Perfluoroelastomer (FFKM)

Description

Perfluoroelastomers show ultimate performance among all elastomers. They are resistant to nearly every chemical class with some grades offering heat resistance over 300°C, this makes FFKM the material of choice for high demanding sealing applications.

Application

Application advantages:
• Excellent heat resistance
• Resistant to almost every chemical class
• Excellent outgassing performance in vacuum environments.
• Wide temperature range -30° C to +300° C
Application limitations:
• Avoid low-molecular-weight, fully halogenated fluids and molten alkali metals.Strong oxidizing acids may causesome swelling
• Helium permeability is slightly higher than fluoroelastomer compounds
• Extreme high cost.
Usage:
• All areas where extreme critical application is required.

Physical properties	ASTM Method	FFKM-HS	FFKM-HS (I)	FFKM-CS	FFKM-PS	FKM-7512	FKM-LT	FKM-AED	FKM-90	HNBR 7513	HNBR 9012	HNBR-AED	HNBR-LT	FVMQ
Colour	BLACK	BLACK	BLACK	WHITE	WHITE	BLACK	BLACK	BLACK	BLACK	BLACK	BLACK	BLACK	BLACK	BLUE
Specific Gravity	-	2.02	2	2	2	1.83	1.88	-	BLACK	-	-	-	-	-
Hardness Shore A	D2240	81	78	76	74	75	72	94	8.6	72	88	-	89	71
Elongation at Break %	D638	153	152	129	230	150	163	65	100	206	163	185	108	150
Tensile Strength Mpa	D638	17	11	16	11	12	15	17	11	13	10	20	13	7
Compression set 70 Hrs@ 200˚C	D395	14	14	15	18	20	20	16	25	22	22	18	20	14
Max. Service Temperature	-	316	316	275	316	204	204	204	204	150	150	150	150	150
Min. Service Temperature ˚C	-	-	-	-	-	-19	-40	-26	-19	-32	-32	-35	-46	-72