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

3.153" ID Buna-N O-Ring, 5.331" OD, 0.260" CS - Aluminum 6061

Expert Overview

This industrial O-ring, crafted from Aluminum 6061, provides reliable sealing for critical applications. Its precise dimensions ensure a secure fit, preventing leaks in challenging operational conditions.

StandardISO 9001
MaterialAluminum 6061
FinishBlack Oxide
GradeN/A
Inside Diameter3.153"
Outside Diameter5.331"
Cross Section0.260"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this Buna-N O-ring boasts an Inside Diameter of 3.153 inches, an Outside Diameter of 5.331 inches, and a Cross Section of 0.260 inches. The robust Aluminum 6061 material offers excellent resistance to abrasion and moderate temperatures, making it suitable for a wide range of fluid and gas sealing applications in hydraulic systems, pneumatic equipment, and general industrial machinery. Its Shore A hardness ensures effective compression and dynamic sealing capabilities.

🧊 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 is clean, dry, and free of burrs or contaminants. 2. Lightly lubricate the O-ring and groove with a compatible lubricant. 3. Carefully install the O-ring into the groove, avoiding 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 / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening fasteners, which can crush the O-ring.Tighten fasteners to the manufacturer's recommended torque specifications to prevent O-ring damage.
Using incompatible lubricants or cleaning agents that degrade the Buna-N material.Consult a chemical compatibility chart to select lubricants and cleaning agents suitable for Buna-N.

Common Applications

  • Hydraulic Cylinder Seals
  • Pneumatic Actuator Seals
  • Fluid Power Systems

⚠️ Engineering Warnings

  • Not suitable for prolonged exposure to high temperatures or aggressive chemicals beyond Buna-N's rated limits.
  • Inspect O-ring regularly for signs of wear, cracking, or degradation 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 Cylinder Seals, Pneumatic Actuator Seals, Fluid Power Systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.153"CS = 0.260"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.