Value Collection ZMSCE70347 O-ring Dash 347 Epdm

Product Description

The VALUE COLLECTION ZMSCE70347 is a Dash 347 EPDM O-ring with a round cross section, designed for static and dynamic sealing applications in fluid and pneumatic systems. It measures 4.25 inches inside diameter, 4.625 inches outside diameter, and 0.1875 inches (3/16 inches) thick. The compound is Ethylene Propylene Diene Monomer (EPDM) with a Shore A hardness rating of 70, placing it in the hard durometer range. The material delivers broad temperature resistance from -65 degrees F to 300 degrees F, making it well suited for high-temperature sealing duties. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install this O-ring in systems handling hot water, steam, and phosphate ester hydraulic fluids.

This O-ring is appropriate for residential and commercial plumbing systems, hydronic heating equipment, and industrial hydraulic assemblies where steam or hot water exposure is routine. It also performs in phosphate ester type hydraulic fluid environments, including applications requiring resistance to Skydrol fluids used in commercial aircraft hydraulic systems. The round cross section ensures consistent compression and reliable sealing across standard Dash 347 groove geometry. Each package contains 13 O-rings with a minimum order quantity of 1.

Key Features

• EPDM compound rated for service from -65 degrees F to 300 degrees F
• Shore A hardness of 70 for reliable compression and seal integrity
• Compatible with hot water, steam, and phosphate ester hydraulic fluids
• Excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems
• Round cross section conforms to standard Dash 347 groove dimensions
• Sold in a package of 13 with no minimum order requirement beyond a single package

Compatibility

Designed as an OEM-style replacement or service O-ring for applications requiring a Dash 347 cross section in EPDM material, including systems handling hot water, steam, and phosphate ester type hydraulic fluids.

Installation Notes

Licensed plumbers and hydraulic system technicians should depressurize and drain the system completely before replacing any O-ring. Inspect the groove for nicks, corrosion, or debris that could compromise the seal surface. Lubricate the O-ring with a fluid compatible with EPDM prior to installation to prevent twisting or tearing during assembly. Follow applicable IPC or IFGC guidelines for fluid system repair depending on the application.