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-T10CW-2S Chemical Warfare agents cold trap Price on request U-T6SUL-2S Sulphur/labile cold trap, Price on request C-POD-KIT01-TNXTA POD Starter kit: Tenax TA Price on request