Lehigh Gasket Company

sales@lehighgasket.com Phone 610-837-1818 Fax 610-837-9585

GORE-TEX GR™ SHEET GASKETING

WL Gore Sheet Gasket Material

100% Expanded PTFE

One material for all chemical services
Wide operating temperature and pressure range
No chemical or physical contamination
Does not adhere to or "bake" onto flange surfaces

High Compressibility - High Conformity

Easily seals against smooth, rough, or damaged flanges
Seals with low clamping force
No need to mitre or dovetail gasket sections -- simply overlap the jointed section

High Multi-directional Tensile Strength

Minimal creep/creep relaxation
No bolt retorquing required
Increased pressure and temperature resistance
Virtually impossible to overstress the gasket

Nondeteriorating

Gasket performance will not deteriorate with time

Sheet size:: 57" X 49"

Sheet thickness:: 1/16" or 1/8"

Chemical resistance:: Operating pH range 0-14; Will not react with or be degraded by any common chemical; Not recomended for use with molten alkali metals or elemental fluorine

Operating pressure range:: Vacuum to 3000 psig

Operating temperature:: -450°F to +600°F

Maximum gasket stress:: 22,000 psi @ 75°F

Gasket recovery:: 10%-16%

Average matrix tensile strength:: 9,000 psi

TYPICAL PHYSICAL PROPERTIES
ASTM TEST METHOD	PHYSICAL PROPERTY
F-37B	Sealability: Milliliters per hour Gasket stress - 2800 psi Internal pressure - 10 psig Milliliters per hour Nitrogen Gasket stress - 2800 psi Internal pressure - 30 psig	0.004 0.29
F-38	Creep Relaxation, %	35
F-36	Compressibility, %	73
F-36	Recovery, %	4
F-152	Tensile strength, psi	6,900
D-792	Specific gravity	0.60
FLAMABILITY: will not burn or support combustion MAXIMUM OPERATING TEMPERATURE = 600°F MAXIMUM OPERATING PRESSURE = 3000 psig MAXIMUM P x T (pressure psig x temperature °F) = 900,000 NOTES: Properties based on 1/8" (3 mm) sheet thickness Creep relaxation tests performed on 0.040" (1 mm) sheet thickness as required by ASTM Tensile strength expressed as matrix tensile strength (tensile strength under compression)

2-0xx O-Rings	2-1xx O-Rings	2-2xx O-Rings	2-3xx O-Rings	2-4xx O-Rings	3-9xx O-Rings
Parker Chomerics	Flange Gaskets	Parofluor Seals	W L Gore