Check the listing for details. (3pk) O-Rings for Whirlpool WHKF-DWHBB WHKF-C9 & American Plumber W10-PR W10-OR. Condition: New. Listed at 12.99 USD. (3 Pack) O-Rings for Whirlpool WHKF-DWHBB (WHKF-C9) & American Plumber W10-PR (W10-OR) by Captain O-Ring Product Features: Three (3) Replacement O-Rings for Whirlpool WHKF-DWHBB / WHCF-DWHBB (WHKF-C9) & American Plumber W10-PR (W10-OR) Water Filter Housings Approximately 5.5" Inside Diamter Material: Buna-N Stops leaks between your water filter housing and filter head Manufactured and Warrantied by Captain O-Ring LLC, with decades of experience in the sealing and chemical industry. This 3 Pack of WHKF-C9 / W10-OR replacement o-rings is compatible with Whirlpool WHKF-DWHBB / WHCF-DWHBB & American Plumber W10-PR water filter housings. The o-rings have an approximate outside diameter of 5-3/4" and are made of nitrile butadiene rubber (Buna-N) for flexibility and resistance to abrasion and tearing during installation and long term use. What to expect: This item includes three (3) O-Rings in a resealable zip-top poly bag with "Captain O-Ring" branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC.(3 Pack) O-Rings for Whirlpool WHKF-DWHBB (WHKF-C9) & American Plumber W10-PR (W10-OR) by Captain O-Ring Product Features: Three (3) Replacement O-Rings for Whirlpool WHKF-DWHBB / WHCF-DWHBB (WHKF-C9) & American Plumber W10-PR (W10-OR) Water Filter Housings Approximately 5.5" Inside Diamter Material: Buna-N Stops leaks between your water filter housing and filter head Manufactured and Warrantied by Captain O-Ring LLC, with decades of experience in the sealing and chemical industry. This 3 Pack of WHKF-C9 / W10-OR replacement o-rings is compatible with Whirlpool WHKF-DWHBB / WHCF-DWHBB & American Plumber W10-PR water filter housings. The o-rings have an approximate outside diameter of 5-3/4" and are made of nitrile butadiene rubber (Buna-N) for flexibility and resistance to abrasion and tearing during installation and long term use. What to expect: This item includes three (3) O-Rings in a resealable zip-top poly bag with "Captain O-Ring" branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC.