Direct Replacement For Hardware 4001756; American Plumber 152032, W10-OR; APEC O-RING-HB; -Plus 151122-03; OR-100, 151122-27, 01019189; HomeMaster #Oring122; 151122, BUNA-N Housing Compatibility #10 and #20 Big Blue opaque filter housings with 1 inch or 1-1/2 inch inlet/outlets; 150233, 150234, 150235, 150236, 150237, 150238, 150239, 150240, 150467, 150468, 150469, 150470, 150686, 150687, 150689, 150690, 150688, 150691, BBFS-22, BBFS-222 Other Housing Compatibility Aqua- H-PR-10BV-1; APEC HBB-20/HBB-10 series (input sizes: 3/4 inch, 1 inch, 1.5 inch), HBC-20/HBC-10 series (input sizes: 3/4 inch, 1 inch, 1.5 inch); Hardware 49561; -Plus HD-10-R50; American Plumber W10-PR, 152014, W2010-PR, 152015, W15-PR, 152016, W2015-PR, 152017, WWHC, 152022; HD-950, HD-950A; BF7 Used in applications such as drinking water purification, swimming pools, industrial processes, and more. Part: Water 151122 O-Ring (3 Pack) Includes 3 replacement o-rings (also called seals or gaskets) to repair your leaking water filter housing 151122 Size o-rings are approximately 5.5 inch Inside Diameter x 5.83 inch Outside Diameter x 0.165 inch Thickness Part Number: 15112 Inside Diameter: 5.5 inches Outside Diameter: 5.83 inches Section Thickness: 0.165 inches Color: black Material: rubber Package Contents: 3 * O-Ring Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3 cm.