Value Collection ZMSCV70359 Viton O-ring Dash 359

Product Description

The VALUE COLLECTION ZMSCV70359 is a Dash 359 Viton (fluoroelastomer) O-ring with a round cross section, designed for static and dynamic sealing applications in fluid and gas systems. It measures 5.75 inches inside diameter, 6.125 inches outside diameter, and 0.1875 inches thick. With a Shore hardness of 70 and a working temperature range of -15 degrees F to 400 degrees F, this O-ring handles high-heat environments and aggressive petroleum-based media. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install this part where a reliable, chemically resistant seal is required.

This O-ring is suited for use in plumbing, HVAC, hydraulic, and industrial fluid systems where contact with petroleum products, fuels, oils, or high-temperature media is expected. Its fluoroelastomer compound provides low gas permeability, making it appropriate for vacuum service as well. The large diameter profile fits pipe flanges, large-bore valve seats, pump housings, and similar equipment requiring a Dash 359 standard seal. Each package contains 2 O-rings.

Key Features

• Fluoroelastomer (Viton) compound offers wide chemical compatibility with petroleum products, fuels, and oils
• Working temperature range of -15 degrees F to 400 degrees F suits high-heat service environments
• Low compression set helps maintain a reliable seal over extended service intervals
• Low gas permeability makes this O-ring suitable for vacuum service applications
• Round cross section profile conforms to Dash 359 standard dimensions
• Shore hardness of 70 (hard rating) resists extrusion under pressure

Compatibility

Designed as a standard Dash 359 replacement O-ring for large-bore flanges, valve seats, pump housings, and similar assemblies that specify a fluoroelastomer seal with 5.75 inches ID and 6.125 inches OD. Compatible with petroleum-based fluids and media per supplier data.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified maintenance professional. Always depressurize and isolate the system before removing the old O-ring and installing the replacement. Inspect the mating groove for damage, contamination, or wear before seating the new O-ring. Do not use petroleum-based lubricants incompatible with the sealing system; confirm lubricant compatibility with the fluoroelastomer compound before use.