Value Collection ZMSCS70360 Silicone O-ring Dash 360 5 Pack

Product Description

The VALUE COLLECTION ZMSCS70360 is a Dash 360 silicone O-ring designed for static and dynamic sealing applications across HVAC, plumbing, and industrial systems. It measures 5.875 inches inside diameter, 6.25 inches outside diameter, and 0.1875 inches thick with a round cross section. The silicone compound carries a Shore A hardness of 70 and is rated for continuous service from -80 degrees F to 450 degrees F, making it suitable for high-heat environments where standard Buna-N rings fall short. Each order ships as a pack of 5 rings. Licensed technicians and journeymen plumbers working on large-bore fittings, flanges, and equipment housings will find this size appropriate for applications requiring wide temperature tolerance and good dry heat resistance.

This O-ring fits large-bore sealing points common in commercial HVAC equipment, industrial piping flanges, pump housings, and chemical-handling assemblies. The silicone material provides good weather and ozone resistance, making it a reliable choice for outdoor or exposed mechanical connections. It offers limited oil resistance, so it is best suited for dry-heat, chemical, or solvent-sealing environments rather than heavy petroleum or hydraulic fluid service. Installers working on equipment with elevated ambient temperatures or cyclic thermal exposure will find the wide service range of this ring particularly useful.

Key Features

• Silicone compound rated from -80 degrees F to 450 degrees F for wide thermal range service
• Round cross section at 0.1875 inches thick seats consistently in standard Dash 360 grooves
• Shore A hardness of 70 provides firm, reliable sealing under compression
• Good resistance to weather, ozone, and a range of chemicals and solvents
• White color aids visual inspection during installation and maintenance
• Pack of 5 rings per order minimizes callbacks by keeping spares on hand

Compatibility

Designed as an OEM-style replacement or service O-ring for any application specifying a Dash 360 silicone O-ring with a 5.875-inch inside diameter and 6.25-inch outside diameter. Compatible with oils, chemicals, and solvents as noted; verify material compatibility with specific media before installation. Not FDA approved.

Installation Notes

Power down or isolate the system and relieve all pressure before removing the old O-ring or seating the replacement. Clean the groove thoroughly and inspect for burrs or corrosion that could damage the new ring. Silicone O-rings should be installed dry or with a silicone-compatible lubricant only — petroleum-based greases can degrade the compound over time. Follow applicable plumbing or mechanical codes, including IPC or IFGC guidelines where relevant, and torque fasteners to equipment-manufacturer specifications.