Value Collection ZMSCS70019 Silicone O-ring Dash 019

Product Description

The VALUE COLLECTION ZMSCS70019 is a Dash 019 silicone O-ring designed for static and dynamic sealing applications across a wide range of operating conditions. Measuring 0.801 inches inside diameter, 0.938 inches outside diameter, and 0.0625 inches thick with a round cross section, this O-ring is molded from silicone compound rated at 70 Shore A hardness. It handles temperatures from -80 degrees F to 450 degrees F, making it a practical choice where wide thermal range and dry heat resistance are required. Plumbers, HVAC technicians, and mechanical contractors reach for silicone O-rings when standard Buna-N compounds fall short in high-heat or ozone-exposed environments.

This O-ring is suited for use in residential and commercial systems where exposure to heat, weather, and ozone is a concern. Typical applications include HVAC equipment fittings, plumbing connections, and fluid-handling assemblies that cycle through broad temperature swings. The silicone material provides good weather and ozone resistance. Note that oil resistance is limited, so this O-ring is not the first choice for petroleum-heavy hydraulic circuits. It ships in a package quantity of 50, suitable for stocking service trucks or shop inventory.

Key Features

• Wide operating temperature range: -80 degrees F to 450 degrees F
• Round cross section, Dash 019 standard sizing for consistent fitment
• 70 Shore A hardness rated Hard for reliable compression sealing
• Good resistance to dry heat, weather, and ozone
• Compatible with oils, chemicals, and solvents in low-exposure applications
• Packaged in quantities of 50 for shop or truck stock convenience

Compatibility

Designed as a standard Dash 019 O-ring replacement suitable for any groove dimensioned to the Dash 019 specification in HVAC, plumbing, and general fluid-handling equipment where silicone elastomer is the specified material.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or mechanical contractors. Always depressurize and de-energize the system before replacing O-rings, and flush or wipe the seating groove clean of debris and old sealant before installing the new ring. Do not stretch or roll the O-ring into the groove using sharp tools that may nick the sealing surface. Consult applicable IPC or IFGC code sections when servicing sealed gas or fluid connections to confirm elastomer material compatibility.