Nephelometer O-Ring, Replacement Back Catalog number: 385-0115-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0920-01 Replacement Valve Caps (Pack of 2) Price on request 811-9927-02 Cyclone, BGI4L O-Ring Kit & Gasket Kit Price on request 811-9927-09 Cyclone, Luer Adapter Replacement Kit Price on request