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Buna-N Brass O-Ring - 0.825" ID x 4.113" OD

Expert Overview

This industrial Buna-N O-ring, featuring a brass construction, offers superior sealing capabilities in challenging operational conditions. Its precise dimensions ensure a reliable fit for critical fluid and gas containment.

StandardASTM A106
MaterialBrass
FinishZinc Plated
GradeN/A
Inside Diameter0.825"
Outside Diameter4.113"
Cross Section0.094"

Detailed Engineering Specifications

Designed for demanding industrial environments, this Buna-N O-ring is engineered for optimal performance in a wide range of fluid and gas applications. With an inside diameter of 0.825 inches, an outside diameter of 4.113 inches, and a precise 0.094-inch cross-section, it provides a robust seal against leaks. The Buna-N (Nitrile) material offers excellent resistance to petroleum-based oils, hydraulic fluids, and water, making it suitable for pneumatic and hydraulic systems, automotive applications, and general industrial sealing needs. The brass construction contributes to its durability and resistance to certain chemical environments.

🧊 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 mating surfaces are clean, dry, and free of debris. 2. Carefully place the O-ring into its designated groove, avoiding any stretching or twisting. 3. Assemble mating components, ensuring even pressure distribution to seat the O-ring properly.

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
Overtightening during assembly, which can cause excessive compression and premature failure.Follow recommended torque specifications for the mating hardware and ensure even pressure distribution.
Using the O-ring in a fluid or temperature range beyond its specified capabilities.Verify the chemical compatibility and operating temperature range of Buna-N material against the application's media.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Automotive Fuel Systems
  • General Industrial Sealing

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents, ketones, or esters.
  • Ensure the operating temperature remains within the recommended range for Buna-N (typically -40°F to +257°F / -40°C to +125°C).

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 Cylinders, Automotive Fuel Systems, General Industrial Sealing.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.825"CS = 0.094"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.