HomeHPLC Replacement PartsPiston Seals, Seal Wash System, 2/pkPiston Seals, Seal Wash System, 2/pk Piston Seals, Seal Wash System, 2/pk Add to quote This product is already in your quote request list. Browse the list Description Description Reference WB338 OEM Part 6040,0033 Models: ISO-3100SD, ISO-3100BM, HPG-3200SD, HPG-3200RS, HPG-3400SD, HPG-3400RS, LPG-3400SD, LPG-3400RS, LPG-3400XRS, DGP-3600SD, DGP-3600RS, VC-P10, VC-P20, VC-P32, and VC-P40