Value Collection ZMSCV70266 Viton O-ring Dash 266

Product Description

The VALUE COLLECTION ZMSCV70266 is a Viton (fluoroelastomer) O-ring sized to Dash 266 standards, with an 8 inch inside diameter, 8.25 inch outside diameter, and a 0.125 inch thick round cross section. Rated at 70 durometer hardness, this O-ring is engineered for demanding sealing applications where high temperature resistance, low compression set, and broad chemical compatibility are required. The fluoroelastomer compound handles continuous service from -15 degrees F up to 400 degrees F, making it suitable for systems that cycle through wide thermal ranges. Licensed plumbers, pipefitters, and industrial maintenance technicians typically install this size in large-bore sealing assemblies.

This O-ring is suited for use in petroleum product handling systems, hydraulic circuits, vacuum service lines, and process piping where standard Buna-N compounds fall short. The Dash 266 designation follows AS568 sizing standards, making it a direct fit in any application calling out that dash number. Its low gas permeability rating also supports vacuum and pressure containment service. Package quantity is 2 rings per package with a minimum order quantity of 1.

Key Features

• Fluoroelastomer (Viton) compound for broad chemical and petroleum product resistance
• 70 durometer hardness rating with hard hardness classification for positive compression sealing
• Operating temperature range of -15 degrees F to 400 degrees F
• Low compression set maintains seal integrity over repeated thermal cycles
• Low gas permeability supports vacuum service applications
• Round cross section, Dash 266 per AS568 sizing standard

Compatibility

Designed as a Dash 266 AS568-standard O-ring for large-bore sealing assemblies requiring fluoroelastomer compound compatibility with petroleum products and high-temperature process fluids.

Installation Notes

Installation is typically performed by licensed plumbers, pipefitters, or industrial maintenance technicians. De-pressurize and drain the system completely before disturbing any seal or fitting. Inspect the O-ring groove for nicks, burrs, or corrosion before seating the new ring, and apply a compatible lubricant to ease installation and prevent rolling. Do not stretch the O-ring over sharp threads or edges, as surface damage compromises the seal.