Description FR58/90 is a James Walker compound based on a Viton® fluoroelastomer FKM terpolymer from DuPont Performance Elastomers. It is specially formulated for ED resistance.
Special features
Norsok M-710 qualified for explosive decompression (ED) resistance and sour gas (H2S) ageing.
Excellent ED resistance in hydrocarbon applications.
Exellent thermal and chemical properties.
Suitable for many high-pressure gas applications.
Approved and specified by many oil producers and equipment manufacturers.
Temperature capability From -12°C (at atmospheric pressure) to +210°C (+10°F to +410°F).
Typical physical properties for FR58/90
Hardness: 88 IRHD Tensile strength: 14MPa (2030psi) Modulus at 50% elongation: 5.5MPa (800psi) Elongation at break: 190% Low temperature torsion modulus T70 : -12°C (10°F)
Air ageing: 70 hours @ 125°C (257°F) Change in hardness: 0 IRHD Change in TS: -6% Change in E @ B: -15%
Fluid immersion testing: ASTM #1, 7 days @ 150°C (302°F) Change in hardness: +1 IRHD Change in TS: -10% Change in E @ B: +5% Change in volume: 0%
Fluid immersion testing: IRM 903, 7 days @ 150°C (302°F) Change in hardness: +1 IRHD Change in TS: -20% Change in E @ B: -20% Change in volume: +1%
Fluid immersion testing: Forties Crude Oil, 28 days @ 80°C (176°F) Change in hardness: -6 IRHD Change in TS: -33% Change in E @ B: -17% Change in volume: +4%
All tests carried out in accordance with BS903, relevant section or equivalent.
Click here to download Sealing Guide for the Oil & Gas Industry pdf (1.54MB)
