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: 216, 1 1/8 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 114.4 mm Nominal Inside Dia., 120.6 mm Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 008, 3/16 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 75 Shore A, Black, X, 50 PK O-Ring: 129.4 mm Nominal Inside Dia., 135.6 mm Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 320, 1 1/8 in Nominal Inside Dia., 1 1/2 in Nominal Outside Dia., 55 Shore D, White, 2 PK O-Ring: 4 mm Nominal Inside Dia., 6 mm Nominal Outside Dia., 6 mm Actual Outside Dia., Black, 25 PK O-Ring: 53 mm Nominal Inside Dia., 62 mm Nominal Outside Dia., 62 mm Actual Outside Dia., 2 PK O-Ring: 021, 15/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring, Contoured: Buna N, For 368, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 34 mm Nominal Inside Dia., 38 mm Nominal Outside Dia., 38 mm Actual Outside Dia., 50 PK O-Ring: 15.8 mm Nominal Inside Dia., 20.6 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 017, 11/16 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 70 Shore A, Black, 5 PK Backup Ring, Contoured: Buna N, For 251, 0.05 in Thick, 0.174 in Radius, 10 PK O-Ring: 100 mm Nominal Inside Dia., 104 mm Nominal Outside Dia., 104 mm Actual Outside Dia., 10 PK O-Ring: 152, 3 1/4 in Nominal Inside Dia., 3 7/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 426, 4 5/8 in Nominal Inside Dia., 5 1/8 in Nominal Outside Dia., 70 Shore A, Red, 5 PK O-Ring: 261, 6 3/4 in Nominal Inside Dia., 7 in Nominal Outside Dia., 7.012 in Actual Outside Dia. O-Ring: 230, 2 1/2 in Nominal Inside Dia., 2 3/4 in Nominal Outside Dia., 50 Shore A, Black, 10 PK O-Ring: 336, 2 7/8 in Nominal Inside Dia., 3 1/4 in Nominal Outside Dia., 90 Shore A, Black, 5 PK O-Ring: 276, 11 in Nominal Inside Dia., 11 1/4 in Nominal Outside Dia., 90 Shore A, Black, 2 PK ◀◀ ◀ ▶ ▶▶
