Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: HEDDEV71_5L Availability: In the manufacturer's stock Price on request - + Recommended U-COV108-L O-ring, Injector Liner, Brown, Low Temp, pk 10 Price on request M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request P-00001 VOC-Mole assembly, 230mm,pk 1 Price on request