If you gun is leaking where the needle enters the air cap section, this is most likely the culprit. Solvents get in and attack the seal. Fits LS400, LPH400, LPH300, LHP200, WS400, W400, and a few more.
Iwata Needle Cartridge Packing for LPH80 93940890
Anest Iwata Needle Cartridge Packing 93810620 KIWAMI4 WIDER4 WS-400 LPH-400
Anest Iwata 93765610 WIDER/KIWAMI Needle Ben PK Set Cartridge Packing
Iwata 93765610 Century Spray Gun Cartridge Packing Fits LS400 WS400 W400
2 Sets Rebuild Kit For LPH400 LPH200 W400 Spray Guns Cartridge Packing Assembly
#5650 Rebuild Kit For W400, LPH400,&LPH200 Spray Guns Cartridge Packing Assembly
