Precision Polymer Engineering E70Z Ethylene Propylene Rubber

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Precision Polymer Engineering E70Z Ethylene Propylene Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Peroxide cured, grey Ethylene Propylene Terpolymer, 65-75 °IRHD. Terpolymer of ethylene, propylene and diene monomers. Specially formulated for sealing applications involving high voltage electrical equipment. Applications: Compound designed specially for sealing SF6 gas in electrical distribution equipment, i.e. medium & high voltage switchgear at low temperatures. The specially selected fillers used in this compound impart excellent electrical non-conductive properties to the rubber.
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Mechanical Properties	Metric	English	Comments

Hardness, Shore A	70	70	°IRHD; ASTM D1415
	74	74	°IRHD, +4 change after 70 hours @ 150°C; ASTM D1415
Tensile Strength, Yield	5.00 MPa	725 psi	ASTM D412
Elongation at Break	241 %	241 %	ASTM D412
Compression Set	10.4 % @Temperature 100 °C, Time 259000 sec	10.4 % @Temperature 212 °F, Time 72.0 hour	ASTM D395

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	150 °C	302 °F
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F
	-48.0 °C	-54.4 °F	Non-brittle after 3 minutes
Flash Point	>= 200 °C	>= 392 °F

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PPRECI063 / 57787

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