Customized molded rubber washer/clear silicone O-ring

A clear rubber O-ring molded in silicone should be inspected for surface damage and trapped particles before it is placed in its groove. Its appearance can make some defects less obvious under poor lighting, so the full circumference deserves attention. The transparent finish does not establish material purity or application suitability; the selected formulation must match the actual service conditions.

Choose section size and installed diameter around the groove and closing gap. Include the contacting medium, temperature, and cleaning exposure. A colored molded washer uses a different face section and should remain separately identified where both formats are used.

Fit the ring without twist and protect it from sharp edges on the assembly route. Keep the groove clean before closure. During maintenance, examine any cut or persistent deformation alongside the mating feature that contacted it. Preserve the intended compound and dimensions when replacing the ring instead of choosing another clear part solely because it looks similar to the removed seal.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Choose section size and installed diameter around the groove and closing gap.

Custom dimensions

A colored molded washer uses a different face section and should remain separately identified where both formats are used.

Fit & assembly

Fit the ring without twist and protect it from sharp edges on the assembly route.

Use & inspection

A clear silicone O-ring should be inspected for surface damage and trapped particles before it is placed in its groove.

Photos illustrate structure or material only. The groove diameter and closed gap define the clear silicone ring more reliably than its appearance. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.