Value Collection ZMSCS70120 Silicone O-ring Dash 120 50-pack

Product Description

The VALUE COLLECTION ZMSCS70120 is a round cross-section silicone O-ring sized to Dash 120 standards, with a 1.0000-inch inside diameter, a 1.1880-inch outside diameter, and a 0.0937-inch (3/32 inch) cross-section thickness. Rated at 70 Shore A hardness, this O-ring is designed for sealing applications that demand reliable performance across an exceptionally wide temperature range, from -80 degrees F up to 450 degrees F. The silicone compound also provides good resistance to weathering and ozone exposure. Each package contains 50 O-rings. Plumbers, HVAC technicians, and mechanical service professionals install this type of seal in fluid and gas handling systems where standard nitrile or EPDM compounds fall short.

This O-ring is suited for use in residential and commercial systems where dry heat resistance and broad thermal cycling are primary concerns. Typical applications include sealing around fittings, valves, and connectors in HVAC equipment, plumbing assemblies, and light industrial fluid systems. The silicone material offers limited oil resistance, so it is best matched to environments involving air, water, mild chemicals, and solvents rather than petroleum-based fluids. The pack quantity of 50 supports service technicians who maintain fleets of equipment or require bench stock for recurring seal replacements.

Key Features

• Wide service temperature range: -80 degrees F to 450 degrees F suits extreme thermal environments
• 70 Shore A hardness provides firm, reliable sealing under compression
• Round cross-section profile fits standard Dash 120 O-ring grooves
• Good weather and ozone resistance extends service life in outdoor or high-UV installations
• Compatible with oils, chemicals, and solvents; note limited resistance to petroleum-heavy fluids
• Pack of 50 supports bench stock and multi-unit service calls

Compatibility

Designed as a standard Dash 120 replacement O-ring for any gland or groove machined to the Dash 120 dimensional specification (1.0000-inch ID, 0.0937-inch cross section).

Installation Notes

O-ring installation should be performed by a qualified technician following system-specific lockout and depressurization procedures before any seal is disturbed. Inspect the groove and mating surfaces for nicks or debris before seating the new ring. Lubrication compatible with the system media and the silicone compound should be applied to ease installation and prevent rollover. Do not stretch or pinch the O-ring during installation, as deformation of the cross section can cause immediate or premature leakage.