Ordered as E70158, this is an AS568-158 black EPDM (EPR) 70 Shore A O-Ring supplied 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). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
This material stands up to brake fluid, ketones, and phosphate ester hydraulic fluids. That behavior comes from the compound itself: EPDM (EPR) delivers very good flexibility at low temperature, strong performance in outdoor and exposed installations. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). It is not the right choice where mineral oil-based lubricants or petroleum oils and fuels are present.
You will find this material specified across potable water applications, outdoor equipment, and water and steam systems.
Order part number E70158, sold individually. Unit weight is approximately 2.542 g. Review your operating media and conditions against this specification before installation.
Description -158 BLACK EPDM 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 4.737 inch (120.32 mm)
Actual Outside Diameter 4.943 inch (125.55 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity