Value Collection ZMSCS70149 Silicone O-ring Dash 149

Product Description

The VALUE COLLECTION ZMSCS70149 is a Dash 149 silicone O-ring with a round cross section, designed for static and dynamic sealing applications across a wide range of operating conditions. It measures 2.813 inches inside diameter, 3.000 inches outside diameter, and 0.094 inches (3/32 inches) thick. The silicone compound delivers a working temperature range of -80 degrees F to 450 degrees F, making it suitable for high-heat and cold-environment service. This O-ring is sold in a package of 10 and is installed by maintenance technicians, plumbers, HVAC mechanics, and equipment service professionals wherever a reliable face or radial seal is required.

This O-ring is suited for applications that demand broad thermal tolerance and good resistance to dry heat, weathering, and ozone exposure. It carries a hard (70 durometer) rating and is compatible with oils, chemicals, and solvents, though oil resistance is noted as limited. Typical install scenarios include fluid system connections, pump housings, valve bodies, and HVAC equipment fittings where silicone elastomer is the specified seal material.

Key Features

• Wide temperature range: -80 degrees F to 450 degrees F for demanding thermal environments
• 70 durometer hardness rating — hard compound for stable sealing under compression
• Round cross section for consistent contact and predictable compression set
• Compatible with oils, chemicals, and solvents; note limited resistance to heavy oil immersion
• Good weather and ozone resistance for outdoor or exposed installations
• Packaged in quantities of 10 to support service stock and multi-point repairs

Compatibility

Designed as an OEM-style replacement or maintenance spare for equipment requiring a Dash 149 silicone O-ring with a 2.813 inches ID and 3.000 inches OD round cross section seal.

Installation Notes

Installation should be performed by a qualified technician following applicable equipment manufacturer guidelines. Depressurize and drain the system before removing or installing any sealing component. Inspect the groove and mating surfaces for damage or debris before seating the O-ring. Avoid twisting or overstretching the O-ring during installation; use a compatible, silicone-safe lubricant if needed to ease seating without damaging the elastomer.