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: 245, 4 3/8 in Nominal Inside Dia., 4 5/8 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 6.8 mm Nominal Inside Dia., 10.6 mm Nominal Outside Dia., 70 Shore A, Black, 100 PK O-Ring: 116, 3/4 in Nominal Inside Dia., 15/16 in Nominal Outside Dia., 75 Shore A, Black, 25 PK O-Ring: 4.9 mm Nominal Inside Dia., 8.7 mm Nominal Outside Dia., 8.7 mm Actual Outside Dia., 50 PK O-Ring: 223, 1 5/8 in Nominal Inside Dia., 1 7/8 in Nominal Outside Dia., 75 Shore A, Brown, 10 PK O-Ring: 117, 13/16 in Nominal Inside Dia., 1 in Nominal Outside Dia., 50 Shore A, Red, 25 PK O-Ring: 176, 9 1/4 in Nominal Inside Dia., 9 7/16 in Nominal Outside Dia., 90 Shore A, Black, 2 PK O-Ring: 41 mm Nominal Inside Dia., 49 mm Nominal Outside Dia., 49 mm Actual Outside Dia., 25 PK Backup Ring, Contoured: Buna N, For 227, 0.05 in Thick, 0.174 in Radius, 50 PK O-Ring: 66 mm Nominal Inside Dia., 72 mm Nominal Outside Dia., 72 mm Actual Outside Dia., 5 PK O-Ring: 50 mm Nominal Inside Dia., 54 mm Nominal Outside Dia., 54 mm Actual Outside Dia., Red, 10 PK O-Ring: 7.6 mm Nominal Inside Dia., 12.4 mm Nominal Outside Dia., 12.4 mm Actual Outside Dia., 25 PK O-Ring: 114, 5/8 in Nominal Inside Dia., 13/16 in Nominal Outside Dia., 0.818 in Actual Outside Dia. O-Ring: 5.5 mm Nominal Inside Dia., 9.5 mm Nominal Outside Dia., 9.5 mm Actual Outside Dia., 50 PK O-Ring: 202, 1/4 in Nominal Inside Dia., 1/2 in Nominal Outside Dia., 75 Shore A, Brown, 25 PK O-Ring: 18 mm Nominal Inside Dia., 21 mm Nominal Outside Dia., 21 mm Actual Outside Dia., Red, 25 PK O-Ring: 74.4 mm Nominal Inside Dia., 80.6 mm Nominal Outside Dia., 70 Shore A, Black, 25 PK O-Ring: 64 mm Nominal Inside Dia., 71 mm Nominal Outside Dia., 71 mm Actual Outside Dia., 25 PK O-Ring: 216, 1 1/8 in Nominal Inside Dia., 1 3/8 in Nominal Outside Dia., 90 Shore A, Black, 25 PK O-Ring: 9.5 mm Nominal Inside Dia., 12.5 mm Nominal Outside Dia., 12.5 mm Actual Outside Dia., 50 PK ◀◀ ◀ ▶ ▶▶
