Value Collection ZMSCVB75138 Viton O-ring Dash 138

Product Description

The VALUE COLLECTION ZMSCVB75138 is a Dash 138 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing applications across HVAC, plumbing, hydraulic, and industrial fluid-handling systems. It measures 2.125 inches inside diameter, 2.313 inches outside diameter, and 0.094 inches thick, with a round cross-section profile. The fluoroelastomer compound delivers a 75 Shore A hardness rating, wide chemical compatibility, and a working temperature range of -15 degrees F to 400 degrees F. These characteristics make it well suited for high-temperature service, vacuum service, and environments where low gas permeability is critical.

This O-ring is used in residential and commercial applications wherever a Dash 138 standard-size seal is specified. Common install scenarios include refrigeration service valves, hydraulic fittings, pump housings, and plumbing unions that contact petroleum-based fluids, oils, or fuels. The brown fluoroelastomer compound is compatible with petroleum products and offers low compression set, meaning it holds its seal shape under sustained clamping load. Technicians working on fuel systems, chemical lines, or high-temperature HVAC components regularly specify this size and material combination. Sold in a package of 10.

Key Features

• Fluoroelastomer (Viton-type) compound rated for -15 degrees F to 400 degrees F continuous service
• 75 Shore A hardness (hard rating) for reliable seating under pressure
• Low compression set maintains sealing force over extended service intervals
• Good resistance to petroleum products and a wide spectrum of chemical compatibility
• Suitable for vacuum service and applications requiring low gas permeability
• Round cross-section, Dash 138 standard dimensions — a common replacement size across many fitting and valve types

Compatibility

Designed as a standard Dash 138 O-ring replacement compatible with systems and components that contact petroleum products, oils, fuels, and many industrial chemicals. Consult equipment service manuals to confirm Dash 138 fluoroelastomer material suitability before installation.

Installation Notes

O-ring installation is performed by licensed HVAC technicians, plumbers, and mechanical contractors depending on the system type. Always depressurize and lock out the system before replacing any seal. Inspect the groove and mating surfaces for nicks or corrosion that could prevent proper seating. Apply a thin film of compatible lubricant to the O-ring during installation to reduce the risk of twisting or tearing; do not use lubricants that are incompatible with fluoroelastomer compounds.