Custom wear-resistant rubber seal/round rubber washer/gasket

A round rubber washer fits around a central feature while providing a flexible contact area between surrounding faces. This custom version can be sized for the opening and the available land on either side. Centering is particularly useful where the washer is hidden as the joint closes.

An oversized bore may allow the part to move sideways before compression, while a tight bore can drag against the central feature and twist the washer. The outer edge should also stay within its intended seat. A locating recess can help position the part, provided its depth and profile are compatible with the selected thickness.

Bring the mating components together without scraping the washer across a rough surface. If one component turns during tightening, consider how that rotation reaches the rubber contact face. The compound should suit any sliding contact and the surrounding medium. After disassembly, look for an off-center impression or localized edge wear; these marks can reveal alignment problems that were concealed while the joint was closed.

Material options

Rubber. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. A round rubber washer fits around a central feature while providing a flexible contact area between surrounding faces.

Custom dimensions

A locating recess can help position the part, provided its depth and profile are compatible with the selected thickness.

Fit & assembly

Centering is particularly useful where the washer is hidden as the joint closes.

Use & inspection

An oversized bore may allow the part to move sideways before compression, while a tight bore can drag against the central feature and twist the washer.

Photos illustrate structure or material only. A locating recess can help position the part, provided its depth and profile are compatible with the selected thickness. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.