Nitoseal MS400 - Your go-to sealant for trafficable joints

Regulators around the world are introducing stricter regulations regarding the use of products containing isocyanate.

In Australia and New Zealand, Fosroc ANZ is spearheading the push for safer isocyanate-free sealants with our Nitoseal MS hybrid range.

Comprising two products, Nitoseal MS250 and Nitoseal MS400, Nitoseal MS hybrid sealants use state-of-the-art Duraflex technology which provides the weathering and adhesion performance of silicone sealants, with the strength and toughness of polyurethanes – without the isocyanates.

A safer alternative

According to Fosroc ANZ’s sealant specialist, Martin Venn, Nitoseal MS hyrid products are the perfect alternative for applicators and specifiers who wish to avoid isocyanates.

"The Nitoseal MS hybrid range offers enhanced safety, without compromising on performance," he explains.

"Given their advantages in terms of performance, usability and safety, I can see the Nitoseal MS products becoming the new sealant of choice," he says.

Where is Nitoseal MS400 used?

Nitoseal MS400 is a high strength, UV resistant, elastomeric joint sealant for trafficable and general construction joints.

Typical applications for Nitoseal MS400 include:

• Sealing moving or static joints in applications where high strength and abrasion resistance is required
• Precast and insitu concrete, curtain walls, lightweight cladding, tilt-up slabs, brick and blockwork.

The health risk of isocyanates

Isocyanates are a group of highly reactive organic compounds commonly found in materials such as polyurethane foams, synthetic rubbers, paints, varnishes and sealants. These compounds easily become volatile and enter the atmosphere as a vapour.

Exposure to isocyanates can cause coughing, wheezing and shortness of breath, as well as nausea, vomiting, and headaches. Direct contact with the skin or eyes can result in conjunctivitis, blistering, and irritation, while prolonged exposure can cause chronic disease or cancer.

Benefits beyond your health

Australian made, Fosroc Nitoseal MS400 brings together the best of polyurethanes and silicones for a safer, better performing product.

In addition to being isocyanate-free, Nitoseal MS400:

• Is easy to gun out even at low temperatures
• Can tolerate joint movement of up to 40%
• Has outstanding weathering and UV resistance to maintain colour and integrity
• Delivers excellent primerless adhesion to concrete, timber, masonry, aluminium, metal and ceramics
• Will not stain masonry surfaces
• Provides blister-free curing in high humidity or on SSD (Saturated Surface Dry) surfaces
• Has very low VOC, with approximately 15 grams per litre.

Unrivalled colour options

While both Nitoseal MS products are paintable, for projects where specifiers don't want surfaces painted Fosroc ANZ offers colour choice and colour matching.

Nitoseal MS400 is available in black, white and concrete grey, with custom colour matching available for orders of 120 units or more, with a lead time of 14-21 days from colour approval.

Choose the right sealant for your job

Looking for a safer general construction sealant?  Take a look at Nitoseal MS250.

Not sure what sealant is best? Use Fosroc ANZ’s step-by-step Product Selector.

Explore the full product range in our Sealant Solutions brochure.

Find your nearest Fosroc ANZ stockist.

Contact our customer service using our 'Get in Touch' form at the bottom of this page or phone or email our customer service team.