Value Collection ZMSCFS026 Fluorosilicone O-ring Dash 026 5pk

Product Description

The VALUE COLLECTION ZMSCFS026 is a Dash 026 fluorosilicone O-ring with a round cross section, designed for static and dynamic sealing applications where both extreme temperatures and fuel or solvent exposure are a concern. It measures 1.239 inches inside diameter, 1.375 inches outside diameter, and 0.0625 inches thick. The fluorosilicone compound delivers a working temperature range of -80 degrees F to 400 degrees F, making it suitable for aerospace, automotive, and industrial fluid system service. Shore hardness is rated at 70 (Hard). This part is sold in a package of 5 rings and meets MIL-R-25988 Type 1 Class 1 requirements.

This O-ring is used wherever a standard Dash 026 seal is called for in plumbing, fuel, hydraulic, or pneumatic connections subject to wide thermal cycling or chemical exposure. Typical install scenarios include fuel system fittings, aircraft hydraulic ports, industrial process valves, and HVAC refrigerant-side or solvent-handling connections. Licensed technicians and trade professionals working on fuel or fluid systems will recognize the Dash 026 callout as a standard AS568 size, simplifying sourcing during field repairs or scheduled maintenance.

Key Features

• Fluorosilicone compound resists fuels, oils, and solvents while retaining flexibility across a wide temperature range
• Operating range of -80 degrees F to 400 degrees F suits both extreme cold and high-heat service environments
• Round cross section conforms to standard O-ring groove geometry for Dash 026 dimensions
• Shore 70 hardness (Hard rating) provides firm sealing under pressure without excessive compression set
• MIL-R-25988 Type 1 Class 1 compliant for mil-spec and demanding industrial applications
• Package of 5 rings supports job-site stocking and reduces per-unit cost on routine seal replacement work

Compatibility

Designed as a standard Dash 026 replacement O-ring for any application requiring an AS568-026 size fluorosilicone seal with a round cross section.

Installation Notes

Depressurize and de-energize the system fully before removing the old seal and inspect the groove for nicks, corrosion, or dimensional wear before installing the new ring. Lubricate the O-ring with a compatible fluid or grease approved for fluorosilicone compounds to ease installation and reduce the risk of tearing during assembly. Do not use petroleum-based lubricants that are incompatible with the seal material. Follow applicable system codes and manufacturer torque guidelines for the mating fittings or flanges.