Tube Holder O-Ring Kit Back Catalog number: 800238 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800138 Tube Holder Adapter for 5/8" Ends Price on request 800149 Single Tube Holder Kit, 6 x 70mm (Standard Charcoa Price on request 811-9985-50 Sorbent Tube, Florisil, 6X70, 100/50, 50/BX Price on request