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Buna-N Brass Industrial O-Ring | 4.349" ID x 8.367" OD

Expert Overview

This industrial O-ring, constructed from high-performance Buna-N with a brass core, offers superior sealing capabilities. Its precise dimensions ensure a reliable fit in demanding applications.

StandardASTM A106
MaterialBrass
FinishPassivated
GradeN/A
Inside Diameter4.349"
Outside Diameter8.367"
Cross Section0.169"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring features a 4.349" inside diameter, an 8.367" outside diameter, and a 0.169" cross-section. The Buna-N (Nitrile) material provides excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide range of industrial environments. The integrated brass component enhances structural integrity and provides conductivity where required. This combination ensures robust performance in static and dynamic sealing applications, from general machinery to hydraulic systems.

🧊 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 of debris. 2. Carefully stretch the O-ring over the component, avoiding overstretching or using sharp tools. 3. Gently seat the O-ring into the groove, ensuring it is fully compressed and properly aligned.

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

Chemical Composition

Copper (Cu)60.0 - 63.0%
Zinc (Zn)Balance
Lead (Pb)2.5 - 3.7%

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
Using excessive force during installation, leading to nicks or tears in the O-ring.Apply lubrication compatible with Buna-N and gently guide the O-ring into place. Use a rounded tool if necessary, but avoid sharp edges.
Incorrect O-ring size, resulting in improper sealing or premature failure.Always verify the O-ring's inside diameter, outside diameter, and cross-section against the specified groove dimensions before installation.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive applications

⚠️ Engineering Warnings

  • Not suitable for use with ozone, ketones, or esters.
  • Ensure compatibility with the specific fluid or gas being sealed at the operating temperature and pressure.

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 Brass.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic equipment, Automotive applications.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.349"CS = 0.169"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.