Check the listing for details. Thomas Silicone Head Gasket Replacement Part # SK623143-B. Fits Models 2660 2650. Condition: New. Listed at 29.85 USD. NEW Replacement Top Head gaskets FOR Thomas Compressor / Vacuum Pumps.Fits All 2660, 2650, 2685 Model Thomas CompressorsIncludes 2 head gaskets ONLY. Does not include any other parts or pieces..All items ship same day or day after w/ tracking # uploaded ( except weekends and holidays )We are a business and closed Weekends.We have NEW GAST and THOMAS Pumps in stock - ready to ship - Warranted, Guaranteed - check out our store!WE stock ALL rebuild kits for pretty much the entire line of Thomas and GAST Compressors --- IF you have one needing a rebuild and cannot find a kit just ask us - chances are its in stock! or we can rebuild it for you. We have kits for the Thomas 100, 2619, 2639, 2669, 2650, 2660, 2685, 2680, 2750, 1207, 405, 617, 668, 669, 927, 2807, T models (617, T-27,30, 30A, 25HD, T-50, T150, T-100/200, T2820, GAST (most models), etc.WE have spare parts - fan blades, bearings, piston rods, plates, caps, screws, flappers, restrainers, gaskets, motor mounts, filters, silencers, hose clamps, tubing.... and many more!Thousands of kits available Return policy: Returns will be excepted ONLY if item is returned unopened and unused! Please know what you are buying and that it is the right size, model number, kit, etc. If you have any questions about the item, please email us and ask before purchasing. Return shipping paid for by buyer unless other arrangements are made. Thank You