F & H Shower Seals

Stop side leaks and door-to-door gaps for good. Whether you are sealing a sliding door overlapping (F-Shape) or bridging the gap between two glass panels (H-Shape), SIMBA UK provides the precision-fit solution.

Our reinforced profiles are engineered for 180° straight-line protection in 4mm to 12mm toughened glass. As a direct manufacturer, SIMBA UK provides trade-quality seals at factory prices—every profile is 30,000 cycle-tested for long-term durability.

how to measure shower screen seal

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23 products

H Shape Seal 4-6mm Glass Gap 3-6mm H456S8

H Shape Seal 4-6mm Glass Gap 3-6mm H456S8

£29.99
£35.99 £29.99
4-6mm Glass H Shape Seal Gap 3-13mm H456S15

4-6mm Glass H Shape Seal Gap 3-13mm H456S15

£29.99
£35.99 £29.99
H Shape Seal 4-6mm Glass H456S20

H Shape Seal 4-6mm Glass H456S20

From £3.48
£7.19 From £3.48
2 Metre Vertical H-Type Seal 4-6mm Glass H456S2025

2 Metre Vertical H-Type Seal 4-6mm Glass H456S2025

£29.99
£35.99 £29.99
Rubber Seal For Simpsons Design Double Bath Screen 4-6mm Glass HH456

Rubber Seal For Simpsons Design Double Bath Screen 4-6mm Glass HH456

£29.99
£35.99 £29.99
8mm Glass Premium H-Profile Vertical Seal HH08

8mm Glass Premium H-Profile Vertical Seal HH08

£29.99
£35.99 £29.99
10mm Heavy-Glass Hybrid H-Seal (Out-Swing) HH10

10mm Heavy-Glass Hybrid H-Seal (Out-Swing) HH10

£29.99
£35.99 £29.99
F Shape Shower Door Seal | 8mm Slim Fin | Fits 4mm, 5mm & 6mm Glass F456S8

F Shape Shower Door Seal | 8mm Slim Fin | Fits 4mm, 5mm & 6mm Glass F456S8

£32.70
£35.99 £32.70
F Shape Shower Door Seal | 12mm Standard Fin | Fits 4mm, 5mm & 6mm Glass F456S12

F Shape Shower Door Seal | 12mm Standard Fin | Fits 4mm, 5mm & 6mm Glass F456S12

£32.70
£35.99 £32.70
F Shape Shower Door Seal | 15mm 'Extended' Fin | Fits 4mm, 5mm & 6mm Glass F456S15

F Shape Shower Door Seal | 15mm 'Extended' Fin | Fits 4mm, 5mm & 6mm Glass F456S15

£32.70
£35.99 £32.70
F Shape Shower Door Seal | 20mm Mid-Range Fin | Fits 4mm, 5mm & 6mm Glass F456S20

F Shape Shower Door Seal | 20mm Mid-Range Fin | Fits 4mm, 5mm & 6mm Glass F456S20

£32.70
£35.99 £32.70
F Shape Shower Door Seal | 35mm Extra-Long Fin | Fits 4mm, 5mm & 6mm Glass F456S2535

F Shape Shower Door Seal | 35mm Extra-Long Fin | Fits 4mm, 5mm & 6mm Glass F456S2535

£32.70
£35.99 £32.70
Sliding Door F-Shape Seal FD456S1015

Sliding Door F-Shape Seal FD456S1015

£32.70
£35.99 £32.70
F-Type Sliding Screen Seal FD456S2025

F-Type Sliding Screen Seal FD456S2025

£32.70
£35.99 £32.70
H-Type Side Seal Strip 8-10mm Glass H810S8

H-Type Side Seal Strip 8-10mm Glass H810S8

£29.99
£35.99 £29.99
Replacement H-Profile Glass Seal H810S15

Replacement H-Profile Glass Seal H810S15

£29.99
£35.99 £29.99
8-10mm H-Type Shower Door Seal H810S20

8-10mm H-Type Shower Door Seal H810S20

£29.99
£35.99 £29.99
Standard h-Shape Shower Screen Seal 8-10mm Glass H810S2535

Standard h-Shape Shower Screen Seal 8-10mm Glass H810S2535

£29.99
£35.99 £29.99
F Shape Shower Door Seal | 8mm 'Discreet' Slim Fin | Fits 8mm-10mm Glass F810S8

