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Buna-N Brass Industrial O-Ring | 2.776" ID x 9.945" OD

Expert Overview

This high-quality Buna-N industrial O-ring, constructed with a brass component for enhanced durability, provides superior sealing in demanding applications. Its precise dimensions ensure a reliable fit and exceptional performance.

StandardISO 9001
MaterialBrass
FinishPassivated
GradeN/A
Inside Diameter2.776"
Outside Diameter9.945"
Cross Section0.194"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring features a robust brass construction, offering excellent resistance to oils, fuels, and many hydraulic fluids. With an Inside Diameter of 2.776 inches, an Outside Diameter of 9.945 inches, and a Cross Section of 0.194 inches, it is engineered for precise sealing in dynamic and static applications. The Buna-N material ensures a wide operating temperature range and good mechanical properties, making it suitable for general-purpose sealing in automotive, manufacturing, and 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 groove or mating surfaces are clean and free from debris. 2. Carefully install the O-ring into the designated groove, avoiding stretching or twisting. 3. Verify proper seating and compression of the O-ring before assembly.

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

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
Stretching the O-ring excessively during installation.Install the O-ring without undue stretching to maintain its sealing integrity and lifespan.
Allowing debris or contaminants to enter the sealing groove.Thoroughly clean both the O-ring and the sealing groove before installation to prevent leaks and premature failure.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Automotive fluid sealing
  • General industrial machinery

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing acids or ketones.
  • Avoid prolonged exposure to direct sunlight or ozone.

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 systems, Automotive fluid sealing, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.776"CS = 0.194"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.