... : 1, pure polyester flame retardant lines 2, Cotton/acrylic flame retardant sewing thread3, Aramid flame retardant sewing threadspecifications are ... fire, 300°c high temperature resistance, and the permanent flame retardant. Applies to: fire, welding, fire sewing ... blankets, canvas, PVC tape, leather products , clothing, handbags, shoe, wallets, travel bags, leather gloves, tents, seat covers, luggage ...