Custom made silicone seal rubber sealing ring gasket

A rubber sealing ring gasket should be measured in its relaxed state when developing a replacement or custom version. An old ring removed from a joint may be stretched, flattened or permanently altered by use. Copying that condition can produce a new gasket that does not match the original seating geometry.

Use the receiving groove or sealing land to establish the relevant inner dimension, outer dimension and section thickness. This silicone version can be customized for the joint and selected exposure conditions. Consider how the ring is held before the mating component closes, particularly where gravity can pull it away from a vertical seat.

Install without twisting the ring or concentrating stretch in one area. After closing the joint, inspect for any section that has escaped the intended contact region. During later disassembly, note uneven marks that may reveal where the gasket was unsupported. Keep spare rings stored without tension and away from sharp objects. Their relaxed shape should remain easy to compare with the required geometry when the next assembly is prepared.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. An old ring removed from a joint may be stretched, flattened or permanently altered by use.

Custom dimensions

Use the receiving groove or sealing land to establish the relevant inner dimension, outer dimension and section thickness.

Fit & assembly

Consider how the ring is held before the mating component closes, particularly where gravity can pull it away from a vertical seat.

Use & inspection

A rubber sealing ring gasket should be measured in its relaxed state when developing a replacement or custom version.

Photos illustrate structure or material only. An old ring removed from a joint may be stretched, flattened or permanently altered by use. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.