Factory customized rubber seal gasket washer

A rubber seal specification should define the actual contact section needed by the assembly. A flat annular washer and a shaped perimeter gasket can serve different joint geometries despite being made from similar materials. The custom design should follow the mating faces, openings, and retaining features that determine where compression occurs.

Choose dimensions and compound around the medium, temperature, and movement involved. Check the available support beneath every sealing region and keep the rubber from extending into an unintended gap. The intended closing position should guide thickness rather than the desire to add more flexible material.

Fit the selected part flat and aligned before tightening. Inspect for folds or an edge dragged out of position. During service, compare the contact pattern with the surrounding hardware before replacing the seal. Correct an uneven face or locating problem where needed, since a new custom outline cannot compensate for a joint that no longer presents the contact surfaces for which that outline was designed.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. The intended closing position should guide thickness rather than the desire to add more flexible material.

Custom dimensions

A flat annular washer and a shaped perimeter gasket can serve different joint geometries despite being made from similar materials.

Fit & assembly

Check the available support beneath every sealing region and keep the rubber from extending into an unintended gap.

Use & inspection

During service, compare the contact pattern with the surrounding hardware before replacing the seal.

Photos illustrate structure or material only. A rubber seal specification should define the actual contact section needed by the assembly. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.