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 T-11OP Ozone precursors trap, TT24-7 Price on request NDV32_5L New DEVEX gas sampling bags with PTFE dual-valve, 5L Price on request U-COV1516 Spare O-ring, black, for POD sampler (support body), pk 10 Price on request