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The GYLON® Style 3504 gasket is made of PTFE with aluminosilicate microspheres. It is designed for use in many acids, some caustics, hydrocarbons, refrigerants, and more.

Nominal Pipe Size: 1/2
Pressure Rating (lbs): 300
Flange Standard (ASME): ASME B16.5
Thickness (In.): 1/16
Inner Diameter (In.): 0.840
Outer Diameter (In.): 3.750