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Color – black
FKM black – fluoropolymer elastomer, also known as FKM brown.
This material has similar characteristics than FKM brown: resistance to high temperatures, different chemical ingredients, weathering, ozone and hot air.
FKM black is compatible with mineral oils, HFD hydraulic fluids, raw petroleum and sour gas. Temperature range: from -20°C up to +220°C.
Resistance
| Good resistance | Medium 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 |
| Fuels | — | 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 |
| Aromatic hydrocarbon (toulene, benzol) | — | — |
Application
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
| Properties | Value | Unit | Standard | |
| Hardness | 83 | Sh A | DIN 53505 | |
| Density | 1,80 | g/cm³ | DIN EN ISO 1183-1 | |
| Compression set 175°C / 22 h | 8 | % | DIN ISO 815-1 | |
| Rebound resilience | 9 | % | DIN 53512 | |
| Tensile strength | 11,2 | MPa | DIN 53504 | |
| Elongation at break | 202 | % | DIN 53504 | |
| Tear strength | 7,1 | N/mm | DIN ISO 34-1 A | |
| Abrasion | - | mm³ | DIN 53516 | |
| Min. service temperature | -20 | °C | ||
| Max. service temperature | +220 | °C |
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.
