Our brass tube plugs are made with a brass nut and bolt assembly. We manufacture the collar and washers from a non-water soluble hard plastic called Hytrel and the silicone parts are of a vulcanized silicone rubber.

These plugs are offered in either double size (two silicone parts) or a single size (one silicone part). The single plugs are recommended for lower pressures and the doubles are for pressures between 60 psi and 150 psi.

Please refer to the Question and Answer section for more information.