Made in the UK
British-manufactured seals built to perform
Find the right seal for your application
Search by SKU code or category to find the right seal for your application.
Why specify Schlegel weatherseals
Schlegel products span every mainstream sealing technology: Q-LON polyurethane foam, woven and extruded brush pile, and Lozaron TPE/silicone extrusions. Each product is classified under EN 12365 with independently verified data covering working range, compression force, temperature range, deflection recovery and recovery after ageing, so fabricators and specifiers can match the right seal to the right performance requirement first time.
Key Benefits
EN 12365:2003 certified
delivering industry-leading airtightness, watertightness and thermal insulation.
10-year guarantee
Backed by a 10-year guarantee for long-term confidence in performance.
Built to last
Long-term durability and resistance to harsh weather, with no shrinking or warping over time.
Excellent acoustic performance
High compression ability delivers exceptional sound insulation, reducing external noise transfer.
Superior UV performance
UV-stable, chemically inert materials resist prolonged UV exposure without degrading.
Wide range choice
Available in kerf, surface-mount and self-adhesive fitment options, suiting new-build and retrofit projects.
Optimised for sliding applications
Low closing/breakaway force designed specifically for sliding applications such as patio doors and sliding sash windows.
- Colours
- Range Overview
- Downloads
Standard and non-standard colour options across the range
Brush pile seals are available in standard colours including White, Brown, Grey and Black. Non-standard multifilament yarn options include Ivory, Iron Grey, Dark Beige and Sepia Brown. Q-LON foam seals carry a weather-resistant polyethylene liner available across a wide colour range to match timber, aluminium and uPVC frame finishes.
Standard
White - Standard RAL 9003
Silver - Standard RAL 7001
Brown - Standard RAL 8019
Black - Standard RAL 9005
Beige - Extra RAL 1001
Light Grey - Extra RAL 7035
Fawn Brown - Extra RAL 8007
Graphite Grey - Extra RAL 7024
Light Oak - Extra RAL 8003
Pebble Grey - Extra RAL 7032
Pure White - Extra RAL 9010
Seal selection by application: windows, doors and shutters
The table below maps each Schlegel product range to its recommended application, frame material and fitment method. Use it alongside the full performance data in the downloadable brochure.
| Product | Technology | Primary Application | Frame Material | Fitment |
|---|---|---|---|---|
| Q-LON | PU foam / PE liner | Casement and tilt-and-turn windows, entry doors | Timber, aluminium, uPVC | Kerf, surface, self-adhesive |
| Q-LON Fire Retardant | PU foam / PE liner, EN 13501-1 Class E | Fire-rated doors and windows | Timber, aluminium, uPVC | Kerf, surface |
| Nova-Seal | PP/TPE co-extrusion + closed-cell PU foam | Dry-glazing, frame, sash and glazing seals | Timber (3 mm groove) | Kerf |
| Poly-Bond (PB) | Woven brush pile, PP | Sliding sash windows, sliding doors | Aluminium, uPVC, timber | Kerf, box carrier |
| Fin-Seal (FS) | Woven brush pile + fin, PP | Sliding windows and doors, high air-tightness | Aluminium, uPVC, timber | Kerf, box carrier |
| Power-Pile (PW) | Extruded brush pile, PP | Sliding windows and doors | Aluminium, uPVC | Kerf, box carrier |
| Fin-Pile (FP) | Extruded brush pile + fin, PP | Sliding windows, ventilation grilles | Aluminium, uPVC | Kerf |
| G3 | Extruded brush pile, PP | Sliding doors and windows | Aluminium, uPVC | Kerf, box carrier |
| G3-QF Quadrafin | Extruded brush pile + 4 fins, PP | High air-tightness sliding applications | Aluminium, uPVC | Kerf |
| Bi-Fin (BF) | Extruded brush pile + 2 fins, PP | Sliding patio doors, sliding windows | Aluminium, uPVC | Box carrier |
| Bi-Fin (BF) | Extruded brush pile + 2 fins, PP | Sliding patio doors, sliding windows | Aluminium, uPVC | Box carrier |
| Lozaron | TPE, foamed TPE, PP or silicone extrusion | Compression seals, internal applications, sun protection | Timber, aluminium, uPVC | Kerf, surface |
| Foam-Tite | TPV extruded foam (bulb, hollow, leaf) | PVC and aluminium frame compression sealing | uPVC, aluminium | Co-extruded / inserted |
Browse Downloads
Browse and download Schlegel product brochures, technical data sheets, EN 12365 classification tables and installation guides. Datasheets include dimensional tolerances, deflection recovery grades, compression force data and thermal conductivity values to EN ISO 10077-1.
