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Siroflex Polyurethane Sealant and Trim Adhesive

Availability: In stock

Incl. VAT: £6.71 ex VAT £5.59

Quick Overview

A one component, moisture curing, paintable, high modulus polyurethane sealant and adhesive. It has excellent adhesion to most building substrates and is fast curing with permanent and durable elasticity.



SiroFlex is Ideal for bonding GRP trims but can also be used for interior and exterior waterproof joints in building and metal constructions. For gluing, sealing, mounting and anchoring in building applications. For use in metal and mechanical construction, ship building and container sealing joints, refrigeration plants, automotive, caravan, mobile home, aircraft and the railway industry.

Directions of Use

Cut the cartridge seal and screw on the nozzle, which should be cut to your required size. Using a skeleton gun, apply the sealant firmly into the gap or joint ensuring a good solid fill. If required place masking tape along edges, removing within 10 minutes of application.


• Not suitable for PE, PP, PTFE, neoprene and bituminous surfaces
• Not suitable for continuous water immersion
• Avoid exposure to high levels of chlorine
• Avoid contact with alcohol and other solvent cleaners during cure
• Do not use in the presence of curing silicone sealants
• Sealant may bubble if applied in a high moisture vapour environment.

Surface Preparations and Finishing

Surfaces must be clean, dry and free from dust, grease and other loose material. Priming is not usually necessary. 

Additional Information

SKU Siroflex HM Sealant
Weight (kg) 0.3100
Brand Name Siroflex
Color Grey
Delivery Lead Time 1 Working Day