Check the listing for details. Brownies Third Lung Compressor Cup Seal Only Replacement Rebuild Service Kit. Condition: New. Listed at 97.99 USD. NEW Compressor Pump Rebuild Kit ( Cup Seal Replacement only ) 1905 Service KitFits All Brownie Third Lung Gas Compressors.Includes 1 Cup seal Replacement ONLY. These came in white, black, and tan colors. The black color is the newest upgraded seal that will outlast the previous one.Does not include any other parts or accessories. Does not include the compressor, gaskets, screws, etc. We have the whole kit available in our store. The cup seal is typically the only wear part requiring replacement. Save Money by only replacing what is needed. After rebuilding these will normally last up to 3,000 - 5,000 hours before the cup seal needs to be replaced again!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 Pumps in stock - ready to ship - Warranted, Guaranteed - check out our store!Thousands of kits available - Thousands of Pumps available!