Custom molded round rubber seal/molded rubber O-ring

A round rubber seal should be selected by its section and retaining geometry as well as its circular outline. A molded O-ring needs a groove that supports the round section, while a flat circular gasket relies on face contact. Matching the outside diameter does not make these arrangements interchangeable.

To order a custom molded O-ring from ETOL, define the installed diameter, section size and required quantity. Check the closing gap and support in the direction of any pressure. Select the compound for the actual medium, temperature, and movement. Protect the fitting route from sharp edges that can damage the surface before the part reaches its seat.

Install without twist in a round section ring or folds in a flat seal. Keep the contact path clean and inspect before closure. During service, compare localized damage with the corresponding hardware feature. Correct an unsupported region or alignment issue rather than moving to a thicker approximate seal, which can disturb the intended closing condition without addressing why the previous part was damaged.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Check the closing gap, installed diameter, and support in the direction of any pressure.

Custom dimensions

A molded O-ring needs a groove that supports the round section, while a flat circular gasket relies on face contact.

Fit & assembly

Protect the fitting route from sharp edges that can damage the surface before the part reaches its seat.

Use & inspection

During service, compare localized damage with the corresponding hardware feature.

Photos illustrate structure or material only. A round rubber seal should be selected by its section and retaining geometry as well as its circular outline. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.