HomeHPLC - Mass SpecWB456WB456 WB456 Add to quote This product is already in your quote request list. Browse the list Description Description WB Scientific Part WB456 OEM Part 017809 Models 4000, 5000, 4500, 5500, 6500 Description: O-ring, Vitonâ„¢ (5.13 ID X 1.77W)