Value Collection ZMSCH70FDA328 O-ring Dash 328 Buna-n Fda

Product Description

The VALUE COLLECTION ZMSCH70FDA328 is a Dash 328 Buna-N (nitrile butadiene rubber) O-ring with FDA approval, sized at 1.875 inches inside diameter, 2.25 inches outside diameter, and 0.1875 inches (3/16 inches) thick. It features a round cross section and a 70 Shore A hardness rating. Buna-N is the most widely used O-ring elastomer in the trade, offering excellent resistance to petroleum-based fluids, strong compression set performance, and solid tear and abrasion resistance. This O-ring is sold in a package quantity of 10. Licensed plumbers, HVAC technicians, and mechanical contractors install this type of seal across a broad range of fluid-system applications.

This O-ring is well suited for use in hydraulic systems, fuel systems, pneumatic assemblies, and plumbing connections where petroleum-based media is present. Its FDA-approved white Buna-N compound also makes it appropriate for food-processing and potable-water-adjacent equipment where regulatory compliance is required. It meets SAE and MIL-Spec standards, making it appropriate for both commercial mechanical and light industrial service. The round cross section ensures consistent seating in standard O-ring grooves sized for the Dash 328 designation.

Key Features

• Dash 328 sizing: 1.875 inches ID, 2.25 inches OD, 0.1875 inches cross-section thickness
• FDA-approved white Buna-N compound suitable for food-processing and regulated fluid systems
• 70 Shore A hardness provides firm sealing with good compression recovery
• Rated for service from -40 degrees F to 250 degrees F
• Excellent resistance to petroleum products, hydraulic fluids, and fuels
• Meets SAE and MIL-Spec standards
• Round cross section for consistent groove fit and reliable static or dynamic sealing

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Suitable for use in any system or assembly that accepts a standard Dash 328 O-ring groove profile. Not recommended for exposure to ozone, direct sunlight during storage, or near motors and electrical equipment that generate ozone.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or mechanical contractors during system assembly or seal replacement. Shut off system pressure and drain fluid before removing or installing O-rings. Lightly lubricate the O-ring with a compatible fluid or grease before seating to prevent pinching or tearing during assembly. Do not store unused O-rings in direct sunlight or near ozone-generating equipment, as ozone degrades Buna-N over time.