Customized Square EPDM Rubber Seal/ FKM rubber gasket seals

A square EPDM rubber seal follows a defined joint outline with a custom rubber profile. FKM is another material option for applications that require a different compound selection. The square geometry and material choice should be established independently, then assessed together in the actual joint.

The seal needs support along its full path. Corner transitions, contact width, and available section height determine how it sits between the mating parts. A square outside dimension alone does not show whether the inside opening or sealing band matches the joint. Avoid stretching a ring into position if its corners or sides do not follow the intended seat.

Select the formulation for the process medium, temperature, and cleaning exposure. Before assembly, remove residue from the mating faces and place the seal without twists or folds. Keep it located as the joint closes, particularly along sections that are hidden from view. During servicing, retain the correct compound identity and section dimensions. A visually similar square gasket made for another medium should not be substituted simply because it fits the same outer space.

Material options

EPDM / FKM. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. Avoid stretching a ring into position if its corners or sides do not follow the intended seat.

Custom dimensions

Corner transitions, contact width, and available section height determine how it sits between the mating parts.

Fit & assembly

Before assembly, remove residue from the mating faces and place the seal without twists or folds.

Use & inspection

Select the formulation for the process medium, temperature, and cleaning exposure.

Photos illustrate structure or material only. A Square EPDM Rubber Seal follows a defined joint outline with a custom rubber profile. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.