Value Collection ZMSCS70045 Silicone O-ring Dash 045

Product Description

The VALUE COLLECTION ZMSCS70045 is a round cross-section silicone O-ring used for static and dynamic sealing applications across plumbing, HVAC, and industrial fluid systems. It measures 4 inches inside diameter, 4.125 inches outside diameter, and 0.0625 inches thick, conforming to Dash 045 sizing. Made from silicone at a Shore A hardness of 70, this O-ring is rated for a wide service temperature range of -80 degrees F to 450 degrees F, making it well-suited for environments with extreme heat cycling or outdoor exposure. It carries good weather and ozone resistance, and the round cross-section profile seats reliably in standard O-ring grooves. Each package contains 10 pieces.

This O-ring is appropriate for use in systems where wide temperature tolerance and dry heat resistance are required. Typical applications include HVAC equipment seals, plumbing fittings, pump housings, and valve assemblies exposed to oils, certain chemicals, and solvents. It is installed by HVAC technicians, plumbers, and maintenance mechanics during equipment service or rebuild procedures. Note that oil resistance is limited with silicone material, so verify fluid compatibility before installation in high-oil-content environments.

Key Features

• Silicone material rated from -80 degrees F to 450 degrees F for wide temperature range service
• Dash 045 standard sizing: 4 inches ID, 4.125 inches OD, 0.0625 inches thick
• Shore A hardness of 70 for firm, reliable groove seating
• Round cross-section for consistent compression and sealing in standard O-ring grooves
• Compatible with oils, chemicals, and solvents; good weather and ozone resistance
• Packaged in quantities of 10 per unit

Compatibility

Designed as a standard Dash 045 silicone O-ring for use in any system or fitting that accepts a 4 inches ID round cross-section O-ring of this dimensional profile.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or qualified mechanic. Shut off all fluid flow and relieve system pressure before removing the old O-ring or seating the replacement. Inspect the groove for debris, scoring, or damage before installation. Avoid lubricants that are incompatible with silicone, and confirm that the service fluid is compatible with silicone material before commissioning.