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: 175 mm Nominal Inside Dia., 181 mm Nominal Outside Dia., 181 mm Actual Outside Dia., 5 PK O-Ring: 036, 2 3/8 in Nominal Inside Dia., 2 1/2 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 172, 8 1/4 in Nominal Inside Dia., 8 7/16 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 023, 1 1/16 in Nominal Inside Dia., 1 3/16 in Nominal Outside Dia., 75 Shore A, Brown, 50 PK O-Ring: 122 mm Nominal Inside Dia., 129 mm Nominal Outside Dia., 129 mm Actual Outside Dia., Black O-Ring: 331, 2 1/4 in Nominal Inside Dia., 2 5/8 in Nominal Outside Dia., 70 Shore A, 1,850 PK O-Ring: 104, 1/8 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 006, 1/8 in Nominal Inside Dia., 1/4 in Nominal Outside Dia., 75 Shore A, Brown, Inch, 25 PK O-Ring: 21.5 mm Nominal Inside Dia., 26.5 mm Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 2.5 mm Nominal Inside Dia., 5.5 mm Nominal Outside Dia., 5.5 mm Actual Outside Dia., 100 PK O-Ring: 116, 3/4 in Nominal Inside Dia., 15/16 in Nominal Outside Dia., 70 Shore A, Green, 10 PK O-Ring: 37.7 mm Nominal Inside Dia., 44.7 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 58 mm Nominal Inside Dia., 68 mm Nominal Outside Dia., 68 mm Actual Outside Dia., Std, 5 PK O-Ring: 50 mm Nominal Inside Dia., 56 mm Nominal Outside Dia., 56 mm Actual Outside Dia., 25 PK O-Ring: 440, 6 3/4 in Nominal Inside Dia., 7 1/4 in Nominal Outside Dia., 75 Shore A, Brown Backup Ring, Contoured: Buna N, For 153, 0.053 in Thick, 0.129 in Radius, 25 PK O-Ring: 79.4 mm Nominal Inside Dia., 85.6 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 127 mm Nominal Inside Dia., 137 mm Nominal Outside Dia., 137 mm Actual Outside Dia., 2 PK O-Ring: 161, 5 1/2 in Nominal Inside Dia., 5 11/16 in Nominal Outside Dia., 70 Shore A, Red, 10 PK O-Ring: 2 41/64 in Nominal Inside Dia., 11/32 in Nominal Outside Dia., 55 Shore D, White, 10 PK ◀◀ ◀ ▶ ▶▶
