• Cross-section view of the S12 heavy-duty 12mm shower door brush seal installed on thick glass, demonstrating the secure grip of the clear U-channel and effective black bristle barrier.
  • Detailed technical dimension diagram of the S12 12mm glass brush seal, specifying exact inner width, bristle height, and channel thickness to ensure a perfect fit for heavy frameless enclosures.
  • Macro close-up of the S12 premium clear U-channel highlighting its high-gloss finish and crystal clarity, designed to maintain the luxury aesthetic of 12mm frameless shower screens.
  • High-resolution detail shot of the S12 transparent profile and dense black soft bristles, showcasing superior optical clarity and anti-yellowing properties ideal for modern UK bathroom renovations.
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12mm Glass Shower Door Seal With Brush S12

£29.88
£38.70 £29.88
Sold out
-23%
Taxes included. Shipping calculated at checkout.
Total Length: 2000mm
Gap: Seal 0mm

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Description

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Key Specifications

Catalog No. S12
Glass Thickness 12mm Architectural Glass
Seal Type High-Density Water-Repellent Pile
Installation Push-on (No glue required)
Length 2000mm Clear Profile
Free UK Shipping | VAT Inc. 10-Month Warranty
Why choose the SIMBA B12? +

❌ Problem: Your heavy door rattles or sticks?

Standard plastic fins create friction, making heavy 12mm doors hard to move. Our high-density brush acts as a silent buffer, allowing the glass to glide smoothly without that annoying metallic "clanking" sound.

❌ Problem: Feeling a chill during your shower?

The multi-layer pile creates a "Thermal Barrier." It effectively traps steam inside the enclosure and blocks cold UK drafts from entering through the gaps.

❌ Problem: Worried about installation?

No professionals needed. The U-channel is pre-tensioned specifically for 12mm glass. Simply snap it on for a permanent-style grip.

Product FAQ

Is this seal suitable for commercial steam rooms? ▾
This profile is designed for domestic and light commercial shower enclosures (<70°C). For high-temperature Steam Rooms or Saunas, we recommend our specialist High-Temp TPE range.
Can the length be trimmed? ▾
Easily. While the 2000mm profile is standard for most UK doors, it can be trimmed to your exact height using a junior hacksaw or sharp garden snips.
Will the brush stay effective in hard water areas? ▾
Yes. The water-repellent pile is designed to resist limescale build-up, ensuring the brush remains soft and flexible even in London and other hard water regions.

Upgrade Your Bottom Seal

If you need maximum water protection for your heavy glass enclosure, we recommend you browse our full heavy-duty bottom seal collection to find a profile that actively directs water back into your tray.

Delivery & Shipping Information

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We aim to dispatch all orders placed before 2 PM on the same day. Orders placed after 2 PM usually ship the next working day.

Important: Our automated system selects the best courier based on your address, order size, and quantity.

Delivery Summary

  • UK Mainland Standard: 2–3 working days (FREE).
  • Highlands, Islands & NI: 3–7 working days (Calculated at checkout).

A small surcharge applies to remote areas (Highlands/Islands/NI). This is clearly calculated when you enter your postcode.

If your order hasn't arrived within 5 working days (any service), please email us immediately at info@showerdoorseal.uk.

Compliance Information

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Product Safety

Manufacturer Name: SIMBA International Limited

Address:No.25-2, Fuke North Road,

Luosong Village, Fusha Town,

Zhongshan, Guang Dong, China

Contact: support@glassseals.com

View full details
Cross-section view of the S12 heavy-duty 12mm shower door brush seal installed on thick glass, demonstrating the secure grip of the clear U-channel and effective black bristle barrier.
12mm Glass Shower Door Seal With..
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Replacement seals for bi-fold, framed and semi-framed shower doors.

A Better Chance of Getting the Right Fit

For selected profiles, your order may include 2–3 closely matched finished seals, packed together at no extra charge. Small measurement differences can be difficult to confirm at home, so we include nearby options where this helps reduce the risk of ordering the wrong fit. Each seal is complete and ready to fit. Simply use the one that suits your shower door best.

Photo guide showing what to send for shower door seal matching

Not sure which seal you need?

Send us a photo of your shower door edge and gap — we’ll help you find the right fit.

Contact via WhatsApp
Fitting and care guide for shower door seals with simple do and don't instructions

About SIMBA Seals UK

SIMBA Seals UK specialises in replacement shower door seals, supported by a glass seal manufacturing team working with seal profiles since 1998.

We help customers match seals by glass thickness, gap, profile and door design, with access to over 9,000 profiles for older or harder-to-match enclosures.

Compare Similar Seal Options

Hand-picked by our team based on similar glass thickness, gap and seal profile. Always check the product specifications before ordering.