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The VALUE COLLECTION ZMSCS70FDA111 is a Dash 111 silicone O-ring supplied in a pack of 100 and intended for use in fluid sealing, piping, and equipment maintenance applications across plumbing, HVAC, and industrial service work. Manufactured from red silicone with a 70 Shore A hardness rating, this O-ring carries FDA-compliant material status, making it suitable for applications where food-grade or sanitary compliance is required. It measures 0.424 inches inside diameter, 0.625 inches outside diameter, and 0.0937 inches thick with a round cross section. The operating temperature range spans -80 degrees F to 450 degrees F, supporting both deep-cold and high-heat service environments.
This O-ring is suited for residential and commercial plumbing, HVAC equipment, and process piping installations where exposure to wide temperature swings, dry heat, weather, and ozone is a concern. The silicone compound offers limited oil resistance but performs well against chemicals and solvents, making it a practical choice for general-purpose sealing in non-petroleum-intensive systems. Licensed plumbers, HVAC technicians, and maintenance mechanics commonly stock Dash 111 O-rings for valve repairs, pump rebuilds, and fitting connections.
Designed as a standard Dash 111 replacement O-ring for use in valves, pumps, fittings, and equipment that specify a 0.424 inches ID by 0.625 inches OD silicone O-ring with a round cross section.
Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance mechanics. Shut off and depressurize the system fully before removing any fitting, valve, or pump component. Inspect the O-ring groove for damage or debris before seating the new ring. Avoid using petroleum-based lubricants with silicone O-rings; use a silicone-compatible lubricant if lubrication is needed during installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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