F Shape Shower Door Seal | 8mm 'Discreet' Slim Fin | Fits 8mm-10mm Glass F810S8

£32.70
£35.99 £32.70
Replacement F-Shaped Seals for Sliding Shower Enclosures 8-10mm Glass F810S12

Replacement F-Shaped Seals for Sliding Shower Enclosures 8-10mm Glass F810S12

£32.70
£35.99 £32.70
F Shape Shower Door Seal 8-10mm Glass Gap 18-28mm F810S15

Standard 15mm Fin F-Type Shower Seal For 8mm-10mm Glass F810S15

£32.70
£35.99 £32.70
F Shape Shower Door Seal 20mm Mid-Range Fin For 8mm-10mm Glass F810S20

F Shape Shower Door Seal 20mm Mid-Range Fin For 8mm-10mm Glass F810S20

£32.70
£35.99 £32.70
Extra Wide F-Shape Seal for 8mm-10mm Glass (35mm Fin) F810S2535

Extra Wide F-Shape Seal for 8mm-10mm Glass (35mm Fin) F810S2535

£32.70
£35.99 £32.70

F-Shape: The Sliding Door Specialist

The F-Shape seal is the industry standard for sliding shower doors, specifically designed to fit the vertical edge where one glass panel overlaps another. Unlike simple friction seals, the F-profile creates a watertight barrier that allows the door to glide smoothly without catching.

A worn or loose F-seal is the number one cause of "phantom leaks" in UK bathrooms.

Sliding Shower Door Seal Selection Guide

H-Shape Seals: The "Double-Sided" Solution

While F-Shapes are perfect for overlapping glass, the H-Shape profile is the standard choice for connecting two fixed panels or creating a door-to-wall seal. Confused by the profiles? Don't guess—get it right the first time.

Learn More Ultimate Guide to Vertical Seals

Your F / H Shape Shower Seal Questions Answered

1. Do you offer F-Shape shower seals in 2m or 3m lengths? +

We provide standard 2 metre (2000mm) lengths, suitable for the vast majority of UK sliding shower doors. For commercial projects or exceptionally tall shower screens, we also offer custom 3 metre lengths to ensure seamless waterproofing without unsightly joints.

Pro tip: Measure your glass height before ordering – most UK standard shower doors are 1950-2000mm tall.
2. Is your F-Shape seal compatible with 8mm or 10mm glass thickness? +

Our F-Shape range is specifically engineered for various tempered glass thicknesses used across British bathrooms:

  • Standard shower enclosures: Select F shape shower door seal 8mm or 10mm via our left-hand filter
  • Slim-frame designs: We also supply 4mm, 5mm, and 6mm variants for contemporary frameless glass
3. Can I cut the 2m seal to a shorter length? Is installation difficult? +

Absolutely – our PVC seals are designed for DIY installation with no specialist tools required:

Cutting guide: Use a sharp garden scissors to trim your 2m seal to any required length (1.5m, 1.8m, etc.)

Installation steps:
  1. Clean glass surface thoroughly
  2. Start by securing one corner
  3. Firmly press the remaining seal into place along the glass edge

No adhesive needed – the seal's flexible design creates a secure, watertight fit.

4. Can this seal replace my old B&Q or Aqualux shower door seal? +

Yes, provided the dimensions match – compatibility depends on glass thickness and seal profile, not brand:

UK brand compatibility: Works with B&Q, Wickes, Aqualux, Homebase and other major British shower systems.

5. What's the difference between F-Shape and H-Shape seals? +

F-Section and H-Section serve distinct purposes in UK shower installations:

F-Shape (F-Section):

Used on sliding door edges where glass overlaps fixed panels. Features a single gripping channel with a water-directing lip. Ideal for Side seals on sliding shower doors.

H-Shape (H-Section):

Used for straight-line seals between two glass panels. Ideal for Door-to-door seals or glass-to-wall connections.

6. Why does my old F-Shape seal turn yellow and fall off? +

This is a common issue in UK households due to our unique environmental factors:

Primary causes: Hard water deposits (high-mineral), Cleaning product exposure, and UV degradation.

Our solution:
  • Anti-UV reinforced PVC: Specifically formulated for British conditions.
  • Memory retention technology: Maintains flexibility for 3x longer than standard seals.
  • Proven performance: Lab-tested against UK hard water and common cleaning agents.