Value Collection ZMSCV70393 Viton O-ring Dash 393

Product Description

The VALUE COLLECTION ZMSCV70393 is a Dash 393 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing applications that demand high-temperature resistance and broad chemical compatibility. With a 24-inch inside diameter, a 24.375-inch outside diameter, and a 0.1875-inch (3/16 inch) cross-section thickness, this round-profile O-ring seals large-bore flanges, pipe joints, vessel covers, and pump housings. Rated for service from -15 degrees F to 400 degrees F, the fluoroelastomer compound delivers low compression set and low gas permeability, making it suitable for demanding industrial and fluid-handling environments.

This O-ring is well-suited for large-diameter sealing applications in industrial plumbing, HVAC chillers, process piping, hydraulic systems, and petroleum fluid handling. Its 70-durometer hardness (Hard rating) provides firm resistance to extrusion under moderate pressure. The fluoroelastomer material offers wide-spectrum chemical resistance and is particularly effective in contact with petroleum-based fluids, fuels, and high-temperature media. Plumbers, pipefitters, and industrial maintenance technicians typically install this part during flange makeup or equipment overhaul procedures.

Key Features

• Fluoroelastomer (Viton-type) compound with good resistance to petroleum products and aggressive chemicals
• Wide temperature service range: -15 degrees F to 400 degrees F
• 70 durometer (Hard) round cross-section for low compression set and extrusion resistance
• Low gas permeability — suitable for vacuum service and gas-containment applications
• Large-bore Dash 393 profile: 24-inch ID, 24.375-inch OD, 0.1875-inch cross-section
• Black color; sold individually (package quantity of 1)

Compatibility

Compatible with petroleum products and a wide spectrum of chemical media as noted by the manufacturer. Designed as a standard Dash 393 O-ring for large-bore static and dynamic sealing in industrial plumbing, process piping, hydraulic, and HVAC applications. Not FDA approved.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified industrial maintenance technician following applicable IPC and system-specific pressure ratings. Depressurize, de-energize, and fully drain the system before removing the existing O-ring or disassembling any flange or fitting. Inspect the gland and mating surfaces for nicks, corrosion, or contamination before seating the new O-ring. Do not roll or twist the O-ring during installation, and avoid using sharp tools that could nick the sealing surface.