DURAK Fire Safe P-Aramid WR is a flame retardant and water repellent thread made from 100% staple Para Aramid raw materials. It withstands heat up to 5OOC. Its special finish has a high degree of water resistance. It is therefore the correct choice for outdoor products, shoes and related items. A PFC-free water repellent finish ensures that it does not take up water. The correct thread tension prevents water entering the stitching holes.