Value Collection ZMSCH70383 O-ring Dash 383 Nitrile Buna-n

Product Description

The VALUE COLLECTION ZMSCH70383 is a Dash 383 O-ring manufactured from Buna-N (Nitrile Butadiene Rubber), the most widely used elastomer in fluid sealing applications. It features a 14-inch inside diameter, a 14.375-inch outside diameter, and a 3/16-inch (0.1875-inch) round cross section. Shore hardness is rated at 70, placing it in the hard hardness range. This O-ring delivers excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. It is a standard sealing component installed by plumbers, pipefitters, hydraulic technicians, and mechanical trade professionals across a wide range of industrial and commercial systems.

This O-ring is suited for static and dynamic sealing applications where contact with petroleum products, oils, fuels, or hydraulic fluids is expected. Its large diameter makes it appropriate for pipe flanges, pump housings, valve bonnets, and large-bore cylinder end caps in commercial, industrial, and heavy mechanical service environments. Operating temperature range spans -40 degrees F to 250 degrees F, making it viable across most North American climate and process conditions. This item is sold in a package quantity of 5.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent petroleum product resistance
• Dash 383 standard sizing: 14-inch ID, 14.375-inch OD, 0.1875-inch cross section thickness
• Shore hardness of 70 (hard rating) for reliable compression and sealing force
• Operating range of -40 degrees F to 250 degrees F
• Round cross section for consistent groove seating and uniform load distribution
• Meets SAE and MIL-Spec standards

Compatibility

Compatible with petroleum products, hydraulic oils, fuels, and related fluids. Not FDA approved. Should not be stored in direct sunlight or near motors or electrical equipment that may generate ozone. Designed as a standard Dash 383 O-ring for use in any groove application calling for this dash number and Buna-N material.

Installation Notes

Installation is typically performed by plumbers, pipefitters, or hydraulic system technicians. Before installation, depressurize and drain the system completely and confirm the groove dimensions match the Dash 383 cross section. Lubricate the O-ring lightly with a compatible fluid or O-ring lubricant before seating to avoid nicking or rolling during assembly. Do not use petroleum-incompatible lubricants or expose the O-ring to ozone-generating equipment during storage or installation.