Value Collection ZMSCV70138 Viton O-ring Dash 138

Product Description

The VALUE COLLECTION ZMSCV70138 is a Dash 138 Viton O-ring with a round cross section, manufactured from fluoroelastomer for use in demanding fluid and gas sealing applications. It measures 2.125 inches inside diameter, 2.313 inches outside diameter, and 0.0937 inches thick. With a 70-durometer hardness rating, this O-ring delivers a firm, reliable seal under compression. The fluoroelastomer compound provides high temperature resistance up to 400 degrees F and performs down to -15 degrees F, making it well suited for HVAC, plumbing, refrigeration, and industrial service where petroleum-based fluids or elevated temperatures are present. Licensed tradespeople and industrial maintenance technicians are the primary installers.

This O-ring is used wherever a Dash 138 size seal is required in systems handling petroleum products, hydraulic fluids, or high-temperature media. Typical applications include pump housings, valve bodies, compressor fittings, and fluid line connections in both residential and commercial mechanical systems. The low compression set characteristic helps maintain a consistent seal over extended service life, and the low gas permeability makes it appropriate for vacuum service applications as well.

Key Features

• Fluoroelastomer (Viton-type) compound with wide chemical compatibility including petroleum products
• Rated for service from -15 degrees F to 400 degrees F
• 70-durometer hardness for firm, stable sealing under load
• Low compression set extends service life in static and dynamic sealing applications
• Low gas permeability supports vacuum service use
• Round cross section for standard O-ring groove fitment

Compatibility

Designed as a Dash 138 standard O-ring replacement compatible with systems and components requiring a 2.125-inch ID fluoroelastomer seal, particularly those in contact with petroleum products and high-temperature media.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial maintenance mechanics. Shut down and depressurize the system completely before removing the old O-ring or installing the replacement. Lightly lubricate the O-ring with a compatible fluid or grease before seating it in the groove to prevent tearing during assembly. Avoid overstretching the O-ring during installation, as this can reduce sealing performance.