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: 31 mm Nominal Inside Dia., 37 mm Nominal Outside Dia., 37 mm Actual Outside Dia., 50 PK O-Ring: 314, 3/4 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK Backup Ring, Contoured: Buna N, For 267, 0.05 in Thick, 0.174 in Radius, 5 PK O-Ring: 218, 1 1/4 in Nominal Inside Dia., 1 1/2 in Nominal Outside Dia., 70 Shore A, Natural, 2 PK O-Ring: 110, 3/8 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 75 Shore A, Blue, 10 PK O-Ring: 232 mm Nominal Inside Dia., 240 mm Nominal Outside Dia., 240 mm Actual Outside Dia., Black O-Ring: 40 mm Nominal Inside Dia., 46 mm Nominal Outside Dia., 46 mm Actual Outside Dia., Std, 5 PK O-Ring: 007, 5/32 in Nominal Inside Dia., 9/32 in Nominal Outside Dia., 70 Shore A, Black, 25 PK Backup Ring, Contoured: Buna N, For 106, 0.053 in Thick, 0.129 in Radius, 100 PK O-Ring: 206, 1/2 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 0.762 in Actual Outside Dia. O-Ring: 113, 9/16 in Nominal Inside Dia., 3/4 in Nominal Outside Dia., 70 Shore A, Green, 25 PK Backup Ring: Hytrel, For 234, 0.045 in Thick, Black, 25 PK O-Ring: 36 mm Nominal Inside Dia., 41 mm Nominal Outside Dia., 41 mm Actual Outside Dia., Std, 25 PK O-Ring: 232, 2 3/4 in Nominal Inside Dia., 3 in Nominal Outside Dia., 50 Shore A, Red, 10 PK O-Ring: 49 mm Nominal Inside Dia., 52 mm Nominal Outside Dia., 52 mm Actual Outside Dia., Std, 5 PK O-Ring: 67 mm Nominal Inside Dia., 70 mm Nominal Outside Dia., 70 mm Actual Outside Dia., 25 PK O-Ring: 19 mm Nominal Inside Dia., 24 mm Nominal Outside Dia., 24 mm Actual Outside Dia., X, 5 PK O-Ring: 5 mm Nominal Inside Dia., 11 mm Nominal Outside Dia., 11 mm Actual Outside Dia., Std, 100 PK O-Ring: 64.6 mm Nominal Inside Dia., 69.4 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 008, 3/16 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 70 Shore A, Black, 5 PK ◀◀ ◀ ▶ ▶▶
