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. ◀◀ ◀ ▶ ▶▶ Backup Ring, Contoured: Buna N, For 037, 0.049 in Thick, 0.087 in Radius, 50 PK O-Ring: 360, 5 7/8 in Nominal Inside Dia., 6 1/4 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 94 mm Nominal Inside Dia., 100 mm Nominal Outside Dia., 100 mm Actual Outside Dia., 2 PK O-Ring: 031, 1 3/4 in Nominal Inside Dia., 1 7/8 in Nominal Outside Dia., 70 Shore A, Black, 5 PK O-Ring: 21 mm Nominal Inside Dia., 31 mm Nominal Outside Dia., 31 mm Actual Outside Dia., Std, 5 PK O-Ring: 013, 7/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 99.4 mm Nominal Inside Dia., 105.6 mm Nominal Outside Dia., 75 Shore A, Black, 2 PK Backup Ring, Contoured: Buna N, For 436, 0.117 in Thick, 0.344 in Radius, 10 PK O-Ring: 114.5 mm Nominal Inside Dia., 120.5 mm Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 7.2 mm Nominal Inside Dia., 10.7 mm Nominal Outside Dia., 10.7 mm Actual Outside Dia., 50 PK O-Ring: 35 mm Nominal Inside Dia., 37 mm Nominal Outside Dia., 37 mm Actual Outside Dia., 10 PK O-Ring: 50 mm Nominal Inside Dia., 52 mm Nominal Outside Dia., 52 mm Actual Outside Dia., 10 PK O-Ring: 223, 1 5/8 in Nominal Inside Dia., 1 7/8 in Nominal Outside Dia., 75 Shore A, Black, 5 PK O-Ring: 430, 5 1/8 in Nominal Inside Dia., 5 5/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK Backup Ring, Contoured: Buna N, For 130, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 305 mm Nominal Inside Dia., 313 mm Nominal Outside Dia., 313 mm Actual Outside Dia., Black O-Ring: 27 mm Nominal Inside Dia., 32 mm Nominal Outside Dia., 32 mm Actual Outside Dia., 10 PK O-Ring: 006, 1/8 in Nominal Inside Dia., 1/4 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 428, 4 7/8 in Nominal Inside Dia., 5 3/8 in Nominal Outside Dia., 75 Shore A, Black, 2 PK O-Ring: 120, 1 in Nominal Inside Dia., 1 3/16 in Nominal Outside Dia., 90 Shore A, Black, 50 PK ◀◀ ◀ ▶ ▶▶
