Tube Holder O-Ring Kit Back Catalog number: 800238 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200157 U-Tube replacement for P/N 800143 Price on request 200131 Impinger Holder, Double, Aluminum, GilAir/HFS Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request