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Industrial Buna-N O-Ring | 4.128" ID x 2.727" OD

Expert Overview

Engineered for reliability, this industrial Buna-N O-ring offers superior sealing performance. Its robust construction ensures integrity in critical applications, preventing leaks and contamination.

StandardISO 9001
MaterialNylon
FinishAnodized
GradeN/A
Inside Diameter4.128"
Outside Diameter2.727"
Cross Section0.222"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring boasts a precise inside diameter of 4.128 inches and an outside diameter of 2.727 inches, with a standard cross-section of 0.222 inches. Crafted from Nylon-reinforced Buna-N, it provides excellent resistance to oils, fuels, hydraulic fluids, and many solvents, making it ideal for a wide range of demanding industrial environments. Its durable composition ensures long-term sealing integrity under moderate pressure and temperature fluctuations.

🧊 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 and free of debris. 2. Carefully lubricate the O-ring with a compatible lubricant. 3. Gently place the O-ring into the groove, ensuring it is not twisted or stretched excessively.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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 the wrong lubricant.Always use a lubricant compatible with Buna-N and the specific application's media.
Overstretching the O-ring during installation.Install the O-ring without applying excessive tension to prevent premature failure.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel and oil lines
  • General industrial machinery

⚠️ Engineering Warnings

  • Not recommended for use with strong acids, ozone, or ketones.
  • Operating temperature limits must be observed to ensure optimal performance.

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 cylinders, Fuel and oil lines, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.128"CS = 0.222"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.