Collection: Shower Door Bottom Seals

30,000-Cycle Certified Seals for 4mm, $6$ mm, $8$ mm & $10$ mm Glass.

Choose the right one — by glass thickness, gap size, and door type.

All our seals are compatible with major UK shower brands.

Free UK delivery • 10-month warranty • Easy DIY installation • Limescale & Mould Resistant

Comparison of cross-sectional thickness between other brands' bottom sealing strips and SIMBA bottom sealing strips

Why SIMBA Seals Last Longer

Most seals look the same — until you’ve used them.

SIMBA seals are made for real homes, real showers, real results.

Read: Why SIMBA different

10-Month Warranty

30-Day Hassle-Free Returns

Free UK Shipping

Secure payment

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Buy 1 Bottom Gasket, Get 1 Threshold Seal FREE

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Better Together: Bottom Gaskets + Threshold Strip

A shower door bottom gasket works best when paired with a threshold seal — especially for frameless shower doors or screens.

Used together, they form a watertight barrier that stops frameless door leaks, even under strong water pressure.

Pair them up, and your bathroom stays dry.

Shower Threshold Seal

FAQ About Shower Door Bottom Seal

Replace your shower door bottom seal if it’s cracked, loose, mouldy, covered in limescale.

A fresh one makes a big difference.

SIMBA seals are built to last over 30,000 door cycles

All our seals can be trimmed to size.

Yes! Several of our seals are perfect for pivot-style enclosures. Be sure to check the gap and thickness.

Great Q!

That squeaking sound usually means the seal is too tight — it’s being squashed in a gap that’s too small.

Choose a bottom seal that matches your shower door’s gap properly.

Pick the right one, and the noise will disappear.

Yes — but only if you choose a curved bottom seal.

Curved shower doors need seals that follow the glass shape rather than forcing it straight.

No. Please refer to our article ‘Why Bulb Shower Door Seals Never Be Installed at the Bottom’.

Read out post know more about Single vs. Twin Fin Shower Bottom Seals

If the gap between you open the shower door and the floor feels too tight to work with, a push-in seal might be hard to install — especially if there’s not enough room to tilt or push it in properly.

In that case, an adhesive bath seal is a smarter choice — especially when paired with a threshold strip.

Even if a push-in seal might fit, but installation feels like a struggle, adhesive seals can save you time and frustration.

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Customers feedback

Arrived the next day

The shower door bottom gasket arrived the next day in perfect condition in a strong cardboard tube. Brilliant service. I like to commend the website too as it is full of the dimensions of each seal so identifying the correct part was easy.

Brilliant service and product

Seal for my very awkward shower door was delivered so quickly and worked a treat! Fantastic service and fantastic product which I literally couldn’t find anywhere else!!!! Thank you!!!

Great company

The clear and thorough website guidance, availability of samples for double-checking size and profiles, and ready access to personal advice if needed were all much appreciated. So was the swift and efficient despatch of my order.

Perfect replacement bifold door seal

Had a rubber bottom strip deteriorated on a my shower bifold hinge section between the two doors, couldn’t find a replacement from the manufacturer (Coram, Optima) as doors were so old. Took a chance as the ‘T’ seals are the same measurement. Fitted perfectly, really happy.