Cyclone, BGI4L O-Ring Kit & Gasket Kit Back Catalog number: 811-9927-02 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1004-01 PM-2.5 Impactor Kit, Replacement for Models 810-1002 and 810-1003 Price on request 850082 PC Cable, Flow Monitoring Software Kit (cable only), Gilibrator-2 Price on request 811-0911-EU-R Three Station Basic Dock 100-240Vac, 50-60 Hz, Euro Cord. (incl Pwr Supply) Price on request