Devex Gas sampling bags 10L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: HEDDEV71_10L Availability: In the manufacturer's stock Price on request - + Recommended U-COV108-H O-ring, Injector Liner, Black, High Temp, pk/1 Price on request M-TCN04 O-Ring, size 007, and spacer,pk 6 Price on request M-MCAL20 Disposable dish, alum, 20mL,pk100 Price on request