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

Buna-N O-Ring, Brass, 5.774" ID x 5.188" OD

Expert Overview

This industrial-grade O-ring, constructed from durable Buna-N with a brass material specification, provides exceptional sealing performance. Its precise dimensions ensure a reliable fit in critical applications.

StandardASTM A106
MaterialBrass
FinishAnodized
GradeN/A
Inside Diameter5.774"
Outside Diameter5.188"
Cross Section0.139"

Detailed Engineering Specifications

Specified by design engineers worldwide, this Buna-N O-ring features an inside diameter of 5.774 inches, an outside diameter of 5.188 inches, and a cross-section of 0.139 inches. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to oils, fuels, and many hydraulic fluids, making it ideal for general-purpose sealing in moderate temperature and pressure applications. The brass specification indicates compliance with a particular standard or material requirement for the housing or component it interfaces with, ensuring system compatibility and integrity.

🧊 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, free of debris, and properly dimensioned. 2. Carefully lubricate the O-ring with a compatible lubricant to prevent tearing during installation. 3. Gently insert the O-ring into the groove, ensuring it is seated evenly without twisting.

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 O-ring damage.Apply moderate pressure and use appropriate tools or lubrication to aid installation.
Installing the O-ring into a contaminated or damaged groove.Thoroughly inspect and clean the groove before proceeding with O-ring installation.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive components

⚠️ Engineering Warnings

  • Not suitable for ozone, UV, or weathering applications.
  • Avoid exposure to strong acids, esters, and ketones, which can degrade Buna-N.

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 components.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.774"CS = 0.139"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.