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

Buna-N Aluminum O-Ring 5.742" ID x 8.202" OD

Expert Overview

This industrial Buna-N O-ring, precision-engineered from Aluminum 6061, offers exceptional sealing performance. Its robust construction ensures reliable operation in demanding environments, providing a secure barrier against leaks.

StandardISO 9001
MaterialAluminum 6061
FinishGalvanized
GradeN/A
Inside Diameter5.742"
Outside Diameter8.202"
Cross Section0.121"

Detailed Engineering Specifications

Manufactured under strict quality controls, this industrial O-ring features a precise Inside Diameter of 5.742 inches and an Outside Diameter of 8.202 inches, with a consistent Cross Section of 0.121 inches. The Buna-N (Nitrile) elastomer provides excellent resistance to oils, fuels, and hydraulic fluids, while the Aluminum 6061 housing offers good corrosion resistance and moderate strength. This combination makes it suitable for a wide range of static and dynamic sealing applications where fluid compatibility and moderate environmental 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 mating surfaces are clean, dry, and free from debris. 2. Carefully lubricate the O-ring and groove with a compatible lubricant if recommended for the application. 3. Gently insert the O-ring into its designated groove, avoiding excessive stretching or twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

Mechanical Properties

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

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overstretching the O-ring during installation.Install the O-ring without excessive tension; ensure it fits snugly without being pulled beyond its elastic limit.
Using incompatible lubricants or cleaning agents.Always consult chemical compatibility charts to select lubricants and cleaning agents that do not degrade Buna-N or Aluminum 6061.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel and oil lines

⚠️ Engineering Warnings

  • Not recommended for high-temperature applications exceeding Buna-N's service range.
  • Avoid exposure to strong oxidizing agents and certain aromatic hydrocarbons.

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 Aluminum 6061.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic cylinders, Fuel and oil lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.742"CS = 0.121"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.