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

Buna-N O-Ring | 1.397" ID x 3.460" OD x 0.258" CS | Aluminum 6061

Expert Overview

This industrial O-ring, crafted from durable Buna-N and featuring an Aluminum 6061 core, provides superior sealing for critical applications. Its precise dimensions ensure a secure fit and reliable performance.

StandardDIN 933
MaterialAluminum 6061
FinishBlack Oxide
GradeN/A
Inside Diameter1.397"
Outside Diameter3.460"
Cross Section0.258"

Detailed Engineering Specifications

Engineered for reliability and performance, this Buna-N O-ring boasts exceptional chemical resistance to oils, fuels, and many hydraulic fluids, making it a robust choice for demanding industrial environments. The Aluminum 6061 core provides structural integrity and thermal conductivity. With an inside diameter of 1.397 inches, an outside diameter of 3.460 inches, and a cross-section of 0.258 inches, it is designed for precise fitting in standard groove geometries, ensuring a leak-proof seal under moderate pressure and temperature ranges.

🧊 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. Inspect the groove and mating surfaces for cleanliness and absence of burrs or damage. 2. Lightly lubricate the O-ring with a compatible lubricant as per application requirements. 3. Carefully install the O-ring into the designated groove, ensuring it is seated evenly and without twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 the O-ring dry, leading to increased friction and potential damage during installation.Always use a compatible lubricant to ease installation and prevent premature wear.
Twisting the O-ring during installation, which can create leak paths and compromise the seal.Ensure the O-ring is installed straight and without any torsion in the groove.
Using the wrong lubricant, which can degrade the Buna-N material and lead to premature failure.Consult a chemical compatibility chart for Buna-N and select a lubricant suitable for the specific application environment.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fluid power assemblies
  • Automotive components
  • Industrial machinery seals

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents, ketones, esters, or chlorinated hydrocarbons.
  • Ensure operating temperature and pressure are within the specified limits for Buna-N material to prevent premature failure.

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 assemblies, Automotive components, Industrial machinery seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 1.397"CS = 0.258"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.