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Industrial O-Ring, Buna-N, 9.057" OD, 3.909" ID

Expert Overview

This industrial O-ring, crafted from durable Buna-N, offers exceptional sealing performance. Engineered with precision for reliability, it's ideal for a wide range of demanding fluid and gas applications.

StandardASTM A106
MaterialNylon
FinishGalvanized
GradeN/A
Inside Diameter3.909"
Outside Diameter9.057"
Cross Section0.146"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this Buna-N O-ring features an inside diameter of 3.909 inches, an outside diameter of 9.057 inches, and a cross-section of 0.146 inches. Buna-N (Nitrile) rubber is selected for its excellent resistance to petroleum-based oils, fuels, and hydraulic fluids, as well as good abrasion and tear resistance. This makes it a cost-effective and reliable choice for general-purpose sealing in static and dynamic applications where exposure to these media is common. Operating temperature range is typically -40°F to +257°F (-40°C to +125°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 mating groove surfaces are clean and free of debris. 2. Lubricate the O-ring and groove with a compatible lubricant if necessary. 3. Carefully install the O-ring into the groove, avoiding any twisting or stretching.

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

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 an O-ring with incorrect dimensions for the groove.Always verify the O-ring's inside diameter, outside diameter, and cross-section against the groove's design specifications.
Over-stretching or twisting the O-ring during installation.Gently roll or push the O-ring into the groove, ensuring it seats evenly without distortion.
Installing in an incompatible chemical environment.Confirm that the Buna-N material is resistant to the specific fluids or gases it will be exposed to.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive fluid seals
  • Industrial machinery

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents, ketones, esters, or chlorinated hydrocarbons.
  • Ensure operating temperatures remain within the material's specified range to maintain seal integrity.

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 Nylon.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic equipment, Automotive fluid seals, Industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.909"CS = 0.146"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.