Flange Rubber Gasket/ Black FKM Rubber Gasket

A Flange Rubber Gasket creates a flexible sealing layer between flange faces. The black FKM option should be selected for the actual medium and temperature, while the gasket outline, passage and fastening locations must match the flange geometry. The visible color does not identify an equivalent replacement material.

Inspect the seating faces and the support available around the passage. A gasket should not extend into an unsupported gap or obstruct an opening when the joint is aligned. Position the fastening holes without stretching the rubber, and check that any locating feature is used as intended.

Follow the specified assembly procedure for the joint so the gasket is brought into its working condition consistently across the flange. Uneven closure can pinch one region while leaving another inadequately seated. A material hardness choice cannot correct a warped face or mismatched hardware.

Evaluate the completed seal under the conditions intended for the flange. During service, make the assembly safe before opening and examine the full gasket surface. Extrusion near a passage, a torn fastening area or a strongly uneven compression pattern can identify a local support problem. Clean the faces and correct the cause before installing a new gasket. Preserve the evaluated FKM compound and geometry when replacing the part, and reassess the selection if the process medium or operating conditions change.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. Extrusion near a passage, a torn fastening area or a strongly uneven compression pattern can identify a local support problem.

Custom dimensions

Position the fastening holes without stretching the rubber, and check that any locating feature is used as intended.

Fit & assembly

Inspect the seating faces and the support available around the passage.

Use & inspection

During service, make the assembly safe before opening and examine the full gasket surface.

Photos illustrate structure or material only. The black FKM option should be selected for the actual medium and temperature, while the gasket outline, passage and fastening locations must match the flange geometry. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.