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

Buna-N O-Ring | 4.747" ID | 7.888" OD | Aluminum 6061

Expert Overview

This industrial O-ring features a Buna-N elastomer with exceptional oil and fuel resistance, precisely engineered within an Aluminum 6061 housing. It ensures reliable sealing in critical applications.

StandardISO 9001
MaterialAluminum 6061
FinishPlain
GradeN/A
Inside Diameter4.747"
Outside Diameter7.888"
Cross Section0.078"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this Buna-N O-ring boasts an Inside Diameter of 4.747 inches, an Outside Diameter of 7.888 inches, and a precise Cross Section of 0.078 inches. The Buna-N material offers excellent resistance to petroleum-based oils, fuels, and hydraulic fluids, making it suitable for a wide range of operating temperatures. The Aluminum 6061 housing provides structural integrity and is compatible with many fluid systems, ensuring a durable and effective seal against leaks in demanding industrial machinery and equipment.

🧊 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 sealing groove is clean, dry, and free from debris or damage. 2. Carefully install the O-ring into the groove, avoiding any stretching or twisting. 3. Apply a light coating of compatible lubricant to the O-ring and the mating surface before assembly to facilitate proper seating and prevent extrusion.

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 / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Stretching the O-ring excessively during installation.Install the O-ring gently, allowing it to sit naturally within the groove without undue tension. Consider using an O-ring installation tool for larger sizes.
Using incompatible lubricants that degrade Buna-N.Always verify that the lubricant is specifically rated for Buna-N (Nitrile) and the operating environment to prevent material degradation and premature failure.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Fuel dispensing systems

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing acids, esters, ketones, or chlorinated hydrocarbons.
  • Ensure operating temperature remains within the recommended range for Buna-N (typically -30°F to +250°F) to maintain sealing integrity.

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 equipment, Fuel dispensing systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.747"CS = 0.078"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.