Value Collection ZMSCVB75239 Viton O-ring Dash 239 5-pack

Product Description

The VALUE COLLECTION ZMSCVB75239 is a Dash 239 Viton (fluoroelastomer) O-ring sold in a pack of five. It measures 3.625 inches inside diameter, 3.875 inches outside diameter, and 0.125 inches in cross-sectional thickness with a round cross-section profile. The compound carries a Shore A hardness of 75, placing it in the hard durometer range. Rated for service from -15 degrees F to 400 degrees F, this O-ring is suited for static and dynamic sealing in high-temperature fluid and gas systems. Plumbers, HVAC technicians, and industrial mechanics install this type of seal in hydraulic, pneumatic, and fuel-handling assemblies where standard nitrile or EPDM compounds would degrade.

This O-ring is designed for applications involving petroleum products, oils, fuels, and a wide range of industrial chemicals. The fluoroelastomer compound delivers low gas permeability, making it appropriate for vacuum service as well as pressurized systems. It is commonly specified in residential and commercial HVAC equipment, plumbing fittings, fuel delivery components, and general-purpose industrial machinery where elevated temperatures and chemical exposure are routine service conditions.

Key Features

• Fluoroelastomer (Viton) compound rated from -15 degrees F to 400 degrees F
• Dash 239 standard sizing: 3.625 inches ID, 3.875 inches OD, 0.125 inches thick
• Shore A hardness of 75 for low compression set under sustained load
• Good resistance to petroleum products, fuels, oils, and a wide spectrum of chemicals
• Low gas permeability suitable for vacuum service applications
• Sold in a pack of five to support multiple sealing points or replacement inventory

Compatibility

Designed as an OEM-style replacement or maintenance seal for any assembly requiring a Dash 239 O-ring in a fluoroelastomer compound, including hydraulic, pneumatic, fuel-handling, and HVAC components exposed to petroleum products or high operating temperatures.

Installation Notes

Depressurize and isolate the system before removing the old O-ring; never attempt seat replacement under pressure or with residual fluid flow. Inspect the groove and mating surface for nicks, scoring, or contamination before seating the new ring. Apply a compatible lubricant to the O-ring prior to installation to ease seating and reduce the risk of rolling or pinching. Consult applicable plumbing or mechanical codes for torque and assembly requirements specific to the fitting type.