Freudenberg Sealing Technologies 65 FKM 178975 Fluoroelastomer

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Freudenberg Sealing Technologies 65 FKM 178975 Fluoroelastomer
Categories:	Polymer; Thermoset; Fluoropolymer, TS; Thermoset Fluoroelastomer; Rubber or Thermoset Elastomer (TSE)
Material Notes:	FKM seals display very good resistance to media, ozone and aging. The material is also stable in fuels as well as petroleum-based oils and greases, along with aliphatic and aromatic hydrocarbons. It is unstable with regard to polar solvents (e.g. acetone, MEK and ethyl acetate), low molecular weight organic acids (formic and acetic acid), glycol-based brake fluid, ammonia gas, amines, alkalis and superheated steam. Information provided by Freudenberg Sealing Technologies.
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Physical Properties	Metric	English	Comments

Density	1.84 g/cc	0.0665 lb/in³	DIN EN ISO 1183-1

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	62	62	DIN ISO 7619-1
Tensile Strength	10.6 MPa	1540 psi	DIN 53504, S2
Elongation at Break	300 %	300 %	DIN 53504, S2
100% Modulus	3.10 MPa	450 psi	DIN 53504
Rebound	8.0 %	8.0 %	DIN 53512
Compression Set	32 % @Temperature 150 °C, Time 86400 sec	32 % @Temperature 302 °F, Time 24.0 hour	DIN ISO 815, B

Thermal Properties	Metric	English	Comments
Maximum Service Temperature, Air	200 °C	392 °F
Minimum Service Temperature, Air	-20.0 °C	-4.00 °F

Descriptive Properties
Cross-linking	bisphenolically

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PFREU9054 / 293590

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