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Industrial Buna-N O-Ring | 3.957" ID | Aluminum 6061

Expert Overview

This industrial O-ring, crafted from robust Aluminum 6061, ensures reliable sealing in demanding applications. Its precise dimensions provide a secure fit and excellent performance.

StandardASTM A106
MaterialAluminum 6061
FinishPassivated
GradeN/A
Inside Diameter3.957"
Outside Diameter8.352"
Cross Section0.120"

Detailed Engineering Specifications

Specified by design engineers worldwide, this Buna-N O-ring is engineered for exceptional sealing integrity. Featuring an inside diameter of 3.957 inches, an outside diameter of 8.352 inches, and a cross-section of 0.120 inches, it offers a precise fit for critical applications. The Buna-N (Nitrile) material provides excellent resistance to oils, fuels, and hydraulic fluids, making it suitable for a wide range of industrial environments. The Aluminum 6061 construction ensures compatibility with specific housing materials and offers good corrosion resistance in many operating conditions.

🧊 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 mating groove surfaces are clean, dry, and free from debris or damage. 2. Carefully stretch the O-ring over the smaller diameter of the component, ensuring it seats evenly within the groove. 3. Gently rotate the O-ring to confirm it is properly seated and not twisted within the groove.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

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
Installing a twisted O-ring.Visually inspect the O-ring after seating to ensure it lies flat and is not twisted, which can lead to leaks.
Using excessive force during installation.Apply gentle, even pressure. Overstretching or using sharp tools can nick or cut the O-ring, compromising its seal.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fluid power transmission
  • Automotive seals
  • Industrial machinery

⚠️ Engineering Warnings

  • Ensure compatibility with the specific fluid media and operating temperature range for Buna-N.
  • Do not use in applications involving strong oxidizing agents or ozone.

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, Fluid power transmission, Automotive seals, Industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.957"CS = 0.120"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.