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Buna-N Brass O-Ring - 4.237" ID x 2.068" OD x 0.095" CS

Expert Overview

This industrial O-ring, crafted from durable Buna-N with a brass fitting, ensures exceptional sealing performance. Its precise dimensions provide a secure fit for critical applications.

StandardDIN 933
MaterialBrass
FinishPlain
GradeN/A
Inside Diameter4.237"
Outside Diameter2.068"
Cross Section0.095"

Detailed Engineering Specifications

Manufactured under strict quality controls, this Buna-N O-ring features an inside diameter of 4.237", an outside diameter of 2.068", and a cross-section of 0.095". Buna-N (Nitrile) offers excellent resistance to oils, fuels, and many hydraulic fluids, making it ideal for applications involving petroleum-based products. The brass component provides corrosion resistance and material compatibility in specific environments. This combination ensures reliable sealing and longevity in moderate temperature and pressure ranges.

🧊 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. Clean both mating surfaces and the O-ring thoroughly. 2. Apply a thin layer of compatible lubricant to the O-ring and the groove. 3. Carefully install the O-ring into the designated groove, ensuring it is seated without twisting or pinching.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 the wrong lubricant, which can degrade Buna-N.Always consult compatibility charts for lubricants suitable for Buna-N seals.
Over-stretching or twisting the O-ring during installation.Handle the O-ring with care and ensure it sits flat within the groove.

Common Applications

  • Hydraulic systems
  • Fuel lines
  • General industrial machinery

⚠️ Engineering Warnings

  • Not suitable for exposure to ozone, ketones, or esters.
  • Avoid use in applications with extreme temperatures exceeding its rated range.

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, Fuel lines, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.237"CS = 0.095"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.