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: 220, 1 3/8 in Nominal Inside Dia., 1 5/8 in Nominal Outside Dia., 55 Shore D, White, 10 PK O-Ring: 1 5/64 in Nominal Inside Dia., 1.254 in Actual Outside Dia., 55 Shore D, White, 25 PK O-Ring: 367, 7 1/2 in Nominal Inside Dia., 7 7/8 in Nominal Outside Dia., 80 Shore A, Black O-Ring: 133, 1 13/16 in Nominal Inside Dia., 2 in Nominal Outside Dia., 55 Shore D, White, 5 PK O-Ring: 142, 2 3/8 in Nominal Inside Dia., 2 9/16 in Nominal Outside Dia., 55 Shore D, White, 5 PK O-Ring: 62 mm Nominal Inside Dia., 66 mm Nominal Outside Dia., 66 mm Actual Outside Dia., 5 PK O-Ring: 123, 1 3/16 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 75 Shore A, Black, 10 PK O-Ring: 19 mm Nominal Inside Dia., 25 mm Nominal Outside Dia., 25 mm Actual Outside Dia., 5 PK O-Ring: 450, 10 1/2 in Nominal Inside Dia., 11 in Nominal Outside Dia., 70 Shore A, Black, 2 PK O-Ring: 350, 4 5/8 in Nominal Inside Dia., 5 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 174, 8 3/4 in Nominal Inside Dia., 8 15/16 in Nominal Outside Dia., 90 Shore A, Black, 2 PK Backup Ring, Contoured: Buna N, For 439, 0.117 in Thick, 0.344 in Radius, 10 PK O-Ring: 9.1 mm Nominal Inside Dia., 12.3 mm Nominal Outside Dia., 12.3 mm Actual Outside Dia., 25 PK O-Ring: 112, 1/2 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 70 Shore A, Green, 25 PK O-Ring: 018, 3/4 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 70 Shore A, White, 25 PK O-Ring: 11.8 mm Nominal Inside Dia., 16.6 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 75 mm Nominal Inside Dia., 87 mm Nominal Outside Dia., 87 mm Actual Outside Dia., 2 PK O-Ring: 235, 3 1/8 in Nominal Inside Dia., 3 3/8 in Nominal Outside Dia., 70 Shore A, Red Backup Ring, Contoured: Buna N, For 354, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 206, 1/2 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 70 Shore A, Red, 25 PK ◀◀ ◀ ▶ ▶▶
