SEAL 'N' FLEX® 1
One Component, Class-A Polyurethane Sealant
Bostik Fireban® One is a fire rated intumescent, low modulus, one component, and Class A polyurethane sealant. When cured it will form a tough, flexible fire rated seal capable of cyclic expansion and compression movement of 50% (±25%) of the original installed joint width.
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