butyl rubber plug custom various silicone rubber plug

A butyl rubber plug should be selected for the actual closure environment as well as the opening geometry. Butyl and silicone represent different material options, so a similar molded shape does not make the formulations interchangeable. The relevant fluid, surrounding conditions, and removal pattern help determine which configuration is suitable.

Define the surface where the plug will engage. A head diameter does not describe an inserted stem, and an entry taper does not establish the final working diameter by itself. Include the available depth and any shoulder or internal obstruction that could stop the closure before its contact area is seated.

Evaluate the fitted plug with the intended mating component and exposure. Do not infer a pressure rating or universal chemical resistance from the material name. During reuse, check the working section for swelling, cuts, or a lasting change in shape and consider whether the cause is mechanical fit or material exposure. Matching the old part's outside appearance alone will not resolve a formulation that is unsuitable for the application.

Material options

Custom silicone or butyl rubber formulation; select the compound alongside the mating geometry.

Hardness selection

Silicone: 20–80 Shore A; solid rubber: 30–90 Shore A. The relevant fluid, surrounding conditions, and removal pattern help determine which configuration is suitable.

Custom geometry

Include the available depth and any shoulder or internal obstruction that could stop the closure before its contact area is seated.

Fit evaluation

Evaluate the fitted plug with the intended mating component and exposure.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A butyl rubber plug should be selected for the actual closure environment as well as the opening geometry. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.