Custom made rubber seal gasket/rubber washer/O-ring

A rubber seal gasket should leave a supported sealing band around each opening in the joint. Closely spaced holes or passages can reduce that width and make local alignment especially important. The custom outline should follow the mating faces so the rubber remains where the closing force is applied.

Choose thickness around the available gap and identify whether a flat gasket, washer, or O-ring format is required at each position. A ring with a similar outer diameter is not a substitute for a shaped gasket that controls several contact paths.

Place the part flat without stretching it to align distant features. Bring the adjoining face down evenly and inspect for an edge displaced into a passage. During maintenance, look for localized tears between openings or near fasteners. Correct alignment and support where needed before replacement rather than widening an opening by trimming the rubber and reducing the sealing material that remains beside it.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. The custom outline should follow the mating faces so the rubber remains where the closing force is applied.

Custom dimensions

Choose thickness around the available gap and identify whether a flat gasket, washer, or O-ring format is required at each position.

Fit & assembly

Place the part flat without stretching it to align distant features.

Use & inspection

Correct alignment and support where needed before replacement rather than widening an opening by trimming the rubber and reducing the sealing material that remains beside it.

Photos illustrate structure or material only. A ring with a similar outer diameter is not a substitute for a shaped gasket that controls several contact paths. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.