Tube Holder O-Ring Kit Back Catalog number: 800238 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9974-50 Sorbent Tube, XAD-2, 8X110, 150/75, 50/BX Price on request 800229 Tube holder plug for manifold Price on request 200486 Tube Holder Tubing, 1/4" ID x 1/16" W (10 ft) Price on request