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Buna-N Brass O-Ring: 2.828" ID x 2.558" OD x 0.243" CS

Expert Overview

This industrial O-ring features a robust Buna-N sealing element integrated with a solid brass core for enhanced structural integrity and specific compatibility needs in demanding environments.

StandardASTM A106
MaterialBrass
FinishGalvanized
GradeN/A
Inside Diameter2.828"
Outside Diameter2.558"
Cross Section0.243"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this Buna-N O-ring boasts an Inside Diameter of 2.828 inches, an Outside Diameter of 2.558 inches, and a Cross Section of 0.243 inches. The Buna-N (Nitrile Butadiene Rubber) material provides excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide range of operational temperatures. The brass core offers superior dimensional stability and chemical inertness in specific corrosive media, while also providing grounding capabilities where required. Its precise dimensions ensure a secure and leak-free seal within appropriate groove configurations.

🧊 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 mating groove surfaces are clean, dry, and free from burrs or defects. 2. Carefully place the O-ring into the designated groove, avoiding excessive stretching or twisting. 3. Assemble the mating component, ensuring even pressure distribution across the O-ring's surface.

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overstretching the O-ring during installation.Gently guide the O-ring into the groove without exceeding its elastic limits to prevent premature failure and leakage.
Installing on a damaged or dirty groove surface.Thoroughly inspect and clean the groove before installation to ensure proper sealing and prevent damage to the O-ring.

Common Applications

  • Hydraulic systems requiring oil resistance
  • Fuel line connections
  • Industrial pumps and valves

⚠️ Engineering Warnings

  • Not suitable for applications involving ozone, UV, or weathering.
  • Brass core may react with strong oxidizing acids; verify chemical compatibility.

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 requiring oil resistance, Fuel line connections, Industrial pumps and valves.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.828"CS = 0.243"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.