Viton 75-157-Black-Pk2

Ordered as SB-V70157-2, this is an AS568-157 black Viton® (FKM) 70 Shore A O-Ring with an inside diameter of 4.487 in (113.97 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.693 in (119.2 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint. The catalog record notes: 0.103CSX4.487"IDX4.693"OD.

Viton® (FKM) is specified here for very low compression set at elevated temperature, excellent resistance to compression set and permeation. It resists many acids, aggressive chemicals, and aromatic hydrocarbons. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C).

It sees regular use in high-temperature process equipment, semiconductor equipment, and chemical processing.

Order part number SB-V70157-2, sold by the bag. Nominal inside diameter is listed as 4 1/2 inch. Review your operating media and conditions against this specification before installation.