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: 449, 10 in Nominal Inside Dia., 10 1/2 in Nominal Outside Dia., 75 Shore A, Brown O-Ring: 109, 5/16 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 70 Shore A, Black, 7,000 PK O-Ring: 013, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 212, 7/8 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 1.137 in Actual Outside Dia. O-Ring: 352, 4 7/8 in Nominal Inside Dia., 5 1/4 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK Backup Ring, Contoured: Buna N, For 129, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 313, 11/16 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 70 Shore A, Black, 50 PK O-Ring: 120, 1 in Nominal Inside Dia., 1 3/16 in Nominal Outside Dia., 1.193 in Actual Outside Dia. O-Ring: 011, 5/16 in Nominal Inside Dia., 7/16 in Nominal Outside Dia., 0.441 in Actual Outside Dia. O-Ring: 227, 2 1/8 in Nominal Inside Dia., 2 3/8 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 125 mm Nominal Inside Dia., 131 mm Nominal Outside Dia., 131 mm Actual Outside Dia., 5 PK O-Ring: 461, 16 in Nominal Inside Dia., 16 1/2 in Nominal Outside Dia., 70 Shore A, Red, 2 PK O-Ring: 7 mm Nominal Inside Dia., 11 mm Nominal Outside Dia., 11 mm Actual Outside Dia., Std, 10 PK O-Ring: 37 mm Nominal Inside Dia., 44 mm Nominal Outside Dia., 44 mm Actual Outside Dia., 25 PK O-Ring: 017, 11/16 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 80 mm Nominal Inside Dia., 92 mm Nominal Outside Dia., 92 mm Actual Outside Dia., 75 Shore A O-Ring: 110, 3/8 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring, Contoured: Buna N, For 375, 0.076 in Thick, 0.262 in Radius, 5 PK O-Ring: 112, 1/2 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 0.693 in Actual Outside Dia. O-Ring: 118 mm Nominal Inside Dia., 123 mm Nominal Outside Dia., 123 mm Actual Outside Dia., 5 PK ◀◀ ◀ ▶ ▶▶
