middle Barrel Temperature	360 °F
Front Barrel Temperature	370 °F
Nozzle Temperature	380 - 440 °F
Die Temperature	400 °F	Extrusion
Melt Temperature	395 °F	Extrusion
	390 - 450 °F	Processing
Mold Temperature	50.0 - 125 °F	Processing
Drying Temperature	180 °F
Dry Time	3 hour
Moisture Content	0.080 %
Back Pressure	50.0 - 100 psi	Processing
	725 - 2900 psi	Extrusion
Clamp Pressure	6000 - 10000 psi
Vent Depth	0.00100 in
Cushion	0.125 - 0.250 in
Screw Speed	100 - 200 rpm

Descriptive Properties
Color	Natural Color
Form	Pellets
Injection Rate	Fast
Maximum Regrind %	20
Screw Compression Ratio	2:1 - 2.5:1
Screw L/D Ratio	16:1 - 20:1

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