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Buna-N Industrial O-Ring | 3.639" ID x 5.579" OD

Expert Overview

Engineered for demanding industrial environments, this Buna-N O-ring offers superior sealing performance. Its robust construction ensures reliability in challenging conditions, preventing leaks and maintaining system integrity.

StandardASTM A106
MaterialNylon
FinishAnodized
GradeN/A
Inside Diameter3.639"
Outside Diameter5.579"
Cross Section0.076"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this industrial O-ring features a precise Inside Diameter of 3.639 inches, an Outside Diameter of 5.579 inches, and a Cross Section of 0.076 inches. Fabricated from durable Buna-N (Nitrile) with a nylon reinforcement, it exhibits excellent resistance to oils, fuels, and many hydraulic fluids, while the nylon component enhances its mechanical strength and abrasion resistance. This makes it ideal for sealing in pneumatic and hydraulic systems, automotive components, and general industrial machinery where moderate to high pressures and chemical exposure are present.

🧊 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 sealing surfaces are clean, dry, and free from burrs or debris. 2. Lightly lubricate the O-ring with a compatible lubricant to prevent damage during installation. 3. Carefully place the O-ring into its designated groove, ensuring it is seated evenly without twisting.

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 / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using excessive force during installation.Apply gentle, even pressure. If resistance is met, re-check surface cleanliness and lubrication.
Using incompatible lubricants.Consult the Buna-N chemical resistance chart to select a lubricant that will not degrade the O-ring material.

Common Applications

  • Hydraulic Systems
  • Pneumatic Actuators
  • Fuel Lines
  • Automotive Sealing
  • General Machinery

⚠️ Engineering Warnings

  • Not suitable for high-temperature applications exceeding 250°F (121°C).
  • Avoid exposure to strong oxidizing agents, ozone, and certain esters/ketones.

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 Actuators, Fuel Lines, Automotive Sealing, General Machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.639"CS = 0.076"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.