Teflon Bag, Septum Valve (50L) Back Catalog number: TE-28 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9913-01 Challenger O-Ring Replacement Kit Price on request 400165 Impinger, Standard Midget (25ml) Price on request 800783-3 Diagnostic Panel with Stand, Hi/Lo (2-50cc, 20-200cc, 0.5-5LPM) Price on request