Material

Materials used at Harkesh Rubber

10 Column Table

Properties	NBR	EPDM	CR	VMQ	FKM	HNBR	FVMQ	FFKM	Aflas
Common Name	Buna-N, Nitrile	Ethylene Propylene	Chloroprene	Silicone	Fluorinated Hydrocarbon	Hydrogenated Nitrile	Fluorosilicone	Per- Fluoroelastomer	tetrafluoroethylene /propylene
Chemical definition	Butadiene Acrylonitrile	Ethylene Propylene Diene Co & Terpolymer	Poly- Chloroprene	Polydim- ethylsiloxane	Vinylidiene Fluoride Hexa- fluoropropylene	Hydrogenated Butadiene Acrylonitrile	Fluororinyl Methly Siloxane	Per- Fluoroelastomer	tetrafluoroethylene /propylene
ASTM D-2000 & SAE J 200	BF BG BK CH	CA BA AA DH	BC BE	FC FE CE	HK	DH	FK	-	-
Low Temperature (°C)	-40	-50	-34	-60	-30	-35	-70	-5	-5
High Temperature (°C)	125	150	120	250	220	165	200	300	220
Hot Aging at 100°C	Good	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent
Aging in Oxygen & Weather	Poor	Very Good	Good	Excellent	Excellent	Good	Excellent	Very Good	Very Good
FDA Approved Grades Available	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes