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G77X

Perlast G77X is a specially formulated high-temperature resistant perfluoroelastomer (FFKM) compound. It is the latest generation of FFKM which offers outstanding thermal resistance, lower compression set and enhanced sealing force retention at extreme temperatures.

Perlast® G77X is suitable for both dynamic and static applications and can be fully moulded into O-rings (any size up to 2.5m/8ft external diameter) and custom shapes.

Excellent thermal resistance at temperature (up to 350oC short term
exposure)
Enhanced physical properties including very low compression set
Meets AMS 7257E requirements
Offers broad chemical resistance in a wide variety of media including acids, caustics, ketones, aldehydes, esters, ethers, alcohols, solvents, sour gases and hydrocarbons (not recommended in severe aqueous, steam and amine applications)

Other materials in the range

Material type

FFKM

Color

Black

Hardness (Shore A)

Tensile Strength (MPa)

Elongation at break

158 %

50% Modulus MPA

6.0 MPa

100% Modulus MPA

14.9 MPa

Compression Set (%): 24 h @ 330 ˚C (392 ˚F)

25%

Compression Set (%): 72 h @ 330 ˚C (392 ˚F)

45%

Minimum Operating Temperature

-15 ˚C (+5 ˚F)

Maximum Operating Temperature

+350°C (+662°F)

Continuous Use Temperature

+310°C (+590°F)