Value Collection ZMSCV70355 Viton O-ring Dash 355

Product Description

The VALUE COLLECTION ZMSCV70355 is a Dash 355 Viton fluoroelastomer O-ring designed for static and dynamic sealing applications across HVAC, plumbing, and industrial fluid systems. It measures 5.25 inches inside diameter, 5.625 inches outside diameter, and 0.1875 inches thick, with a round cross section and a Shore A hardness rating of 70. Viton fluoroelastomer construction delivers strong resistance to petroleum-based fluids, high operating temperatures up to 400 degrees F, and low gas permeability, making it a reliable choice for demanding service environments. Licensed tradespeople and maintenance technicians install this ring where chemical compatibility and temperature stability are critical.

This O-ring fits applications involving petroleum products, hydraulic fluids, and high-temperature media in residential and commercial systems. Its operating range spans from -15 degrees F to 400 degrees F, covering a wide range of seasonal and process conditions. The low compression set characteristic helps maintain a consistent seal over repeated thermal cycles, reducing the frequency of seal replacement during scheduled maintenance intervals. Sold in a package quantity of two.

Key Features

• Fluoroelastomer (Viton) material provides wide-spectrum chemical compatibility with petroleum-based fluids
• High-temperature resistance rated to 400 degrees F continuous service
• Low compression set maintains seal integrity across repeated thermal cycles
• Low gas permeability makes this ring suitable for vacuum service applications
• Round cross section for standard groove fitment in Dash 355 gland configurations
• 70 Shore A hardness rating classified as hard for positive sealing under pressure

Compatibility

Designed as a standard Dash 355 O-ring replacement for any application requiring a 5.25 inches ID fluoroelastomer seal in a round-groove gland. Compatible with petroleum products and systems requiring broad chemical resistance.

Installation Notes

Installation should be performed by a qualified technician following the equipment manufacturer's service procedures. Shut down and depressurize the system completely before removing the existing seal. Inspect the gland groove for nicks, burrs, or corrosion that could damage the new ring, and apply a compatible lubricant to ease installation without pinching or twisting the O-ring. Avoid using petroleum-incompatible lubricants that may degrade the fluoroelastomer compound.