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Brass Buna-N O-Ring 8.225" ID x 8.335" OD x 0.108" CS

Expert Overview

This robust Buna-N O-ring, encased in a durable brass housing, provides superior sealing performance. Engineered to exact specifications, it ensures reliable containment in critical industrial applications requiring chemical resistance and broad temperature tolerance.

StandardASTM A106
MaterialBrass
FinishPlain
GradeN/A
Inside Diameter8.225"
Outside Diameter8.335"
Cross Section0.108"

Detailed Engineering Specifications

Specified by design engineers worldwide, this industrial O-ring features a precise inside diameter of 8.225 inches, an outside diameter of 8.335 inches, and a cross-section of 0.108 inches. The Buna-N (Nitrile Butadiene Rubber) material offers excellent resistance to oils, fuels, hydraulic fluids, and a wide range of chemicals, making it suitable for high-pressure systems. The brass housing provides structural integrity and corrosion resistance in aggressive environments. Operating temperature range typically spans from -40°F to +212°F (-40°C to +100°C).

🧊 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 both sealing surfaces are clean, dry, and free from debris. 2. Carefully place the O-ring into its designated groove, ensuring it is seated evenly without any twists or kinks. 3. Assemble the components, applying light and consistent pressure to achieve a proper seal.

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 / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening fittingsTighten fittings to the manufacturer's recommended torque specification to avoid over-compression and damage to the O-ring.
Using incorrect lubricantApply only approved lubricants compatible with Buna-N and the service fluid to prevent premature degradation of the O-ring.
Installing a twisted O-ringInspect the O-ring for twists before installation and ensure it is laid flat and evenly within the groove.

Common Applications

  • Hydraulic and pneumatic systems
  • Automotive fuel and oil systems
  • Industrial pumps and valves

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents, ketones, or esters.
  • Avoid exposure to ozone and UV radiation, which can degrade Buna-N material over time.

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 and pneumatic systems, Automotive fuel and oil systems, Industrial pumps and valves.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.225"CS = 0.108"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.