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: 330, 2 1/8 in Nominal Inside Dia., 2 1/2 in Nominal Outside Dia., 50 Shore A, Black, 5 PK O-Ring: 45 mm Nominal Inside Dia., 53 mm Nominal Outside Dia., 53 mm Actual Outside Dia., 25 PK O-Ring: 21.5 mm Nominal Inside Dia., 24.5 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 222, 1 1/2 in Nominal Inside Dia., 1 3/4 in Nominal Outside Dia., 80 Shore A, Black, 5 PK O-Ring: 37 mm Nominal Inside Dia., 41 mm Nominal Outside Dia., 41 mm Actual Outside Dia., 50 PK O-Ring: 273, 9 3/4 in Nominal Inside Dia., 10 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 201, 3/16 in Nominal Inside Dia., 7/16 in Nominal Outside Dia., 70 Shore A, Red, 25 PK O-Ring: 18 mm Nominal Inside Dia., 23 mm Nominal Outside Dia., 23 mm Actual Outside Dia., X, 10 PK O-Ring: 27 mm Nominal Inside Dia., 31 mm Nominal Outside Dia., 31 mm Actual Outside Dia., Std, 50 PK O-Ring: 012, 3/8 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 70 Shore A, Natural, 10 PK O-Ring: 103 mm Nominal Inside Dia., 110 mm Nominal Outside Dia., 110 mm Actual Outside Dia., 2 PK O-Ring: 81 mm Nominal Inside Dia., 88 mm Nominal Outside Dia., 88 mm Actual Outside Dia., 5 PK O-Ring: 99.6 mm Nominal Inside Dia., 111 mm Nominal Outside Dia., 111 mm Actual Outside Dia., 5 PK O-Ring: 013, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, White, 25 PK O-Ring: 132, 1 3/4 in Nominal Inside Dia., 1 15/16 in Nominal Outside Dia., 70 Shore A, Red, 10 PK O-Ring: 430, 5 1/8 in Nominal Inside Dia., 5 5/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK Backup Ring, Contoured: Buna N, For 035, 0.049 in Thick, 0.087 in Radius, 50 PK O-Ring: 12.5 mm Nominal Inside Dia., 17.5 mm Nominal Outside Dia., 70 Shore A, Black, 50 PK Backup Ring, Contoured: Buna N, For 112, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 410, 2 5/8 in Nominal Inside Dia., 3 1/8 in Nominal Outside Dia., 70 Shore A, Black, 5 PK ◀◀ ◀ ▶ ▶▶
