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

Buna-N O-Ring | 3.971" ID x 3.812" OD | Aluminum 6061

Expert Overview

This industrial O-ring, crafted from resilient Buna-N (Nitrile) housed within an Aluminum 6061 carrier, ensures superior sealing performance in demanding operational conditions. Engineered for durability and chemical resistance.

StandardDIN 933
MaterialAluminum 6061
FinishGalvanized
GradeN/A
Inside Diameter3.971"
Outside Diameter3.812"
Cross Section0.180"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this Buna-N O-ring features precise dimensions of 3.971" inside diameter, 3.812" outside diameter, and a 0.180" cross-section. The Buna-N material offers excellent resistance to oils, fuels, and many hydraulic fluids, making it ideal for a wide array of industrial sealing challenges. The integrated Aluminum 6061 component provides structural integrity and compatibility with specific mounting or housing requirements, ensuring long-term reliability in high-pressure and extreme temperature environments.

🧊 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 and free of debris. 2. Carefully compress the O-ring to fit within the groove, avoiding any sharp tools that could nick or damage the sealing surface. 3. Verify the O-ring is seated evenly and without twists before assembling mating components.

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using excessive force during installation, leading to O-ring deformation or damage.Apply controlled pressure and utilize appropriate installation tools if necessary to prevent stretching or tearing.
Installing the O-ring into a contaminated or damaged groove.Thoroughly inspect and clean the sealing groove prior to O-ring installation to ensure a proper seal and prevent premature failure.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel and oil lines
  • Chemical processing equipment

⚠️ Engineering Warnings

  • Not suitable for exposure to ozone, strong acids, or polar solvents.
  • Ensure compatibility with specific media and operating temperatures before deployment.

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, Chemical processing equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.971"CS = 0.180"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.