Value Collection ZMSCV70178 O-ring Dash 178 Viton

Product Description

The VALUE COLLECTION ZMSCV70178 is a Dash 178 Viton O-ring with a round cross section, designed for static and dynamic sealing applications in fluid and gas systems. Manufactured from fluoroelastomer, it measures 9.75 inches inside diameter and 9.938 inches outside diameter with a wall thickness of 0.094 inches. The compound is rated at 70 Shore A hardness and handles a working temperature range of -15 degrees F to 400 degrees F. It is suited for use by licensed HVAC technicians, plumbers, and industrial maintenance professionals who need a reliable, high-temperature-resistant seal in demanding service environments.

This O-ring is specified for applications involving petroleum-based fluids, hydraulic systems, fuel handling, and chemical process lines where elevated temperatures and broad chemical exposure are expected. Its fluoroelastomer construction provides low compression set and low gas permeability, making it a practical choice for vacuum service connections as well as pressurized fluid fittings in commercial and industrial systems. Each package contains 2 O-rings.

Key Features

• Fluoroelastomer (Viton) material with wide chemical compatibility including petroleum products
• Working temperature range of -15 degrees F to 400 degrees F
• 70 Shore A hardness rating for firm, reliable sealing under compression
• Low compression set and high temperature resistance for long service life
• Suitable for vacuum service with low gas permeability
• Round cross section for standard groove fitment

Compatibility

Designed as an OEM-style replacement or service O-ring for fluid and gas system fittings requiring a Dash 178 size with fluoroelastomer construction compatible with petroleum-based products and high-temperature media.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified industrial maintenance technicians. Depressurize and fully drain the system before removing the existing O-ring. Lightly lubricate the O-ring with a compatible fluid or grease before seating it in the groove to prevent tearing during assembly. Avoid using petroleum-incompatible lubricants that may degrade the seal.