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The VALUE COLLECTION ZMSCV70312 is a Dash 312 Viton (fluoroelastomer) O-ring sold in a pack of 10. It features a round cross-section with a 0.625-inch inside diameter, 1.000-inch outside diameter, and a 0.1875-inch thickness. Rated at 70 durometer hardness, this O-ring is built for demanding sealing applications that require resistance to high temperatures, petroleum-based fluids, and a wide range of chemicals. It is suited for vacuum service and exhibits low gas permeability, making it a dependable choice in hydraulic, pneumatic, and fluid-handling assemblies where standard rubber compounds fall short.
This O-ring is commonly used in HVAC, refrigeration, plumbing, and industrial fluid systems where petroleum products or elevated operating temperatures are present. Its working temperature range of -15 degrees F to 400 degrees F makes it appropriate for both heating and cooling equipment service. Plumbers, HVAC technicians, and industrial maintenance professionals install this type of seal during valve rebuilds, fitting connections, and pump or compressor servicing.
Compatible with petroleum-based products and systems requiring fluoroelastomer seals. Designed as a standard Dash 312 O-ring replacement suitable for valves, fittings, pumps, and fluid-handling components that call for a 0.625-inch ID round cross-section seal.
Viton O-rings should be installed by a qualified technician familiar with the system being serviced. Always depressurize and isolate the line or component before removing the old seal. Inspect the mating groove for damage, burrs, or contamination before seating the replacement O-ring. Apply a compatible lubricant to ease installation and avoid twisting or distorting the cross-section during fitment.
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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