Our seal ranges: Q-LON, brush pile and extruded
Q-LON is Schlegel's polyurethane foam gasket, made with a special foam core and weather-resistant polyethylene liner, available for timber, aluminium and uPVC frames. Q-LON Fire Retardant profiles are classified to EN 13501-1 Class E. Brush pile seals, made from polypropylene with optional silicone treatment, seal against moving elements and uneven surfaces. The extruded seal range combines TPE, foamed TPE, polypropylene and silicone profiles for fenestration, window covering and industrial applications.
EN 12365 classified across the full range
Every Schlegel seal carries a published six-digit EN 12365 classification covering working range, compression force, temperature range, deflection recovery and recovery after ageing, giving specifiers verified data to meet CE marking requirements.
Three sealing technologies, one supplier
Q-LON foam, polypropylene brush pile and extruded TPE/silicone profiles are all designed and manufactured within the Schlegel group, so fabricators source compression seals, sliding seals and gaskets from a single accredited manufacturer.
Dedicated products for all fenestration frame materials
Separate product lines cover timber, aluminium and uPVC frames. Each is engineered for the specific groove dimensions, surface finishes and performance demands of that material type, rather than adapted from a generic profile.
Fire-rated sealing without compromising weather performance
Q-LON Fire Retardant maintains the deflection recovery and air-sealing properties of the standard Q-LON range while achieving EN 13501-1 Class E classification, meeting the requirements of both building regulations and window energy performance standards.
Technical support for specification and selection
Schlegel's technical team supports product designers, fabricators and installers with seal selection guidance, EN 12365 classification data and thermal conductivity values to EN ISO 10077-1 for inclusion in window energy calculations.
Q-LON polyurethane foam seals
Q-LON is Schlegel’s polyurethane foam weatherseal with a weather-resistant polyethylene liner for long-lasting performance. Designed for timber, aluminium and uPVC windows and doors, it is available in kerf-fit, surface-fit and self-adhesive options. Q-LON recovers after compression in extreme temperatures. Q-LON FR meets EN 13501-1 Class E, while all seals offer a minimum 10-year lifespan and can be painted or stained.
Brush pile seals: woven and extruded formats
Schlegel’s brush pile seals include woven and extruded options for a wide range of sliding applications. Manufactured from UV-stable homopolymer polypropylene, they deliver reliable long-term performance. Woven seals feature fabric backings, while extruded versions use polypropylene or PVC-u carriers. Silicone-treated options resist water, mould and mildew, with fin configurations available to improve air-tightness where required.
Extruded seals: Lozaron, Nova-Seal and Foam-Tite
Schlegel’s Lozaron sealing range includes TPE, foamed TPE, polypropylene and silicone profiles for timber, uPVC and aluminium systems. Selected profiles combine Poly-Bond brush pile or Q-LON foam within a single carrier. The range also includes Nova-Seal for timber glazing applications and Foam-Tite compression seals in multiple profiles for dependable weather protection across modern frame systems.
Related Products
Q-LON Seals
- Polyurethane foam core with polyethylene liner
- Tested to perform after 10,000 opening/closing cycles
- Thermal conductivity of 0.04 W/m·K at 0°C
Find Out More
Brush Pile Seals
- UV stable and chemically inert for lasting performance
- Woven and extruded base options
- Backed by a 10-year guarantee
Find Out More
Extruded Seals
- TPE, EPDM and polypropylene profiles
- Rigid extrusions and combination seals available
- Certified to BS EN 12365
Find Out More
Latest News
Keep up to date with Schlegel news and product updates.
Find out about our latest product launches, technical updates and industry news from Schlegel and the wider Quanex group.
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Technical information, brochures and product data sheets
Access the full Schlegel technical library including product data sheets for Q-LON, brush pile and extruded seals, downloadable brochures covering EN 12365 compliance, and installation guides for timber, aluminium and uPVC applications. All documents are available to download free of charge.