Value Collection ZMSCE70277 Epdm O-ring Dash 277 Pack of 3

Product Description

The VALUE COLLECTION ZMSCE70277 is an EPDM (Ethylene Propylene Diene Monomer) O-ring with a Dash 277 designation, designed for static and dynamic sealing applications in fluid and steam systems. It measures 11.5 inches inside diameter, 11.75 inches outside diameter, and 0.125 inches thick, with a round cross section. Rated at Shore A hardness 70, this black O-ring handles a working temperature range of -65 degrees F to 300 degrees F. Plumbers, pipefitters, and mechanical technicians install this part in systems where reliable sealing under heat, steam, or hydraulic fluid exposure is required.

This O-ring is suited for use in hot water lines, steam service, and phosphate ester type hydraulic fluid systems. It also demonstrates excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems, making it applicable across industrial, commercial plumbing, and aerospace ground-support maintenance contexts. Each package contains 3 O-rings. Its large diameter profile fits equipment flanges and pipe connections common in commercial and industrial installations.

Key Features

• EPDM construction provides strong resistance to hot water, steam, and phosphate ester hydraulic fluids
• Excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems
• Round cross section for consistent seating and reliable static or dynamic sealing
• Shore A hardness rating of 70 for a hard, durable seal
• Wide service temperature range: -65 degrees F to 300 degrees F
• Sold in a package of 3 O-rings

Compatibility

Compatible materials include hot water, steam, and phosphate ester hydraulic fluids. Designed as an OEM-style replacement or service O-ring for large-diameter flange and pipe connections in commercial plumbing, industrial fluid systems, and hydraulic equipment.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanic. Depressurize and drain the system fully before removing the existing O-ring or unseating any fittings. Inspect the seating groove for scoring or debris before installing the new O-ring. Avoid twisting or stretching the O-ring beyond its natural shape during installation to maintain seal integrity.