supply of poh kit for cut off angle cock [consisting of 3 items] to drg. n0. wd-88123-s-02, alt-6 or latest, item no. 5, 6 and 7 [1] 0ring - item-5, qty-1 nos. [2] o ring - item-6,qty-2 nos [3] seat - item-7, qty-2 nos. material and specification as per drawing. thisitem is reserved for procurement from rdso approved sources only.