Custom waterproof rubber hole plugs/rubber seal cover

A rubber seal cover provides a custom molded closure around a receiving feature. The profile may fit over an outside end or use a plug body within an opening, depending on the intended design. The actual contact surfaces should be defined before the closure dimensions are chosen.

Check the seating depth, retaining area, and access for removal. A cover that stops against a shoulder too early may leave its edge lifted, while a plug that is driven too far can become difficult to remove. The compound needs to suit the medium, temperature, and cleaning exposure.

Fit the closure onto clean, smooth surfaces and inspect for uneven compression or rolled edges. Required waterproof behavior must be evaluated with the complete receiving assembly under its intended conditions rather than assumed from the loose rubber part. During reuse, examine the contact surface for cuts or permanent deformation. Replace an unsuitable profile with the matching geometry instead of relying on additional force or stretching to make a damaged cover remain in place.

Material options

Rubber compound options, customized alongside the profile and contact conditions.

Hardness selection

Solid rubber options: 30–90 Shore A. Check the seating depth, retaining area, and access for removal.

Custom geometry

The profile may fit over an outside end or use a plug body within an opening, depending on the intended design.

Fit evaluation

Required waterproof behavior must be evaluated with the complete receiving assembly under its intended conditions rather than assumed from the loose rubber part.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. The profile may fit over an outside end or use a plug body within an opening, depending on the intended design. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.