Rectangular Rubber Cover Waterproof Silicone Cap

A Rectangular Rubber Cover can be customized as a silicone cap for an opening or exposed component. Length, width and corner contours determine the outline, while cover depth determines how far it overlaps the mating part. All of these features need to agree with the intended contact and available clearance.

Check the cap at each corner during fitting. The long sides may look settled while one corner has caught on the component beneath it. A deep cover also needs room internally so it does not bottom against a projection before its perimeter reaches the intended seat.

Select material and hardness for the working environment. Where water protection is required, evaluate the cover on the complete assembly under the expected exposure, including adjacent joints. During cleaning or removal, avoid prying against a thin corner. Inspect the cap for cuts and lasting distortion before refitting, and clear the mating rim of particles. An undamaged rectangular outline helps the cover return to the same position around the full perimeter.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Select material and hardness for the working environment.

Custom geometry

Length, width and corner contours determine the outline, while cover depth determines how far it overlaps the mating part.

Fit evaluation

Where water protection is required, evaluate the cover on the complete assembly under the expected exposure, including adjacent joints.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. Length, width and corner contours determine the outline, while cover depth determines how far it overlaps the mating part. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.