Flaretite Seals Combo Kit - 9 seals each of sizes 1/4",3/8", 1/2" & 5/8" (36 seals total). Flaretite refrigeration and gas seals. 45 degree copper stamping with loctite coating. Locking tabs clip seal securely on fitting. Conical rings for multiple points of contact. Rated for -40 degree F to 300 degree F. Pressure rated up to 10,000 psi.