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

Buna-N Brass O-Ring: 5.333" ID x 8.617" OD x 0.229" CS

Expert Overview

This industrial O-ring, crafted from durable Buna-N with brass construction, ensures reliable sealing in robust applications. Its precise dimensions provide superior performance and longevity.

StandardASTM A106
MaterialBrass
FinishBlack Oxide
GradeN/A
Inside Diameter5.333"
Outside Diameter8.617"
Cross Section0.229"

Detailed Engineering Specifications

Designed for demanding industrial environments, this Buna-N O-ring features an inside diameter of 5.333 inches, an outside diameter of 8.617 inches, and a cross-section of 0.229 inches. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to oils, fuels, and hydraulic fluids, making it ideal for a wide range of sealing applications. The brass construction of the O-ring body provides inherent corrosion resistance and dimensional stability, further enhancing its suitability for challenging operational conditions. This combination of material properties ensures a tight, leak-proof seal under moderate to high pressures and temperatures.

🧊 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 mating surfaces are clean and free of debris. 2. Carefully position the O-ring within the designated groove, avoiding stretching or twisting. 3. Assemble mating components, ensuring even pressure distribution to maintain seal integrity.

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
O-ring is stretched during installation, leading to premature failure.Do not stretch the O-ring more than 5% of its free length during installation. Use appropriate tools to assist placement.
Contaminated mating surfaces lead to leaks.Thoroughly clean all mating surfaces and grooves before installing the O-ring. Inspect for any damage or imperfections.

Common Applications

  • Hydraulic systems
  • Pneumatic assemblies
  • Fluid power equipment

⚠️ Engineering Warnings

  • Not suitable for applications involving strong oxidizing agents or ozone.
  • Avoid prolonged exposure to direct sunlight or UV radiation.

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 assemblies, Fluid power equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.333"CS = 0.229"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.