Check the listing for details. Captain O-Ring – Replacement O-Rings for PUR Plus Sink Faucet Filters (2 Sets). Condition: New. Listed at 9.99 USD. Captain O-Ring – Replacement O-Rings for PUR Plus Sink Faucet Filters (2 Sets) Product Features: Replacement o-rings for PUR (Pure) Plus Faucet Filters. Compatible with PUR Plus Horizontal and Vertical Faucet Filter systems. Not compatible with original PUR Faucet Filter. Includes two (2) sets of o-rings (two sizes, two of each, equals four o-rings total). Includes the larger o-ring that seals the screw-on filter housing lid and the smaller o-ring on the internal nipple where the filter cartridge sits. Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA! Get your leaking faucet filter back in working order with Captain O-Ring’s replacement o-rings for PUR Plus Faucet Water Filters. Compatible with PUR Plus Horizontal and Vertical Faucet Filter systems (not compatible with original PUR Faucet Filter, only the Plus models). This o-ring set includes both the larger o-ring that seals the screw-on filter housing lid as well as the smaller o-ring found inside the housing on the nipple where the filter cartridge sits. See photos for more info on where each of these two o-rings are located. With this handy 2-set o-ring kit, you’ll be able to replace these two commonly replaced o-rings as well as have a full second set on hand as spares for the future. Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA!