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: 444, 7 3/4 in Nominal Inside Dia., 8 1/4 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 427, 4 3/4 in Nominal Inside Dia., 5 1/4 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 8.6 mm Nominal Inside Dia., 13.4 mm Nominal Outside Dia., 13.4 mm Actual Outside Dia., 25 PK O-Ring: 32 mm Nominal Inside Dia., 37 mm Nominal Outside Dia., 37 mm Actual Outside Dia., 10 PK O-Ring: 212, 7/8 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 70 Shore A, Red, Inch, 25 PK O-Ring: 045, 4 in Nominal Inside Dia., 4 1/8 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 215, 1 1/16 in Nominal Inside Dia., 1 5/16 in Nominal Outside Dia., 70 Shore A, White, 25 PK O-Ring: 906, 3/8 in Nominal Outside Dia., 0.624 in Actual Outside Dia., 90 Shore A, Black, 100 PK Backup Ring, Contoured: Buna N, For 212, 0.05 in Thick, 0.174 in Radius, 100 PK O-Ring: 21.5 mm Nominal Inside Dia., 23.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 005, 3/32 in Nominal Inside Dia., 7/32 in Nominal Outside Dia., 55 Shore D, White, 25 PK O-Ring: 39 mm Nominal Inside Dia., 41 mm Nominal Outside Dia., 41 mm Actual Outside Dia., Std, 10 PK O-Ring: 135 mm Nominal Inside Dia., 140 mm Nominal Outside Dia., 140 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 173, 0.053 in Thick, 0.129 in Radius, 5 PK O-Ring: 146, 2 5/8 in Nominal Inside Dia., 2 13/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 12 mm Nominal Inside Dia., 22 mm Nominal Outside Dia., 22 mm Actual Outside Dia., 25 PK O-Ring: 021, 15/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 110, 3/8 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 60 Shore A, White, 10 PK O-Ring: 48 mm Nominal Inside Dia., 51 mm Nominal Outside Dia., 51 mm Actual Outside Dia., Std, 25 PK O-Ring: 103, 3/32 in Nominal Inside Dia., 9/32 in Nominal Outside Dia., 90 Shore A, Black, 50 PK ◀◀ ◀ ▶ ▶▶
