Soudafoam FR HY Gun is a one-component, moisture-curing, self-expanding, ready to use polyurethane foam. The canister is provided with a thread so it can be used on a gun. Soudafoam FR HY Gun is fire resistant according to EN 1366-4. Because of the Duravalve, the optimal yield remains over the entire shelf life, even when stored or transported lying down.