O-Ring, Size 006, pk/10 Back Catalog number: U-COV06 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In stock 2 pcs Price on request - + Recommended U-T6SUL-2S Sulphur/labile cold trap, Price on request C-TAGKT TubeTAG starter kit (for SS tubes) Price on request M-CHCT-250 Calibration tool for M-CTE250I, pk 4 Price on request