Value Collection ZMSCS70327 Silicone O-ring Dash 327

Product Description

The VALUE COLLECTION ZMSCS70327 is a round cross-section silicone O-ring sized at 1.75 inches inside diameter, 2.125 inches outside diameter, and 0.1875 inches thick. It carries a Dash 327 designation and a Shore A hardness rating of 70, placing it in the hard durometer range. Silicone compound gives this O-ring a wide service temperature range of -80 degrees F to 450 degrees F, making it a reliable choice for sealing applications where standard nitrile or EPDM materials fall short. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install this type of O-ring in static and low-movement sealing applications.

This O-ring is suited for residential and light commercial applications requiring good dry heat resistance and strong weather and ozone resistance. Silicone is appropriate for use with oils, certain chemicals, and solvents, though oil resistance is limited and should be evaluated against the specific fluid media before installation. It is commonly used in HVAC equipment seals, plumbing fittings, fluid system connections, and general mechanical assemblies where thermal cycling is a factor. Packaged in quantities of 25 per unit, it supports both single-job repairs and stocking for repeat service calls.

Key Features

• Wide temperature range from -80 degrees F to 450 degrees F suits high-heat and cold-weather environments
• Shore A 70 hardness provides firm sealing compression under typical joint loading
• Round cross-section profile for standard O-ring groove compatibility
• Good weather and ozone resistance extends service life in outdoor or exposed installations
• Compatible with oils, chemicals, and solvents — note limited oil resistance; verify fluid compatibility before use
• Packaged 25 units per order quantity for efficient field stocking

Compatibility

Designed as an OEM-style replacement or service O-ring for static sealing applications requiring a Dash 327 silicone O-ring with 1.75-inch ID, 2.125-inch OD, and 0.1875-inch thickness.

Installation Notes

Power down or depressurize the system fully before removing the existing O-ring. Inspect the groove for wear, scoring, or contamination before seating the new O-ring. Apply a compatible, system-appropriate lubricant sparingly to ease installation and prevent pinching or twisting. Because silicone has limited oil resistance, confirm fluid media compatibility before placing this O-ring in oil-immersed service.