Value Collection ZMSCE70273 Epdm O-ring Dash 273 Pack of 4

Product Description

The VALUE COLLECTION ZMSCE70273 is an EPDM O-ring with a round cross section, sized to Dash 273 standards. It measures 9.75 inches inside diameter, 10 inches outside diameter, and 0.125 inches thick. The ethylene propylene diene monomer compound delivers broad chemical and temperature resistance, covering a working range of -65 degrees F to 300 degrees F. Hardness is rated at 70 Shore A, placing it in the hard durometer class. Each purchase includes a pack of 4 rings. Licensed HVAC technicians, plumbers, and industrial mechanics install this style of O-ring as a static or low-motion dynamic face seal in fluid-handling assemblies.

This O-ring is suited for residential and commercial applications involving hot water lines, steam systems, and phosphate ester type hydraulic fluids. It also carries noted resistance to Skydrol fluids used in commercial aircraft hydraulic systems, making it relevant to aviation maintenance environments. The large diameter makes it appropriate for pipe flanges, pump housings, and valve bonnets where a reliable face seal is required. It is not FDA approved and should not be specified for food-contact applications.

Key Features

• EPDM compound rated for continuous service from -65 degrees F to 300 degrees F
• Dash 273 sizing: 9.75 inches ID, 10 inches OD, 0.125 inches cross section
• 70 Shore A hardness for firm, reliable sealing under compression
• Excellent resistance to hot water, steam, and phosphate ester hydraulic fluids
• Compatible with Skydrol hydraulic fluids used in commercial aviation systems
• Round cross section; black color; sold in a pack of 4

Compatibility

Compatible with hot water, steam, and phosphate ester hydraulic fluid systems. Also suitable for Skydrol fluid service in commercial aircraft hydraulic applications. Not recommended for petroleum-based oils, fuels, or aromatic solvents.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial mechanics. Depressurize and drain the system fully before removing or installing any O-ring seal. Inspect the groove and mating surfaces for nicks, burrs, or corrosion before seating the ring. Avoid twisting or stretching the O-ring during installation to prevent reduced sealing performance.