Flat NBR rubber gasket and O-ring for machine sealing

A flat NBR rubber gasket should be matched to the machine's contact faces and closing space. An O-ring option requires its own corresponding seat, so the section must be identified before selecting a circular component. Custom material and dimensions allow the seal to follow the intended machine interface.

For a flat gasket, check the usable width of the mating faces and the position of openings or fasteners. For a circular-section ring, compare the groove dimensions and required ring size. The NBR formulation should suit the actual fluid, temperature, and cleaning conditions in either arrangement.

Install the component without pulling it across locating features. Keep the contact surfaces free of debris, and check alignment before closing the joint. During servicing, inspect the removed seal for patterns of uneven compression or edge damage and examine the mating parts where those patterns occurred. Replace the required section with its specified material rather than choosing a nearby ring solely because it passes around the same shaft, fitting, or opening.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. A Flat NBR rubber gasket should be matched to the machine's contact faces and closing space.

Custom dimensions

For a circular-section ring, compare the groove dimensions and required ring size.

Fit & assembly

For a flat gasket, check the usable width of the mating faces and the position of openings or fasteners.

Use & inspection

Replace the required section with its specified material rather than choosing a nearby ring solely because it passes around the same shaft, fitting, or opening.

Photos illustrate structure or material only. An O-ring option requires its own corresponding seat, so the section must be identified before selecting a circular component. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.