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: 13 mm Nominal Inside Dia., 17 mm Nominal Outside Dia., 17 mm Actual Outside Dia., Std, 25 PK O-Ring: 111, 7/16 in Nominal Inside Dia., 5/8 in Nominal Outside Dia., 60 Shore A, White, 10 PK O-Ring: 19 mm Nominal Inside Dia., 25 mm Nominal Outside Dia., 25 mm Actual Outside Dia., Red, 25 PK O-Ring: 394, 25 in Nominal Inside Dia., 25 3/8 in Nominal Outside Dia., 25.36 in Actual Outside Dia. O-Ring: 4 mm Nominal Inside Dia., 10 mm Nominal Outside Dia., 10 mm Actual Outside Dia., 25 PK O-Ring: 18 mm Nominal Inside Dia., 24 mm Nominal Outside Dia., 24 mm Actual Outside Dia., 10 PK O-Ring: 210, 3/4 in Nominal Inside Dia., 1 in Nominal Outside Dia., 70 Shore A, White, 25 PK O-Ring: 237, 3 3/8 in Nominal Inside Dia., 3 5/8 in Nominal Outside Dia., 50 Shore A, Red, 5 PK O-Ring: 126, 1 3/8 in Nominal Inside Dia., 1 9/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 013, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Blue, 5 PK O-Ring: 5.3 mm Nominal Inside Dia., 10.1 mm Nominal Outside Dia., 10.1 mm Actual Outside Dia., 25 PK O-Ring: 021, 15/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 237, 3 3/8 in Nominal Inside Dia., 3 5/8 in Nominal Outside Dia., 70 Shore A, Red, 25 PK O-Ring: 140 mm Nominal Inside Dia., 144 mm Nominal Outside Dia., 144 mm Actual Outside Dia., 5 PK O-Ring Assortment: SAE, Buna N and Viton(R), 1,168 Pieces, 19 # of Sizes O-Ring: 6.6 mm Nominal Inside Dia., 10.2 mm Nominal Outside Dia., 10.2 mm Actual Outside Dia., 25 PK O-Ring: 39 mm Nominal Inside Dia., 45 mm Nominal Outside Dia., 45 mm Actual Outside Dia., 5 PK Backup Ring, Contoured: Buna N, For 270, 0.05 in Thick, 0.174 in Radius, 5 PK Backup Ring, Contoured: Buna N, For 458, 0.117 in Thick, 0.344 in Radius, 2 PK O-Ring: 009, 7/32 in Nominal Inside Dia., 11/32 in Nominal Outside Dia., 70 Shore A, Black, 25 PK ◀◀ ◀ ▶ ▶▶
