Place of Origin:
Dongguan, Guangdong & ShangRao, Jiangxi
Brand Name:
ORK
Certification:
IATF16949, ISO9001, ISO14001, ISO45001, ISO13485,FDA, WRAS, LFGB,UL, ROHS, REACH compliant material
Model Number:
Standard/Nonstandard or As per drawing
Combining high-temperature resistance with outstanding chemical resistance, fluorocarbon-based compounds come close to the ideal universal O-ring material. This FKM O-ring is engineered for demanding aerospace and industrial sealing applications where reliability under extreme conditions is essential.
High-fluorine grades offer greater resistance to swell in high-octane and oxygenated fuel blends, delivering superior performance in ethanol- and methanol-blended gasoline. Base-resistant grades provide improved resistance to amine-based oil protectants found in new transmission oils, along with better steam resistance for higher-temperature service. Low-temperature bases can improve performance down to -40°F.
Newly available polymers offer improved chemical resistance and low-temperature performance. FKM® Extreme™ ETP provides chemical compatibility similar to Kalrez™, with temperature performance featuring a TR(10) of -40°F and brittleness down to -76°F.
Fluorocarbons (FKM®s) are not recommended for exposure to ketones, amines, low-molecular-weight esters and ethers, nitro hydrocarbons, hot hydrofluoric or chlorosulfonic acids, or Skydrol® fluids. They are also not recommended for applications requiring good low-temperature flexibility.
ASTM D2000 M2HK 710 A1-10 B37 B38 EO78 EF31 F13 Z = Hardness 75±5
| Original Properties | Specification | Test Result |
|---|---|---|
| Hardness, Shore A | 75° ± 5 | 73 |
| Tensile Strength, MPa, min | 10 | 10.9 |
| Ultimate Elongation, %, min | 150 | 213 |
| Specific Gravity (g/cm³) | 1.85 ± 0.08 | 1.87 |
| Heat Resistance — 70 h at 250°C (A1-10) | Specification | Test Result |
|---|---|---|
| Change in Hardness, points | +10 | +5 |
| Change in Tensile Strength, % | -25 | +26 |
| Change in Ultimate Elongation, max % | -25 | -18 |
| Compression Set, max, 22 h at 175°C (B37) | 50 | 21.5 |
| Compression Set, max, 22 h at 200°C (B38) | 50 | 28.3 |
| Fluid Resistance — Fuel 101, 70 h at 200°C (EO78) | Specification | Test Result |
|---|---|---|
| Change in Hardness, points | -15 to +5 | -13 |
| Change in Tensile Strength, max % | -40 | -20.7 |
| Change in Ultimate Elongation, max % | -20 | -8.3 |
| Change in Volume, % | 0 to +15 | +10.5 |
| Fluid Resistance — Fuel C, 70 h at 23°C (EF31) | Specification | Test Result |
|---|---|---|
| Change in Hardness, points | ±5 | -4 |
| Change in Tensile Strength, max % | -25 | -20.2 |
| Change in Ultimate Elongation, max % | -20 | -18.6 |
| Change in Volume, % | 0 to +10 | +5 |
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