Custom molded silicone gasket rubber seal

Custom molded silicone seals and gaskets can follow joints that do not suit a simple standard ring. The molded outline should include the features needed to locate it and maintain a supported sealing path. An irregular shape still needs a practical assembly method that preserves its relaxed geometry.

Identify the reference points, narrow transitions, and any openings that must remain clear. The gasket should not be stretched between locating features merely to make its outside edge fit. Consider how the enclosure approaches the part, since a sliding or angled closure can move the rubber before compression is established.

Check position before completing fastening and evaluate the assembled joint under its specified conditions. During servicing, lift the gasket from appropriate supported areas rather than pulling on one thin section. Inspect for folds, tears, and a lasting change in shape before reuse. If damage repeatedly occurs near a particular locating feature, review that fit or removal method instead of assuming that a new gasket of the same profile will avoid the problem.

Material options

Silicone, with EPDM, NBR or other rubber alternatives selected for the mating surfaces and contact medium.

Hardness range

Rubber: 30-90 Shore A; silicone: 20-80 Shore A. Final hardness depends on the selected compound and part design.

Custom shape & size

Seal perimeter, cross-section, thickness and openings customized to the mating groove or flange.

Color & OEM

Custom colors; OEM packaging and identification options appropriate to the sealing design.

Tooling & samples

Tooling and samples developed after reviewing the sealing gap and assembly compression.

The gasket photos illustrate structure and material only. ETOL's factory can customize silicone and rubber seals around your flange or groove, coordinating non-standard outlines, openings and cross-sections with the closed joint.