O-RING-234 For High Flow Damper Plate Back Catalog number: 1970-0234 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended OST-201-0246 Screw caps for screwthread tubes GL14, bore 8mm Price on request OST-201-3424 Tube gas sampling 150ml nozzle (GL14), septum Price on request U-T20PAM-2S Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for UNITY-xr, TD100-xr, Centri Price on request