Custom molded high temperature resistant silicone clear plug

A silicone clear plug offers a closure whose appearance can make some aspects of seating easier to observe. The degree of visibility depends on the chosen silicone, wall thickness, surface finish and lighting. Select the finished appearance around the part's practical inspection needs rather than assuming the plug will behave like an optical window.

ETOL can mold the plug to suit the opening and required handling area, with hardness and dimensions developed for that fit. A thicker body may provide a different handling feel while also changing what can be seen through it. Examine the fitted sample under the lighting available at the assembly station, including whether an uneven seat or trapped residue can actually be identified.

For heated applications, establish the operating conditions for the selected formulation and complete assembly. The clear appearance does not indicate a temperature rating or confirm that the plug has remained undamaged after exposure.

Clean the closure using a compatible method and avoid abrasive tools that can cloud or score its surface. When inspecting it, check the contacting edge directly as well as looking through the body. A plug can still appear clear while a cut at the perimeter affects its fit. Replace a damaged part before it is returned to service.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. ETOL can mold the plug to suit the opening and required handling area, with hardness and dimensions developed for that fit.

Custom geometry

The degree of visibility depends on the chosen silicone, wall thickness, surface finish and lighting.

Fit evaluation

When inspecting it, check the contacting edge directly as well as looking through the body.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. The degree of visibility depends on the chosen silicone, wall thickness, surface finish and lighting. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.