Value Collection ZMSCS70145 Silicone O-ring Dash 145

Product Description

The VALUE COLLECTION ZMSCS70145 is a Dash 145 silicone O-ring with a round cross section, designed for static and dynamic sealing applications across HVAC, plumbing, and industrial systems. It measures 2.563 inches inside diameter, 2.75 inches outside diameter, and 0.094 inches thick. The silicone compound is rated for a wide service temperature range of -80 degrees F to 450 degrees F, making it well suited for applications that see extreme cold or high dry heat. A durometer hardness of 70 (Hard) provides firm sealing without excessive compression force. The part ships in a package quantity of 10.

This O-ring is appropriate for use in residential and commercial HVAC equipment, plumbing assemblies, pump housings, and fluid system fittings where silicone elastomer compatibility is required. Silicone compounds offer good resistance to weathering and ozone, which makes this ring a practical choice for outdoor or exposed equipment. It carries limited oil resistance, so it is best applied in dry-heat, chemical, or solvent service environments rather than heavy oil-wetted circuits. Technicians working on condensate pans, air handler housings, water treatment fittings, and similar assemblies will find this size a common replacement spec.

Key Features

• Silicone compound rated from -80 degrees F to 450 degrees F for wide-temperature service
• Dash 145 standard sizing: 2.563 inches ID, 2.75 inches OD, 0.094 inches thickness
• Durometer hardness 70 (Hard) round cross section for consistent compression seal
• Good weather and ozone resistance for outdoor or exposed equipment service
• Compatible with oils, chemicals, and solvents per manufacturer attribute data
• Package quantity of 10 per order unit

Compatibility

Designed as a standard Dash 145 silicone O-ring replacement for any seal groove or fitting specified for a 2.563-inch ID, 2.75-inch OD, 3/32-inch cross section elastomeric ring in HVAC, plumbing, or light industrial applications.

Installation Notes

Installation is performed by HVAC technicians, plumbers, or millwrights depending on the system. Always shut off and depressurize the system before removing the old O-ring and seating the replacement. Inspect the groove for burrs or corrosion that could damage the new ring during assembly. Do not use petroleum-based lubricants with silicone O-rings unless confirmed compatible with the system fluid; use a silicone-safe assembly lubricant where required.