Value Collection ZMSCS70020 Silicone O-ring Dash 020 50-pack

Product Description

The VALUE COLLECTION ZMSCS70020 is a round cross-section silicone O-ring rated for a wide service temperature range from -80 degrees F to 450 degrees F. With an inside diameter of 0.875 inches, an outside diameter of 1.0000 inches, and a thickness of 0.0625 inches, it meets Dash 020 dimensional standards. The silicone compound provides good dry heat resistance along with weather and ozone resistance. It is sold in packs of 50 and is commonly installed by HVAC technicians, plumbers, and mechanical service professionals working on sealing applications that demand thermal stability.

This O-ring is suited for static and light dynamic sealing applications in residential and commercial mechanical systems where exposure to elevated temperatures, outdoor weathering, or ozone is a concern. The silicone material performs well in dry heat environments and resists degradation from many chemicals and solvents. Note that oil resistance is limited, so this seal is not the preferred choice for high-oil-content fluid systems. Typical uses include equipment access ports, sensor fittings, pipe unions, and HVAC component seals where a reliable, temperature-stable elastomer is required.

Key Features

• Silicone elastomer construction rated from -80 degrees F to 450 degrees F
• Dash 020 standard dimensions: 0.875 inches ID, 1.0000 inches OD, 0.0625 inches thick
• Round cross-section profile for consistent compression sealing
• Good resistance to weather, ozone, and dry heat
• Compatible with oils, chemicals, and solvents in low-concentration exposure; limited oil resistance in high-oil environments
• Pack of 50 units minimizes restocking frequency for high-volume service operations

Compatibility

Designed as an OEM-style replacement or service seal for static and light dynamic sealing applications requiring a Dash 020 silicone O-ring in mechanical, HVAC, and plumbing assemblies.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or industrial mechanics. Always depressurize and isolate the system before removing the existing seal and seating the replacement O-ring. Inspect the groove and mating surfaces for nicks or debris that could compromise the seal. Avoid using petroleum-based lubricants with silicone O-rings; use a silicone-compatible lubricant if lubrication is needed during installation.