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The VALUE COLLECTION ZMSCH70FDA135 is a Dash 135 O-ring manufactured from Buna-N (Nitrile Butadiene Rubber), the most widely used elastomer in fluid sealing applications. This O-ring measures 1.925 inches inside diameter, 2.125 inches outside diameter, and 0.094 inches thick, with a round cross section and a Shore A hardness rating of 70. It carries FDA approval and meets SAE and MIL-Spec standards, making it appropriate for food-processing, pharmaceutical, and general industrial environments where seal integrity and chemical compatibility are required. Each order contains 10 O-rings.
This O-ring is suited for plumbing, hydraulic, pneumatic, and HVAC applications where petroleum-based fluids and lubricants are present. The Buna-N compound offers excellent resistance to petroleum products, good compression set resistance, and strong tear and abrasion resistance. It performs reliably across a temperature range of -40 degrees F to 250 degrees F, covering most residential and light commercial service conditions. Installers working on pumps, valves, fittings, and fluid connectors will find this seal size appropriate for a wide range of standard port and groove configurations.
Designed as a standard Dash 135 O-ring replacement compatible with petroleum-based fluid systems, hydraulic circuits, pneumatic assemblies, and plumbing connections requiring a 1.925-inch ID seal groove.
O-ring installation is typically performed by licensed plumbers, HVAC technicians, and industrial maintenance professionals. Before replacing the O-ring, depressurize and drain the system completely and shut off all fluid supply valves. Lubricate the O-ring with a compatible lubricant before seating it in the groove to prevent twisting or pinching during assembly. Store unused O-rings away from direct sunlight, ozone sources, and electrical equipment to prevent premature degradation.
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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