"V" packing for use in pumps and compressors in chemical service, rod packing for use in pumps and compressors in chemical service, "O" rings for use in pumps and compressors in chemical service, compressor rings for use in pumps and compressors in chemical service, wear rings for use in pumps and compressors in chemical service, piston cups for use in pumps and compressors in chemical service, Piston rings for use in pumps and compressors in chemical service