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Buna-N Brass O-Ring 4.388" ID x 8.289" OD x 0.092" CS

Expert Overview

This industrial Buna-N O-ring, with a brass fitting, ensures robust sealing in low-pressure fluid and pneumatic applications. Designed for consistent performance and durability.

StandardASTM A106
MaterialBrass
FinishGalvanized
GradeN/A
Inside Diameter4.388"
Outside Diameter8.289"
Cross Section0.092"

Detailed Engineering Specifications

Engineered for reliability and performance, this Buna-N O-ring features a 4.388" inside diameter, an 8.289" outside diameter, and a 0.092" cross-section. The Buna-N (Nitrile) material provides excellent resistance to oils, fuels, and hydraulic fluids, making it suitable for a broad range of industrial environments. While the brass element is not a sealing material itself, it indicates the O-ring may be part of a specific assembly or component requiring brass compatibility. Optimal for static and low-dynamic seal applications where chemical resistance and cost-effectiveness are paramount.

🧊 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 sealing groove is clean, free of debris, and undamaged. 2. Lubricate the O-ring and groove with a compatible lubricant to prevent tearing and facilitate installation. 3. Carefully place the O-ring into the groove, avoiding stretching or twisting, and ensure it is seated evenly.

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
Installing a dry O-ring.Always lubricate the O-ring and groove with a compatible lubricant before installation to prevent damage.
Stretching or twisting the O-ring during installation.Handle the O-ring gently and ensure it sits flat within the groove without deformation.

Common Applications

  • Low-pressure hydraulic systems
  • Pneumatic cylinders and actuators
  • Fluid transfer equipment

⚠️ Engineering Warnings

  • Not suitable for high-temperature applications above 212°F (100°C).
  • Avoid exposure to ozone, strong acids, and polar solvents, which can degrade Buna-N.

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: Low-pressure hydraulic systems, Pneumatic cylinders and actuators, Fluid transfer equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.388"CS = 0.092"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.