Fosroc Nitoseal PU400

Fosroc Nitoseal PU400 is a one-part, medium-modulus polyurethane sealant/adhesive that cures to a tough, waterproof elastomer—delivering long-lasting joint sealing and high-strength bonding on concrete, masonry, metal, and timber. Certified to AS 4020:2018, it is suitable for applications where incidental potable-water contact may occur.

Features + Benefits:

Waterproof & Weather-Tight: Cures to an elastic skin that repels water and withstands UV, rain, and temperature extremes.
Medium Modulus Flexibility: Accommodates joint movement while resisting tearing and deformation.
High Bond & Abrasion Resistance: Forms a durable attachment to most construction substrates and stands up to traffic, impact, and cleaning.
One-Component Convenience: Supplied ready to gun—no on-site mixing, reducing waste and application errors.
AS 4020:2018 Compliant: Safe for use where the sealed surface may contact drinking water.

Product Uses:

Sealing expansion and control joints in precast panels, tilt-up walls, façades, and cladding systems;
Bonding and sealing metal flashings, window/door frames, and roofing elements;
Filling pavement or floor joints exposed to pedestrian or light vehicular traffic;
General adhesive for bonding disparate materials (concrete, steel, timber, plastics) in exterior construction.

Pack Size:

Available in 600 mL foil sausages and 400 mL cartridges; larger 20 L pails supplied to order for bulk applications.