Custom food grade gaskets and seal round rubber gaskets

Round rubber gaskets need an inner opening that clears the intended passage and an outer boundary that remains supported by the joint. Increasing the ring width may add rubber without adding useful sealing contact if the mating surfaces do not support it. Custom dimensions allow those boundaries to follow the actual assembly.

For a food related seal, choose the material formulation for the contents and cleaning conditions. Check whether the gasket could project into the flow or storage area after compression. The joint should close without pushing an unsupported edge inward or trapping it outside the intended seat.

Evaluate representative components together, including normal dimensional variation. A ring that appears centered before closing may shift when one mating surface turns against it. Keep the surfaces clean and use the intended closure sequence. During inspection, compare the compressed contact pattern with the available sealing land. A very narrow or uneven imprint can be more informative than the gasket's overall diameter when identifying why the fit needs adjustment.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. A ring that appears centered before closing may shift when one mating surface turns against it.

Custom dimensions

Round rubber gaskets need an inner opening that clears the intended passage and an outer boundary that remains supported by the joint.

Fit & assembly

The joint should close without pushing an unsupported edge inward or trapping it outside the intended seat.

Use & inspection

For a food related seal, choose the material formulation for the contents and cleaning conditions.

Photos illustrate structure or material only. Increasing the ring width may add rubber without adding useful sealing contact if the mating surfaces do not support it. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.