2 x GYLON 3504 PTFE Aluminosilicate 3.5mm Thick Gasket 4 1/2" Bore 6 3/8" OD.

2 x GYLON 3504 PTFE Aluminosilicate 3.5mm Thick Inside Bolt Gasket 4 1/2" Bore 6 3/8" OD.

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