Value Collection ZMSCVB75139 Viton O-ring Dash 139

Product Description

The VALUE COLLECTION ZMSCVB75139 is a Dash 139 Viton fluoroelastomer O-ring designed for static and dynamic sealing applications in fluid and gas handling systems. With a 2.188-inch inside diameter, 2.375-inch outside diameter, and a 0.094-inch cross-section thickness, this O-ring provides a reliable seal in systems exposed to petroleum products, high temperatures, and aggressive chemical environments. The Brown fluoroelastomer compound carries a Shore A hardness rating of 75 and is rated for continuous service from -15 degrees F to 400 degrees F. Sold in a package quantity of 10, it is a common consumable stocked by HVAC, plumbing, and industrial maintenance professionals.

This O-ring is suited for use in petroleum product lines, fuel systems, hydraulic circuits, and chemical transfer applications where standard Buna-N or EPDM compounds lack sufficient temperature or chemical resistance. Its round cross-section and standard Dash 139 sizing make it a drop-in fit wherever that dash number is called out in OEM or MRO specifications. Low gas permeability and suitability for vacuum service extend its usefulness to refrigeration and vacuum pump applications common in HVAC service work.

Key Features

• Fluoroelastomer (Viton-type) compound with good resistance to petroleum products and wide chemical compatibility
• Operating temperature range of -15 degrees F to 400 degrees F for high-heat service environments
• Shore A hardness of 75 with a hard hardness rating for low compression set under sustained load
• Low gas permeability and rated for vacuum service applications
• Standard Dash 139 cross-section for drop-in replacement in OEM and MRO assemblies
• Packaged in quantities of 10 for efficient stocking and servicing of multiple units

Compatibility

Designed as a standard Dash 139 O-ring replacement compatible with petroleum products and systems requiring fluoroelastomer sealing material. Consult the OEM service manual to confirm dash number and material specification before installation.

Installation Notes

O-ring installation should be performed by a qualified technician following system-specific lockout and bleed-down procedures before disassembly. Inspect the mating groove and sealing surfaces for nicks, burrs, or contamination before seating the O-ring. Apply a light coat of compatible lubricant to the O-ring during assembly to prevent twisting or tearing on installation. Do not use lubricants incompatible with fluoroelastomer compounds, as degradation can cause premature seal failure.