*.Part No. 20491, 24 degree Cone o-ring seal L. T, forged steel. *.Available ... drawing and samples (OEM)*. Surface Treatment: zinc plated, nickel plated, chrome plated, hot-dip galvanized etc.. Specification : E HOSE BORE DIMENSIONS ... spiral hoses, hose fitting series number is 20492-xx-xxT; 24 Cone o-ring seal L. T