Value Collection ZMSCE70371 O-ring Dash 371 Epdm 5-pack

Product Description

The VALUE COLLECTION ZMSCE70371 is a Dash 371 EPDM O-ring with a round cross section, sized at 8.5 inches inside diameter, 8.875 inches outside diameter, and 0.1875 inches thick. Molded from ethylene propylene diene monomer (EPDM) compound with a 70 Shore A hardness rating, this O-ring delivers reliable static and dynamic sealing in demanding fluid-system applications. It is sold in a package of five rings. Licensed plumbers, pipefitters, hydraulic system technicians, and maintenance mechanics typically install this size in large-bore sealing applications.

This O-ring is rated for service from -65 degrees F to 300 degrees F, making it suitable for hot water and steam systems as well as phosphate ester type hydraulic fluids. EPDM compound provides excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems. Typical install scenarios include large-diameter pipe flanges, pump housings, valve bonnets, and hydraulic manifolds in industrial, plumbing, and aerospace maintenance environments.

Key Features

• EPDM compound with 70 Shore A hardness for firm, reliable sealing
• Wide temperature range: -65 degrees F to 300 degrees F
• Compatible with hot water, steam, and phosphate ester hydraulic fluids
• Excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems
• Round cross section for consistent groove fit and uniform compression
• Sold as a 5-pack for stocking or multi-unit service calls

Compatibility

Compatible with hot water, steam, and phosphate ester type hydraulic fluid systems. Suitable for use where Skydrol fluid resistance is required in commercial aircraft hydraulic maintenance. Designed as an OEM-style replacement O-ring in large-bore plumbing, industrial, and hydraulic sealing applications.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified hydraulic technician following applicable IPC or system-specific service procedures. Depressurize and drain the system fully before removing the old O-ring and seating the replacement. Inspect the groove and mating surfaces for nicks or corrosion that could compromise the seal. Do not use petroleum-based lubricants with EPDM O-rings; use only a compatible water-based or silicone lubricant if lubrication is required during installation.