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: 223, 1 5/8 in Nominal Inside Dia., 1 7/8 in Nominal Outside Dia., 85 Shore A O-Ring: 19 mm Nominal Inside Dia., 22 mm Nominal Outside Dia., 22 mm Actual Outside Dia., Std, 25 PK O-Ring: 270, 9 in Nominal Inside Dia., 9 1/4 in Nominal Outside Dia., 70 Shore A, Red, 5 PK Backup Ring, Contoured: Buna N, For 349, 0.076 in Thick, 0.262 in Radius, 10 PK O-Ring: 56 mm Nominal Inside Dia., 60 mm Nominal Outside Dia., 60 mm Actual Outside Dia., 5 PK O-Ring: 235 mm Nominal Inside Dia., 241 mm Nominal Outside Dia., 241 mm Actual Outside Dia., Black O-Ring: 114, 3/8 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 70 Shore A, Green, 25 PK O-Ring: 319, 1 1/16 in Nominal Inside Dia., 1 7/16 in Nominal Outside Dia., 90 Shore A, Black, 10 PK O-Ring: 156, 4 1/4 in Nominal Inside Dia., 4 7/16 in Nominal Outside Dia., 75 Shore A, Brown, 2 PK O-Ring: 208, 5/8 in Nominal Inside Dia., 7/8 in Nominal Outside Dia., 80 Shore A, Black, 5 PK O-Ring: 040, 2 7/8 in Nominal Inside Dia., 3 in Nominal Outside Dia., 70 Shore A, Black, Inch, 10 PK Backup Ring: Hytrel, For 246, 0.045 in Thick, Black, 25 PK O-Ring: 117, 13/16 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 55 Shore D, White, 10 PK O-Ring: 114, 5/8 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 0.818 in Actual Outside Dia. O-Ring: 127, 1 7/16 in Nominal Inside Dia., 1 5/8 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 15.1 mm Nominal Inside Dia., 18.3 mm Nominal Outside Dia., 70 Shore A, Black, Metric, 25 PK O-Ring: 231, 2 5/8 in Nominal Inside Dia., 2 7/8 in Nominal Outside Dia., 70 Shore A, Red, 25 PK O-Ring: 026, 1 1/4 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 55 Shore D, White, 10 PK O-Ring: 161, 5 1/2 in Nominal Inside Dia., 5 11/16 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 022, 1 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 75 Shore A, Black, 10 PK ◀◀ ◀ ▶ ▶▶
