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: 011, 5/16 in Nominal Inside Dia., 7/16 in Nominal Outside Dia., 75 Shore A, Black, 5 PK O-Ring: 118, 7/8 in Nominal Inside Dia., 1 1/16 in Nominal Outside Dia., 75 Shore A, Black, Inch X-Ray and Metal Detectable O-Ring: 206, 5/16 in Nominal Inside Dia., 7/16 in Nominal Outside Dia. Backup Ring, Contoured: Buna N, For 317, 0.076 in Thick, 0.262 in Radius, 100 PK O-Ring: 210, 3/4 in Nominal Inside Dia., 1 in Nominal Outside Dia., 70 Shore A, Natural, 2 PK O-Ring: 203, 5/16 in Nominal Inside Dia., 9/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 257, 5 7/8 in Nominal Inside Dia., 6 1/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK Backup Ring: Hytrel, For 208, 0.045 in Thick, Black, 50 PK O-Ring: 212, 7/8 in Nominal Inside Dia., 1 1/8 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 9 mm Nominal Inside Dia., 13 mm Nominal Outside Dia., 13 mm Actual Outside Dia., 50 PK O-Ring: 015, 9/16 in Nominal Inside Dia., 11/16 in Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 361, 6 in Nominal Inside Dia., 6 3/8 in Nominal Outside Dia., 6.395 in Actual Outside Dia. O-Ring: 219, 1 5/16 in Nominal Inside Dia., 1 9/16 in Nominal Outside Dia., 75 Shore A, Black, 5 PK X-Ray and Metal Detectable O-Ring: 111, 1 1/4 in Nominal Inside Dia., 1 1/2 in Nominal Outside Dia. O-Ring: 105 mm Nominal Inside Dia., 109 mm Nominal Outside Dia., 109 mm Actual Outside Dia., 5 PK O-Ring: 46 mm Nominal Inside Dia., 50 mm Nominal Outside Dia., 50 mm Actual Outside Dia., Std, 25 PK O-Ring: 012, 3/8 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 70 Shore A, Black, 10,000 PK O-Ring: 130 mm Nominal Inside Dia., 142 mm Nominal Outside Dia., 142 mm Actual Outside Dia., 2 PK Backup Ring, Contoured: Buna N, For 440, 0.117 in Thick, 0.344 in Radius, 10 PK O-Ring: 8 mm Nominal Inside Dia., 12 mm Nominal Outside Dia., 12 mm Actual Outside Dia., 50 PK ◀◀ ◀ ▶ ▶▶
