Value Collection ZMSCH70FDA221 O-ring Dash 221 Buna-n Fda

Product Description

The VALUE COLLECTION ZMSCH70FDA221 is a Dash 221 Buna-N (Nitrile Butadiene Rubber) O-ring with a round cross section, measuring 1.421 inches inside diameter, 1.687 inches outside diameter, and 0.125 inches thick. Rated at 70 durometer hardness, this O-ring is FDA approved and meets SAE and MIL-Spec standards. It is designed for static and dynamic sealing applications in fluid and pneumatic systems. HVAC technicians, plumbers, and industrial maintenance professionals install this type of O-ring where petroleum-based media compatibility and reliable compression set performance are required.

This O-ring is suited for residential and commercial sealing applications involving petroleum products, hydraulic fluids, oils, and fuels. Its operating temperature range of -40 degrees F to 250 degrees F makes it appropriate for a wide range of mechanical and fluid-handling systems. The FDA-approved white Buna-N formulation also makes it suitable for food-grade equipment and potable water system components where elastomer certification is required. Sold in packages of 10.

Key Features

• FDA approved white Buna-N compound suitable for food-grade and potable water applications
• Meets SAE and MIL-Spec standards for dimensional and material consistency
• 70 durometer hardness rating provides hard, reliable compression set resistance
• Excellent resistance to petroleum products, oils, and hydraulic fluids
• Good tear and abrasion resistance for dynamic sealing environments
• Wide service temperature range: -40 degrees F to 250 degrees F

Compatibility

Compatible with petroleum products and petroleum-based media. Designed as a Dash 221 standard O-ring replacement for applications requiring FDA-approved Buna-N elastomer. Note: Buna-N should not be used with ozone-generating environments, direct sunlight exposure, or electrical equipment that produces ozone.

Installation Notes

O-rings of this type are installed by licensed plumbers, HVAC technicians, and industrial mechanics. Depressurize and drain the system fully before replacing any O-ring in a fluid or pneumatic circuit. Inspect the mating groove for burrs, scoring, or debris before seating the new O-ring. Avoid twisting the O-ring during installation; a light coating of compatible lubricant aids proper seating and reduces the risk of damage.