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NSF-61 Certified EPDM, Full Face Gasket, Pipe Size: 4(4) Inches (10.16Cm), Thickness: 1/8(0.125) Inches (3.175mm), Pressure Tolerance: 150psi, Inner Diameter: 4 1/2(4.5)Inches (11.43Cm), Outer Diameter: 9(9)Inches (22.86Cm), With 8 - 3/4(0.75) (1.905
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