Buna-N rubber gasket seal O-ring for industrial machine

Industrial seals and gaskets made from Buna-N must match their specific joints; an O-ring needs a supported groove for its round section. The custom ring dimensions and section should follow the mating parts, while the formulation suits the fluid, temperature, and expected contact duration. Different positions within one machine may require different seals despite similar appearance.

Identify the locating arrangement before removing the old component when practical. A groove, flat face, or shoulder determines how the ring is retained and compressed. Use those features to select the replacement rather than relying solely on the shape of a worn gasket.

Clean the contact path and inspect it for damage during maintenance. Fit the new ring without twisting it and keep the mating parts aligned during closure. Follow the machine's intended servicing and fastening method. If the removed gasket shows repeated damage at one location, check the corresponding surface or clearance instead of simply fitting a thicker part. Preserve the specified Buna-N formulation and full profile when restoring the joint to its intended condition.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. A groove, flat face, or shoulder determines how the ring is retained and compressed.

Custom dimensions

The custom ring dimensions and section should follow the mating parts, while the formulation suits the fluid, temperature, and expected contact duration.

Fit & assembly

Fit the new ring without twisting it and keep the mating parts aligned during closure.

Use & inspection

Clean the contact path and inspect it for damage during maintenance.

Photos illustrate structure or material only. A Buna-N rubber gasket for an industrial machine needs to match the specific joint where it is installed. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.