The Uflex Brass Plug with O-Ring, part number 71928P, is a component designed for use with pumps, specifically within compensating lines of UP series helms. This brass plug features a 1/4 NPT thread, making it suitable for applications requiring this specific connection size on the helm side. Its primary function is to seal a 1/4 NPT port, preventing leaks and maintaining system integrity in compatible pump and helm setups. This product is intended for IT and maintenance professionals managing or servicing hydraulic steering systems that utilize Uflex UP series helms and require a reliable brass plug for their compensating lines.