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Black rectangular Buna-N O-rings in a pack of 25

Zoro Select

Zoro Select Square Profile Buna-N O-Ring Dash 225 PK25

SKU CH-VFXG-SN9HP

Pack of 25 rectangular Buna-N O-rings, dash 225, 70A durometer, rated −40 °F to 250 °F

  • Buna-N material resists oils and fuels across a -40 to 250 °F range
  • Square profile cross-section maintains seal integrity under dynamic pressure changes
  • Metal-detectable construction allows quick identification in food or pharmaceutical lines
  • 25-piece pack supplies multiple replacements for dash 225 groove dimensions
  • Medium-hard 70A durometer balances compression set resistance with easy installation

Zoro Select Buna-N O-Ring Pack

This pack contains twenty-five square-profile Buna-N O-rings in Dash 225 size. They are designed for static sealing in hydraulic and pneumatic systems where a rectangular cross-section is required. Maintenance teams and original-equipment assemblers use them for reliable fluid containment.

Temperature and Pressure Limits

The material operates from minus forty degrees Fahrenheit to two hundred fifty degrees Fahrenheit. The medium-hard 70A durometer resists extrusion in moderate-pressure applications but is not rated for extreme dynamic loads. Metal-detectable construction aids contamination control in food and pharmaceutical lines.

Critical Dimensions for Fit

Actual inside diameter is 1.8 inches, actual width is .139 inches, and actual outside diameter is 2.137 inches. Verify these three figures against your groove specifications before ordering; an incorrect dash number will not seal properly.

Highlights

  • Buna-N material resists oils and fuels across a -40 to 250 °F range
  • Square profile cross-section maintains seal integrity under dynamic pressure changes
  • Metal-detectable construction allows quick identification in food or pharmaceutical lines
  • 25-piece pack supplies multiple replacements for dash 225 groove dimensions
  • Medium-hard 70A durometer balances compression set resistance with easy installation

Specifications

BrandZORO SELECT

Questions about this item

Should I choose the pack of 25 or a different quantity?

The listing is for a single pack of 25 O-rings. No other pack sizes appear in the data.

What does the 70A durometer mean once the ring is installed?

It indicates a medium-hard Buna-N material that resists extrusion and holds its rectangular cross-section under pressure from -40 to 250 °F.

Is the Buna-N material compatible with standard hydraulic fluid specifications?

Buna-N works with most petroleum-based hydraulic oils and fuels, but the product is not FDA compliant and is not X-ray detectable.

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