Value Collection ZMSCS70435 O-ring Dash 435 Silicone

Product Description

The VALUE COLLECTION ZMSCS70435 is a Dash 435 silicone O-ring with a round cross section, designed for static and dynamic sealing applications across a wide range of industrial and mechanical systems. It measures 5.75 inches inside diameter and 6.25 inches outside diameter, with a 0.25-inch thickness. The silicone compound is rated from -80 degrees F to 450 degrees F, making it well suited for high-heat environments where standard nitrile or EPDM compounds would degrade. Hardness is rated at 70 Shore A, placing it in the hard durometer range. This O-ring is installed by plumbers, HVAC technicians, and mechanical contractors working on fluid and air sealing applications.

This O-ring is appropriate for use in systems that require resistance to dry heat, weathering, and ozone exposure. It is compatible with oils, chemicals, and solvents in limited concentrations. Typical install scenarios include large-bore pipe flanges, pump housings, and equipment covers where a high-temperature silicone seal is specified. Note that this compound offers limited oil resistance and should not be selected for heavy petroleum immersion service. It is not FDA approved.

Key Features

• Silicone compound handles continuous service from -80 degrees F to 450 degrees F
• 70 Shore A hardness for firm, reliable sealing compression
• Round cross section ensures uniform groove seating
• Resistant to weathering, ozone, and dry heat
• Compatible with oils, chemicals, and solvents in limited exposure
• Dash 435 standard sizing for drop-in replacement use

Compatibility

Designed as an OEM-style replacement silicone O-ring for large-bore sealing applications requiring Dash 435 dimensioning in industrial, HVAC, and mechanical plumbing assemblies.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or mechanical contractors. Depressurize and de-energize the system before removing the existing O-ring. Clean the groove thoroughly and inspect for damage before seating the new ring. Do not use petroleum-based lubricants with silicone O-rings; use a silicone-compatible assembly lubricant only.