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Buna-N Brass O-Ring: 6.212" ID, 7.064" OD, 0.204" CS

Expert Overview

This industrial Buna-N O-ring, housed within a brass fitting, offers reliable sealing for demanding applications. Its robust construction ensures excellent resistance to oils, fuels, and many chemicals, providing a durable solution for fluid containment.

StandardASME B18
MaterialBrass
FinishGalvanized
GradeN/A
Inside Diameter6.212"
Outside Diameter7.064"
Cross Section0.204"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this Buna-N O-ring features a precise inside diameter of 6.212 inches, an outside diameter of 7.064 inches, and a cross-section of 0.204 inches. Manufactured from Buna-N (Nitrile Butadiene Rubber), it exhibits superior resistance to petroleum-based oils, greases, hydraulic fluids, and water. The brass housing provides excellent corrosion resistance and mechanical support in moderate pressure environments, making it suitable for applications requiring chemical compatibility and structural 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 mating surfaces are clean, dry, and free from debris. 2. Carefully place the O-ring into its designated groove, ensuring it is seated evenly without twisting. 3. Assemble the components, applying light and consistent pressure to compress the O-ring to create a seal.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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
Overtightening during assembly, leading to O-ring extrusion or damage.Tighten fasteners to the manufacturer's recommended torque specifications to avoid over-compression.
Using the wrong O-ring material for the specific fluid or operating temperature.Verify the chemical compatibility and temperature range of Buna-N against the application's requirements before installation.

Common Applications

  • Hydraulic systems
  • Pneumatic actuators
  • Fuel and oil handling equipment

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents or ozone.
  • Avoid prolonged exposure to high temperatures exceeding the material's specified limits.

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 actuators, Fuel and oil handling equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.212"CS = 0.204"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.