Our shutdown for the Christmas period will be between 23nd December – 3rd January. Any orders placed during this period will be processed and shipped on the 4th January for delivery on 5th – 6th Jan 2023.

Our shutdown for the Christmas period will be between 23nd December – 3rd January. Any orders placed during this period will be processed and shipped on the 4th January for delivery on 5th – 6th Jan 2023.

Economy shipping £4.98, Express £9.95

Include/Exclude VAT

Adflex Polyurethane 300ml

£6.18£5.15 Incl. VATExcl. VAT

Adflex Polyurethane Sealant 300ml – A High Quality Non-Sag One Part Sealant

SKU: 378-1 Categories: , ,

Description

Adflex – High-Performance One-Part Polyurethane Sealant & Adhesive

Adflex is a premium, non-sag polyurethane sealant/adhesive designed for demanding bonding and sealing jobs.
Moisture-curing to form a tough, elastic joint, Adflex has been trusted by professionals for years thanks to its excellent adhesion, durability and versatility.

Key Benefits

  • One-Part, Ready to Use – No mixing required, cures on contact with air moisture

  • Strong & Flexible Bond – Maintains permanent elasticity with >700% elongation at break

  • Excellent Adhesion – Bonds to timber, metals, coated metals, ceramics, and many plastics

  • Weather & Age Resistant – Withstands sunlight, rain, and temperature fluctuations

  • Low Odour & Non-Corrosive – Safer and easier to work with than many alternatives

  • Overpaintable & Sandable – Allows a smooth, professional finish

Typical Applications

  • Elastic sealing of expansion and connection joints

  • Bonding panels, trims, or decorative elements

  • General construction, automotive, marine and industrial repairs

  • Sealing around windows, doors, or metal cladding

Technical Highlights

Property Value
Chemical base One-component polyurethane
Colours White, Grey, Black, Brown
Density (uncured) 1.15–1.17 kg/l
Tack-free time ~20 minutes
Cure rate 4 mm per 24 h (23 °C / 50 % RH)
Shore A hardness ~50
Tensile strength 2.4 N/mm²
Elongation at break >700 %
Service temperature –30 °C to +80 °C
Shelf life 12 months (below 25 °C)

Chemical Resistance

  • Resistant to: fresh water, seawater, diluted acids & alkalis, sewage effluent

  • Temporary resistance to: fuels, mineral oils, animal & vegetable fats/oils

  • Not recommended for: organic acids, alcohol, concentrated acids/alkalis or solvents

Application Advice

Ensure surfaces are clean, dry and free of grease or dust. Use a suitable gun for application, and tool within the tack-free time for the best finish. Once cured, Adflex can be sanded or painted (test compatibility first).


💡 Available packaging:

  • 300 ml cartridges

  • 600 ml foil packs

  • 200 L drums (on request)

Why Choose Adflex Over Other Sealants?

  • Exceptional Strength & Flexibility
    Adflex combines high tensile strength (2.4 N/mm²) with >700 % elongation — giving a durable yet flexible seal other general-purpose sealants can’t match.

  • One-Part, Ready to Use
    No mixing or special primers needed on most substrates, saving you time on site.

  • Superior Adhesion
    Bonds to timber, metals, coated metals, ceramics, and many plastics — where other sealants may struggle.

  • Weather & Age Resistance
    Performs reliably in sunlight, rain, and temperature changes from –30 °C to +80 °C, ensuring long-term protection.

  • Overpaintable & Sandable
    Unlike most silicones, Adflex can be sanded smooth and painted for a seamless finish.

  • Low Odour & Non-Corrosive
    Safer and more pleasant to work with than acidic or solvent-heavy sealants.

  • Proven Track Record
    Tried and tested in construction, automotive, and industrial applications — Adflex has been trusted by professionals for years.

Adflex isn’t just another sealant — it’s a high-performance polyurethane adhesive/sealant designed to handle demanding jobs where longevity, flexibility, and strength are essential.

Additional information

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