FKM Black

Color – black

FKM Black is an elastomer based on fluoro-rubber and commonly known as FPM, VITON®. It has outstanding properties in resistance to high temperature, weathering, ozone and many chemicals. FKM Black has good chemical resistance to mineral oils and greases containing sulphur, HFD fluids, crude oil and sour gas but is not resistant to anhydrous ammonia, amines, ketones, esters, hot water and low-molecular organic acids.


Good resistance
Average resistance
Low resistance
Mineral oils
Hot water
Aliphatic hydrocarbons (propane, butane, petrol)
skidrol 500
Silicone oil and grease
ammonia, amines, alkali
Adipose and vegetable oils and grease
Hot steam
Low-molecular organic acids (acetic and formic acids)
Oils with soot and highly aromatic oils
Hydrofluoric acids, chlorosulfonic acids.
Fire-resistant hydarulic fluids HFD-S, HFD-R
Fire-resistant hydraulic fluids HFA, HFB, HFC
Polar solvents (acetone, methyl ethyl ketone, dioxane, ethylacetate)
Biodegradable hydraulic fluid
Brake fluids based on glycol


FPM black can be used for production of U-shaped seals, chevron seals, wipers and non-standard seals. FKM black is mainly used in cases with temperature and chemical stress. Also it is used in hydraulic systems with fire-resistant hydraulic fluids HFD.

Mainly used

  • Non-standard seals in chemical industry and thermal engineering in metallurgy
  • Rotary shaft seals
  • O-rings
  • Hydraulic seals for HFD-fluids

MVQ Material Data Sheet

Hardness at 20°:
85 +/-2
Shore A
DIN 53505
DIN ISO 1183-1
100% Modulus:
DIN 53504
300% Modulus:
> /
DIN 53504
Tensile strength:
DIN 53504
Elongation at break:
DIN 53504
Rebound resilience:
DIN 53512
Tear strength:
DIN ISO 34-1
DIN 53516
Compression set:*
DIN ISO 815-1
Compression set:**
DIN ISO 815-1
Compression set:***
DIN ISO 815-1
Compression set:***
Min. service temperature:
Max. service temperature (short term):
+210 (+230)

*Compression set @ 23°C, 72 hours, 10% deflexion
**Compression set @ 70°C, 24 hours, 20% deflexion
***Compression set @ 100°C, 24 hours, 20% deflexion
****Compression set @ 225°C, 22 hours, 10% deflexion

All above established data results from random tests which were taken from the functioning production. All data was stated based on standard test-products in accordance with ISO, DIN and ASTM standards and can substantially not be extended to the completed seal. Our practical technical recommendation, either oral, written or through tests is given in conformity with our best knowledge. However, this data is to be regarded as non-obligatory advice, also taking into consideration any protective rights of a third party, and does not acquit you from making tests with our product in relation to its adaptability for the assigned process and intendment. Utilization, application and processing of the products befall completely outside of our control and are therefore solely your liability. As regards the responsibility, it will be limited to all damages in the value of the product which we delivered and you applied. Certainly, we do assure the immaculate quality of our products in concordance with our general sales and delivery conditions.