Bifold Shower Seal - 5mm T-Head, 17mm Tall, Seals 12-17mm Gaps

What this seal is

A clear channel seal for bifold and sliding shower doors whose bottom rail sits well above the tray. The 5mm T-head slides into the aluminium or plastic channel on the door, and the tall 17mm flexible body closes gaps of 12–17mm beneath it — stopping water escaping under the door every time you shower.

It fits horizontally along the bottom rail of the door, and works just as well vertically to seal between the glass and the tiles or wall. No adhesive is needed — the T-head simply slots into the existing channel, though a little silicone can be added if you prefer.

Which height do I need?

This is the second-tallest profile in our ten-strong family of 5mm T-head seals. Check your channel slot takes a 5mm head (it may be very slightly narrower) and that your gap sits between 12mm and 17mm — if your gap is smaller or larger, another height in the family will suit better, and if you're between sizes, choose the larger: the soft blade compresses for a tighter seal.

Specification

Why fit this seal

Stops leaks under the door. A worn or missing channel seal lets water pool outside the shower, damaging flooring and skirting — replacing it takes minutes.

No adhesive, no mess. The T-head slides into the channel your door already has, and can be swapped again just as easily.

Ten heights, one family. Whatever your door-to-tray gap, there's a 5mm T-head profile to close it — this one covers 12–17mm.

Cuts with scissors. The soft PVC trims to the exact width of your door with ordinary household scissors.

Fitting in three steps

1. Measure. Check the channel slot is 5mm and measure the gap you need to close (12–17mm for this profile).

2. Choose. Pick 1000mm or 2000mm — whichever covers the width of your door — or our custom cutting service.

3. Fit. Slide the old seal out, clean the channel, cut the new seal to width and feed the T-head along the channel until seated.

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 height before you order — usually the same working day.