Check the listing for details. Captain O-Ring Replacement P6119 O-Ring for Bestway Flowclear Pump Filter Cap.... Color: Black, Condition: New. Listed at 15.19 USD. Captain O-Ring Replacement P6119 O-Ring for Bestway Flowclear Pump Filter Cap... Product Features: Replacement P6119 o-rings for Bestway Flowclear Filter Pumps (Filter Cap Cover). Compatible with pump model numbers: 58117, 58118, 58122, 58123, 58148, 58149, 58383, 58384, 58386, 58389, 58122GS, 58388E, 58389GS, 58390E. Check your filter model numbers on the side of the filter to confirm it matches one of the compatible models. (2 Pack) Includes two P6119 o-rings. The P6119 o-ring measures just under 5” inside diameter and 0.210” thickness. Manufactured and warrantied by Captain O-Ring LLC. Assembled in the USA! Captain O-Ring’s replacement P6119 o-ring will get your Bestway pump back in working order when replacing a failing or leaking filter cap cover gasket/seal o-ring. The P6119 o-ring is compatible with the following Bestway pumps:58117, 58118, 58122, 58123, 58148, 58149, 58383, 58384, 58386, 58389, 58122GS, 58388E, 58389GS, 58390E. Captain O-Ring LLC produces several different size o-rings for BestWay pumps, filters, and other equipment. Please check your system's user manual to confirm that it calls for this part number to ensure you order the correct o-ring size. If you're not sure, please contact Captain O-Ring LLC and we'll be happy to help determine the correct o-ring part number/size so you can get it right on the first try and get your system back up and running! We typically respond to inquiries within a few minutes to a couple of hours during business hours and are happy to help ensure you're ordering the right part to prevent frustrating returns and delays in your repair.