Hot-selling rubber silicone washer/O-ring with different sizes

A rubber silicone washer can be custom sized to the mating opening and supported contact area. Where several ring sizes are used in one product, the inside dimension, outside boundary, and thickness should remain clearly distinguished. Similar overall appearance is not enough to establish interchangeability.

Compare the functional dimensions with the actual seat. A slightly larger center opening may leave less useful contact width, while a thicker section can change the final closing position. An O-ring and a flat washer also require different section references even if their outside diameters appear similar.

Select the material for the contents and temperature before installation. Keep size variants separated while servicing an assembly, and position each ring without stretching it to reach its locating feature. Check that it remains flat or correctly seated before the mating part closes. During replacement, use the required original geometry rather than copying a worn component whose section has changed. Store spare rings away from heavy objects that could leave lasting deformation before they are used.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. A slightly larger center opening may leave less useful contact width, while a thicker section can change the final closing position.

Custom dimensions

Where several ring sizes are used in one product, the inside dimension, outside boundary, and thickness should remain clearly distinguished.

Fit & assembly

Check that it remains flat or correctly seated before the mating part closes.

Use & inspection

Keep size variants separated while servicing an assembly, and position each ring without stretching it to reach its locating feature.

Photos illustrate structure or material only. A slightly larger center opening may leave less useful contact width, while a thicker section can change the final closing position. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.