Garlock GYLON® 3545 Layered Microcellular PTFE Gasketing

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Garlock GYLON® 3545 Layered Microcellular PTFE Gasketing
Categories:	Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE)
Material Notes:	Microcellular PTFE gasket with rigid PTFE core Highly compressible PTFE outer layers seal under low bolt load- suitable for many non-metallic flanges Compressible layers conform to surface irregularities, especially on warped, pitted or scratched flanges Rigid PTFE core reduces cold flow and creep normally associated with conventional PTFE gaskets Media: Strong caustics, strong acids, hydrocarbons, chlorine and cryogenics. Conforms to FDA regulations. Information provided by Garlock Rubber Technologies
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Physical Properties	Original Value	Comments

Density	2.05 g/cc	estimated by MatWeb
Permeability	0.015	Gas Permeability, cc/min; DIN 3535 Part 4

Electrical Properties	Original Value	Comments
Dielectric Strength	244 V/mil @Temperature 121 °C, Time 10800 sec	0.125 in. thickness; ASTM D149
	248 V/mil @Temperature 121 °C, Time 10800 sec	0.0625 in. thickness; ASTM D149
	222 V/mil @Thickness 1.59 mm	100% RH for 96 hours; ASTM D149
	264 V/mil @Thickness 3.17 mm	100% RH for 96 hours; ASTM D149

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	500 °F @Pressure 8.27 MPa	Continuous
Minimum Service Temperature, Air	-450 °F

Compliance Properties	Original Value	Comments
FDA	Yes

Descriptive Properties
Color	White
Compressibility, %	70-85	ASTM F36
Creep Relaxation, %	10	ASTM F38
Sealability ASTM F37B, ml/hr	0.15	ASTM Fuel A

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