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: 3.5 mm Nominal Inside Dia., 6.5 mm Nominal Outside Dia., 6.5 mm Actual Outside Dia., 50 PK O-Ring: 335, 2 3/4 in Nominal Inside Dia., 3 1/8 in Nominal Outside Dia., 75 Shore A, Brown, 5 PK O-Ring: 226, 2 in Nominal Inside Dia., 2 1/4 in Nominal Outside Dia., 55 Shore D, White, 5 PK O-Ring: 215, 1 1/16 in Nominal Inside Dia., 1 5/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 365, 7 in Nominal Inside Dia., 7 3/8 in Nominal Outside Dia., 7.395 in Actual Outside Dia. O-Ring: 41 mm Nominal Inside Dia., 53 mm Nominal Outside Dia., 53 mm Actual Outside Dia., 5 PK O-Ring: 55 mm Nominal Inside Dia., 61 mm Nominal Outside Dia., 61 mm Actual Outside Dia., 10 PK Backup Ring, Contoured: Buna N, For 425, 0.117 in Thick, 0.344 in Radius, 10 PK O-Ring: 4 mm Nominal Inside Dia., 7 mm Nominal Outside Dia., 7 mm Actual Outside Dia., Black, 25 PK O-Ring: 100 mm Nominal Inside Dia., 102 mm Nominal Outside Dia., 102 mm Actual Outside Dia., 5 PK O-Ring: 044, 3 3/4 in Nominal Inside Dia., 3 7/8 in Nominal Outside Dia., 70 Shore A, Black, 10 PK O-Ring: 30.3 mm Nominal Inside Dia., 35.1 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 7 mm Nominal Inside Dia., 11 mm Nominal Outside Dia., 11 mm Actual Outside Dia., Std, 100 PK X-Ray and Metal Detectable O-Ring: 010, 1/2 in Nominal Inside Dia., 11/16 in Nominal Outside Dia. O-Ring: 905, 2/5 in Nominal Inside Dia., 5/16 in Nominal Outside Dia., 70 Shore A, Red, 50 PK O-Ring: 028, 1 3/8 in Nominal Inside Dia., 1 1/2 in Nominal Outside Dia., 75 Shore A, Black, Inch O-Ring: 14 mm Nominal Inside Dia., 18 mm Nominal Outside Dia., 18 mm Actual Outside Dia., Std, 10 PK O-Ring: 157, 4 1/2 in Nominal Inside Dia., 4 11/16 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 210, 3/4 in Nominal Inside Dia., 1 in Nominal Outside Dia., 70 Shore A, Black, Inch, 25 PK O-Ring: 903, 3/16 in Nominal Outside Dia., 0.429 in Actual Outside Dia., 70 Shore A, Black, 90 PK ◀◀ ◀ ▶ ▶▶
