Catalog Hardware O-Rings and O-Ring Kits O-rings and O-ring kits help ensure a tight seal to prevent air and fluid leaks in applications such as air conditioner repair or plumbing installations. ◀◀ ◀ ▶ ▶▶ O-Ring: 27 mm Nominal Inside Dia., 32 mm Nominal Outside Dia., 32 mm Actual Outside Dia., 50 PK O-Ring: 110, 3/8 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 24 mm Nominal Inside Dia., 27 mm Nominal Outside Dia., 27 mm Actual Outside Dia., 50 PK O-Ring: 32.2 mm Nominal Inside Dia., 38.2 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 208, 5/8 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 0.887 in Actual Outside Dia. O-Ring: 70 mm Nominal Inside Dia., 73 mm Nominal Outside Dia., 73 mm Actual Outside Dia., 5 PK O-Ring: 238, 3 1/2 in Nominal Inside Dia., 3 3/4 in Nominal Outside Dia., 55 Shore D, White, 2 PK O-Ring: 180 mm Nominal Inside Dia., 192 mm Nominal Outside Dia., 192 mm Actual Outside Dia., Black O-Ring: 19.5 mm Nominal Inside Dia., 24.5 mm Nominal Outside Dia., 75 Shore A, Black, 10 PK O-Ring: 109 mm Nominal Inside Dia., 113 mm Nominal Outside Dia., 113 mm Actual Outside Dia., 5 PK O-Ring: 10 mm Nominal Inside Dia., 16 mm Nominal Outside Dia., 16 mm Actual Outside Dia., 10 PK O-Ring: 46 mm Nominal Inside Dia., 49 mm Nominal Outside Dia., 49 mm Actual Outside Dia., 25 PK O-Ring: 178, 9 3/4 in Nominal Inside Dia., 9 15/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK Backup Ring, Contoured: Buna N, For 155, 0.053 in Thick, 0.129 in Radius, 10 PK O-Ring: 3 mm Nominal Inside Dia., 5 mm Nominal Outside Dia., 5 mm Actual Outside Dia., Black, 50 PK O-Ring: 218, 1 1/4 in Nominal Inside Dia., 1 1/2 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 128, 1 1/2 in Nominal Inside Dia., 1 11/16 in Nominal Outside Dia., 75 Shore A, Brown, 25 PK O-Ring: 11 mm Nominal Inside Dia., 16 mm Nominal Outside Dia., 16 mm Actual Outside Dia., 50 PK O-Ring: 047, 4 1/2 in Nominal Inside Dia., 4 5/8 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 050, 5 1/4 in Nominal Inside Dia., 5 3/8 in Nominal Outside Dia., 70 Shore A, Red, 2 PK ◀◀ ◀ ▶ ▶▶
