Black Shower Seal - 4-6mm Glass, 16mm Bulb, 11-16mm Gaps

What this seal is

A black replacement seal for shower doors and bath screens fitted with 4–6mm glass — ideal where a clear or white seal would look wrong against a dark-framed enclosure. The rigid PVC U-section — about 10mm tall, with a 4mm mouth widening to a 6mm base — pushes onto the edge of the glass with no adhesive. Along the bottom runs a soft flexible 16mm hollow bubble that compresses to close gaps of 11mm to 16mm.

This profile is most often fitted along the bottom horizontal edge of a bath screen or shower door, and works just as well vertically on the upright of the glass, sealing the gap between the glass and the tiles or wall.

Specification

Why fit this seal

Stops leaks and protects your bathroom. A worn, split or missing seal is the most common cause of water pooling outside the shower. Replacing it takes minutes and protects flooring, skirting and plaster from long-term water damage.

Matches black hardware. This black profile blends with dark frames and matt-black fittings instead of standing out against them.

Soft bubble, tight seal. The flexible bubble along the bottom compresses to follow the tray or bath rim, keeping full contact across gaps of 11–16mm.

Cut to fit at home. Order the next length up and trim it down for a perfect fit, or use our custom cutting service and it arrives ready to fit.

Fitting in three steps

1. Measure. Check your glass is 4–6mm thick, measure the edge you need to seal, and check the gap you are closing sits between 11mm and 16mm.

2. Choose. Pick the nearest length at or above your measurement — from 800mm up to 2500mm — or add custom cutting and we cut it to size before dispatch.

3. Fit. Trim to length if needed, then push the U-section onto the edge of the glass from one end and work your way along, so the bubble faces the surface you are sealing against. Never slide the seal along the glass — this can damage it.

Not sure it fits?

Email a photo of your old seal or your measurements to sales@industrial-polymers.co.uk and our UK team will confirm the right profile and length before you order — usually the same working day. Got curved glass? We can curve this seal to your measurements — just get in touch and we'll send you our simple measuring guide.