Factory molded rubber seal silicone rubber parts

A molded rubber seal can include contact features shaped around a particular mating component. The useful design depends on where those features touch and how the rubber is supported during closure. The outside envelope is only part of the specification; local sections and transitions determine whether the seal remains positioned through its intended use.

Choose the silicone formulation for the contacting medium, operating temperature, and repeated opening conditions. Define the retaining or locating features separately from the active sealing region. Keep enough clearance for the designed deformation without allowing the rubber to be pushed into an unsupported gap.

Install in the intended orientation and inspect the full contact path before closing the assembly. Avoid pulling a narrow feature to align the rest of the part. During service, examine local damage alongside the mating surface that produced it. If one feature repeatedly tears or folds, correct that contact or alignment rather than enlarging the whole seal and changing regions that were previously working as intended.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Keep enough clearance for the designed deformation without allowing the rubber to be pushed into an unsupported gap.

Custom dimensions

The outside envelope is only part of the specification; local sections and transitions determine whether the seal remains positioned through its intended use.

Fit & assembly

Install in the intended orientation and inspect the full contact path before closing the assembly.

Use & inspection

During service, examine local damage alongside the mating surface that produced it.

Photos illustrate structure or material only. A molded rubber seal can include contact features shaped around a particular mating component. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.