Tube gas sampling 350, nozzle (GL14), septum Back Catalog number: OST-201-3421 Availability: In the manufacturer's stock Price on request - + Recommended M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request 1233 BALLOONS FOR GAS SAMPLING, 4Liters Price on request 1970-0007 O-RING-007 .145 ID x .070 W for LFS-113 (5 Required ) Each Price on request