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: 3 mm Nominal Inside Dia., 5 mm Nominal Outside Dia., 5 mm Actual Outside Dia., Black, 50 PK O-Ring: 038, 2 5/8 in Nominal Inside Dia., 2 3/4 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 386, 17 in Nominal Inside Dia., 17 3/8 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 460, 15 1/2 in Nominal Inside Dia., 16 in Nominal Outside Dia., 75 Shore A, Black O-Ring: 114 mm Nominal Inside Dia., 120 mm Nominal Outside Dia., 120 mm Actual Outside Dia., 5 PK O-Ring: 213, 15/16 in Nominal Inside Dia., 1 3/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 340, 3 3/8 in Nominal Inside Dia., 3 3/4 in Nominal Outside Dia., 80 Shore A, Black, 2 PK O-Ring: 19 mm Nominal Inside Dia., 23 mm Nominal Outside Dia., 23 mm Actual Outside Dia., X, 5 PK O-Ring: 20 mm Nominal Inside Dia., 24 mm Nominal Outside Dia., 24 mm Actual Outside Dia., Std, 10 PK Backup Ring, Contoured: Buna N, For 253, 0.05 in Thick, 0.174 in Radius, 10 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 70 Shore A, Black, FDA, 10 PK O-Ring: 49.6 mm Nominal Inside Dia., 61 mm Nominal Outside Dia., 61 mm Actual Outside Dia., Black O-Ring: 113, 9/16 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 70 Shore A, Black, FDA, 10 PK O-Ring: 274, 10 in Nominal Inside Dia., 10 1/4 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 138, 2 1/8 in Nominal Inside Dia., 2 5/16 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 225, 1 7/8 in Nominal Inside Dia., 2 1/8 in Nominal Outside Dia., 50 Shore A, Black, 10 PK O-Ring: 020, 7/8 in Nominal Inside Dia., 1 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 10 mm Nominal Inside Dia., 15 mm Nominal Outside Dia., 15 mm Actual Outside Dia., 50 PK O-Ring: 119, 15/16 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 239, 3 5/8 in Nominal Inside Dia., 3 7/8 in Nominal Outside Dia., 55 Shore D, White, 2 PK ◀◀ ◀ ▶ ▶▶
