Value Collection ZMSCH70FDA218 O-ring Dash 218 Buna-n Fda

Product Description

The VALUE COLLECTION ZMSCH70FDA218 is a Dash 218 O-ring made from Buna-N (Nitrile Butadiene Rubber) with a round cross section, designed for static and dynamic sealing applications across plumbing, HVAC, and fluid-handling systems. With an inside diameter of 1.234 inches, an outside diameter of 1.5 inches, and a thickness of 0.125 inches, this O-ring meets SAE and MIL-Spec standards. The compound carries FDA approval and is rated for a working temperature range of -40 degrees F to 250 degrees F. A 70 durometer hardness rating provides a firm seal with reliable compression set resistance. Each package contains 10 O-rings.

This O-ring is suited for use with petroleum-based fluids and lubricants, making it a standard choice for hydraulic fittings, fuel system components, pump housings, refrigerant-side connections, and general plumbing seal points. The Dash 218 sizing is a widely recognized AS568 standard dimension, commonly encountered in residential and light commercial HVAC equipment, plumbing valves, and industrial fluid systems. FDA approval makes it appropriate for food-grade or sanitary fluid applications where compliance is required. Licensed plumbers, HVAC technicians, and maintenance professionals regularly stock this size for field repairs.

Key Features

• Buna-N (Nitrile) compound with excellent resistance to petroleum products, oils, and fuels
• FDA approved formulation suitable for food-grade and sanitary applications
• 70 durometer hardness for firm sealing with strong compression set resistance
• Operating temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards for dimensional and material consistency
• Round cross section, Dash 218 sizing per AS568 standard dimensions

Compatibility

Compatible with petroleum products, hydraulic oils, and fuels. Designed as a standard Dash 218 replacement O-ring for use in plumbing valves, HVAC fittings, hydraulic assemblies, pump housings, and other fluid-handling components requiring a 1.234-inch ID seal. Not recommended for use with ozone, strong acids, ketones, or esters. Store away from direct sunlight, motors, and electrical equipment that may generate ozone.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system technicians. Always depressurize and shut off the fluid supply to the system before removing the old O-ring or installing a replacement. Lightly lubricate the O-ring with a compatible lubricant prior to seating to reduce the risk of tearing during assembly. Do not use petroleum-based lubricants if the application fluid is incompatible with such compounds.