Shurflo 244-2866 RV Plumbing Coupler – 1/2″ NPSM to 1/2″ NPSMThis is a Shurflo OEM 1/2″ NPSM female to female coupling.These proprietary Shurflo fittings provide secure connections to the 1/2″ NPSM male ports on Shurflo pumps, accumulators, and other products.Made to compress internally, this fitting does not use a compression gasket like traditional fittings. Constructed of durable nylon.The sizes listed do not correspond with their actual sizes. They represent the nominal size of the plumbing component they will accommodate.WARNING: This product may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit wwwP65Warnings.ca.gov