Value Collection ZMSCE70243 O-ring Dash 243 Epdm 70

Product Description

The VALUE COLLECTION ZMSCE70243 is a Dash 243 EPDM O-ring with a round cross section, used to create fluid-tight seals in plumbing, hydraulic, and mechanical systems. It measures 4.125 inches inside diameter, 4.375 inches outside diameter, and 0.125 inches thick. The ethylene propylene diene monomer (EPDM) compound is rated to 70 Shore A hardness, giving it a firm, durable profile suited to demanding sealing applications. This O-ring is sold in packages of 10 and is installed by licensed plumbers, HVAC technicians, and mechanical contractors in both residential and commercial settings.

This O-ring is designed for use in systems handling hot water, steam, and phosphate ester type hydraulic fluids. Its EPDM formulation also provides excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems, making it a practical choice for both building mechanical systems and aerospace ground support environments. Typical installation scenarios include pump housings, valve bodies, pipe flanges, and hydraulic manifolds where a firm, temperature-resistant seal is required across a wide service range.

Key Features

• EPDM compound rated for service from -65 degrees F to 300 degrees F
• 70 Shore A hardness rating provides a firm, resilient seal
• Round cross section ensures consistent compression and sealing contact
• Compatible with hot water, steam, and phosphate ester hydraulic fluids
• Resistant to Skydrol fluids used in commercial aircraft hydraulic systems
• Sold in a package of 10 for shop stock or multi-unit jobs

Compatibility

Compatible with systems handling hot water, steam, and phosphate ester type hydraulic fluids. Designed as an OEM-style replacement or service O-ring for any application requiring a Dash 243 EPDM seal at 4.125 inches ID.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system technicians. Shut down the system, depressurize all lines, and drain any fluid before replacing an O-ring. Lubricate the O-ring with a compatible lubricant before seating to prevent tearing during assembly. Inspect the groove and mating surface for wear or damage before installing the new seal.