-158 BROWN FKM 75D O-RING

Part number VB75158 is an AS568-158 brown Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 4.737 in (120.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.943 in (125.55 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Expect good resistance to many acids, aggressive chemicals, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) delivers excellent resistance to compression set and permeation, outstanding high-temperature capability. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in low-molecular-weight organic acids or ketones and esters.

Typical settings include oil and gas, high-temperature process equipment, and semiconductor equipment.

Stocked as VB75158 and sold individually. Unit weight is approximately 4.2071 g and nominal inside diameter is listed as 4 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.