Silicone rubber seal plugs and stoppers/rubber stopper groups

Custom rubber stopper groups can provide multiple closure configurations for a product with different openings. Silicone plugs and stoppers should each be dimensioned around their assigned receiving surfaces. The group should remain organized by complete profile and material so similar parts are fitted to the correct positions.

Establish the body length, head clearance, and seating relationship for each opening independently. A larger hole may still have less space behind it, while a small service opening may need a more accessible head. Color or molded identification can support assembly organization, but should remain linked to those dimensions. Select the formulation for the actual exposure at each location rather than assume one rubber grade suits the entire product. Keep the contact surfaces clean during fitting and inspect the final position of every closure. During service, preserve the position identity of removed parts. Replacement should restore the intended configuration at each opening rather than substitute whichever stopper has the closest visible outline.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Establish the body length, head clearance, and seating relationship for each opening independently.

Custom geometry

A larger hole may still have less space behind it, while a small service opening may need a more accessible head.

Fit evaluation

Color or molded identification can support assembly organization, but should remain linked to those dimensions.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A larger hole may still have less space behind it, while a small service opening may need a more accessible head. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.