Custom made non-standard FKM NBR rubber gasket/O-ring

A non-standard FKM NBR rubber gasket can be developed for a joint whose geometry does not match a standard ring. FKM and NBR provide separate material choices, selected for the actual operating environment. The custom outline and section should follow the mating assembly in full.

Identify the dimensions that control fit rather than relying only on overall width or diameter. Offset openings, asymmetric edges, and changes in contact width can determine orientation and support. The seat also establishes the space available for compression when the parts close.

Select the formulation for the medium, temperature, and cleaning cycle. Lay the gasket into place without pulling it across locating features, then inspect the complete perimeter. Close the joint through the intended sequence so that no narrow area is displaced. During servicing, compare the replacement with the required geometry rather than the distorted outline of a used seal. Keep compound variants clearly distinguished when the same custom shape is used in different operating environments.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. The seat also establishes the space available for compression when the parts close.

Custom dimensions

Identify the dimensions that control fit rather than relying only on overall width or diameter.

Fit & assembly

Lay the gasket into place without pulling it across locating features, then inspect the complete perimeter.

Use & inspection

During servicing, compare the replacement with the required geometry rather than the distorted outline of a used seal.

Photos illustrate structure or material only. Offset openings, asymmetric edges, and changes in contact width can determine orientation and support. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.