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: 21 mm Nominal Inside Dia., 27 mm Nominal Outside Dia., 27 mm Actual Outside Dia., Std, 50 PK O-Ring: 470, 21 in Nominal Inside Dia., 21 1/2 in Nominal Outside Dia., 70 Shore A, Black, Inch O-Ring: 026, 1 1/4 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 80 Shore A, Black, 10 PK O-Ring: 030, 1 5/8 in Nominal Inside Dia., 1 3/4 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 020, 7/8 in Nominal Inside Dia., 1 in Nominal Outside Dia., 55 Shore D, White, 10 PK O-Ring: 144, 2 1/2 in Nominal Inside Dia., 2 11/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 21 mm Nominal Inside Dia., 27 mm Nominal Outside Dia., 27 mm Actual Outside Dia., Std, 10 PK Backup Ring, Contoured: Buna N, For 039, 0.049 in Thick, 0.087 in Radius, 50 PK O-Ring: 025, 1 3/16 in Nominal Inside Dia., 1 5/16 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 65 mm Nominal Inside Dia., 68 mm Nominal Outside Dia., 68 mm Actual Outside Dia., Std, 25 PK O-Ring: 11.5 mm Nominal Inside Dia., 13.5 mm Nominal Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 910, 90 Shore A, Black, 25 PK O-Ring: 457, 14 in Nominal Inside Dia., 14 1/2 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 7.5 mm Nominal Inside Dia., 12.5 mm Nominal Outside Dia., 12.5 mm Actual Outside Dia., 50 PK O-Ring: 28 mm Nominal Inside Dia., 32 mm Nominal Outside Dia., 32 mm Actual Outside Dia., Std, 10 PK O-Ring: 16 mm Nominal Inside Dia., 26 mm Nominal Outside Dia., 26 mm Actual Outside Dia., 25 PK O-Ring: 016, 5/8 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 75 Shore A, Blue, 10 PK O-Ring: 005, 3/32 in Nominal Inside Dia., 7/32 in Nominal Outside Dia., 0.241 in Actual Outside Dia. O-Ring: 034, 2 1/8 in Nominal Inside Dia., 2 1/4 in Nominal Outside Dia., 75 Shore A, Blue, 2 PK O-Ring: 6.3 mm Nominal Inside Dia., 11.1 mm Nominal Outside Dia., 11.1 mm Actual Outside Dia., 50 PK ◀◀ ◀ ▶ ▶▶
