Slottex-Stopfen 20.5 mm UNF-Gewinde 9/16-18 Gelb PA

Sealing Slottex Plugs (Type 3) with an inverted head style, have a double sealing ring on the underside of the flange that provides positive sealing. Head is designed not to trap liquid. Quick and easy to fit using a screwdriver, spanner, socket or allen key. Can be tightened manually or with a power tool.