Ace/Valvtec Ball Valves - Replacement Parts Details Repair Kit for Series 16 - 2" Valves Kit includes: Seat (Teflon) - Item # 4 in Image Seat O-Ring (Buna-N) - Item # 5 in Image Packing Stem (Teflon) - Item # 8 in Image Thrust Washer (Teflon) - Item # 9 in...