Window rubber seal strip epdm rubber sealing strip

A rubber seal strip follows the frame interface where a window needs a flexible closing contact. EPDM is identified for this custom strip, with size and color selected around the window design. The cross-section should match the retaining feature and the gap that remains when the window reaches its closed position.

Begin by examining the gap around the whole frame. Corners, hinges, and adjoining frame sections can introduce local differences, and the seal must fit those areas without being overcompressed elsewhere. A strip that is too large may make closure difficult; one that is too small may leave discontinuous contact. Assess the installed profile with the actual window closed and secured.

During fitting, avoid stretching the strip lengthwise to make it reach a corner or joint. A stretched section can pull back later and create a gap at an end. Corners should follow the intended joining method, keeping the contact profile correctly oriented through each change in direction. The retaining portion needs to sit fully in its channel rather than leave a raised section under the closing surface.

Keep the frame seat clean before installation and remove ordinary deposits from the accessible seal during care. If closure becomes uneven, inspect the frame alignment and hardware as well as the rubber. The completed window determines weather sealing performance; the strip should be evaluated within that complete assembly under the intended exposure.

Material options

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

Hardness selection

Rubber: 30–90 Shore A. A Window rubber seal strip follows the frame interface where the window needs a flexible closing contact.

Custom dimensions

The cross-section should match the retaining feature and the gap that remains when the window reaches its closed position.

Fit & assembly

Keep the frame seat clean before installation and remove ordinary deposits from the accessible seal during care.

Use & inspection

If closure becomes uneven, inspect the frame alignment and hardware as well as the rubber.

Photos illustrate structure or material only. During fitting, avoid stretching the strip lengthwise to make it reach a corner or joint. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.