O-Rings, 23mm × 3mm i.d.,pk 20 Back Catalog number: P-CP020 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended U-T17O3P-2S Ozone precursors cold trap, UNITY 2/xr and TD-100/ Price on request U-T7EMP-2S Empty cold trap for UNITY series 2 Price on request T-9GPC General purpose carbon cold trap, TT24-7 Price on request