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Buna-N Brass O-Ring - 3.916" ID x 2.809" OD x 0.178" CS

Expert Overview

This industrial O-ring, crafted from Buna-N with a Brass fitting, offers robust sealing capabilities. Engineered for precision and durability, it ensures reliable performance in critical applications.

StandardASME B18
MaterialBrass
FinishZinc Plated
GradeN/A
Inside Diameter3.916"
Outside Diameter2.809"
Cross Section0.178"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is designed for superior sealing in demanding environments. Featuring an inside diameter of 3.916 inches, an outside diameter of 2.809 inches, and a precise cross-section of 0.178 inches, it provides a secure fit. The Buna-N material offers excellent resistance to oils, fuels, and many hydraulic fluids, while the Brass fitting ensures compatibility and durability in fluid systems. Its construction makes it ideal for static and dynamic sealing applications where chemical resistance and dimensional stability are paramount, such as in hydraulic systems, pneumatic assemblies, and fluid transfer equipment.

🧊 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 is clean, free of debris, and properly dimensioned for the O-ring. 2. Lightly lubricate the O-ring and groove with a compatible lubricant to prevent damage during installation. 3. Carefully install the O-ring into the groove, avoiding any stretching or twisting that could compromise its 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
Using excessive force during installation, leading to O-ring nicks or cuts.Apply gentle, even pressure and ensure proper lubrication to facilitate smooth installation.
Incorrect O-ring size selection for the groove, resulting in leakage or extrusion.Verify the groove dimensions and O-ring specifications meticulously before installation.

Common Applications

  • Hydraulic Systems
  • Pneumatic Assemblies
  • Fluid Transfer Equipment

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents or polar solvents.
  • Ensure material compatibility with the specific fluid or gas being sealed.

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 Transfer Equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.916"CS = 0.178"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.