Home > Sealing > Industrial O-Ring, Buna-N

Buna-N Brass O-Ring 2.165" ID x 0.710" OD x 0.086" CS

Expert Overview

This industrial-grade O-ring features a durable Buna-N elastomer and a brass fitting, engineered for reliable sealing in demanding applications. Its precise dimensions ensure a secure fit and effective barrier against leaks.

StandardASME B18
MaterialBrass
FinishPlain
GradeN/A
Inside Diameter2.165"
Outside Diameter0.710"
Cross Section0.086"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this Buna-N O-ring boasts a 2.165" inside diameter, 0.710" outside diameter, and a 0.086" cross-section. Buna-N (Nitrile) offers excellent resistance to oils, fuels, and hydraulic fluids, making it suitable for a wide range of industrial fluid power systems and general-purpose sealing applications where chemical compatibility and moderate temperature resistance are critical.

🧊 Download 3D CAD Model (.STEP)

Verified Global OEM Partners

This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.

TrelleborgEst. 1905
Sweden🇸🇪
"Engineered polymer solutions."
Market Rank
🏆 #1 Engineered Polymers
Industry Approvals
🚀 Aerospace & Subsea Approved
Warranty & Support
🛡️ High-Performance Guarantee
Green Manufacturing
🌱 Blue Dimension ESG
Certified:ISO 9001, ISO 14001
GarlockEst. 1887
USA🇺🇸
"High-performance fluid sealing."
Market Rank
🏆 Premium Fluid Sealing Leader
Industry Approvals
🚀 Nuclear & Pharma Approved
Warranty & Support
🛡️ Zero-Leak Guarantee
Green Manufacturing
🌱 Sustainable Materials
Certified:ISO 9001, FDA, NSF
FreudenbergEst. 1849
Germany🇩🇪
"Global sealing technologies."
Market Rank
🏆 Top Global Sealing Tech
Industry Approvals
🚀 Audi & Mercedes OEM
Warranty & Support
🛡️ Global Engineering Support
Green Manufacturing
🌱 Climate Neutral 2045
Certified:IATF 16949, ISO 14001

Certifications & Compliance

RoHS Compliant:Yes
REACH Compliant:Yes
Material Traceability:Available on Request
DFARS Compliant:N/A

Installation Procedure

1. Ensure the groove is clean and free of debris. 2. Carefully stretch the O-ring over the fitting, avoiding excessive force. 3. Seat the O-ring squarely within its groove to prevent twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Chemical Composition

Copper (Cu)60.0 - 63.0%
Zinc (Zn)Balance
Lead (Pb)2.5 - 3.7%

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°C)
Thermal Expansion
Typical for Material Class

Weight Reference Table

Size / TypeEst. Weight (lbs/100)Shipping Weight (kg)
StandardVaries by dimensionContact Sales

Corrosion Resistance Guide

EnvironmentRating
Indoor / DryExcellent
Outdoor / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Stretching the O-ring too much during installation.Gently flex and guide the O-ring into the groove, minimizing elongation to prevent premature failure.
Installing the O-ring into a dirty or damaged groove.Thoroughly clean and inspect the groove for any imperfections before O-ring installation.

Common Applications

  • Hydraulic cylinders and pumps
  • Pneumatic systems
  • Fuel and oil handling equipment

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents or ozone.
  • Service temperature range for Buna-N is typically -40°F to 257°F (-40°C to 125°C).

Alternative Products to Consider

Premium Sealing equivalentHigher corrosion resistance (316 SS)
Economy Sealing optionLower cost for non-critical indoor applications

Frequently Asked Questions

Q: What is the Industrial O-Ring, Buna-N made from?

A: This Industrial O-Ring, Buna-N is manufactured from Brass.

Q: What are the main applications?

A: Hydraulic cylinders and pumps, Pneumatic systems, Fuel and oil handling equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.165"CS = 0.086"SPECIFICATIONSSize: -214

Torque Specifications

⚡ UNIT CONVERTER

Conversion factor: 1 ft-lb ≈ 1.356 Nm

Verified Compatibility

StatusMating ComponentStandardTorque SpecEngineering Notes
No verified compatibility data found for this component.