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Buna-N O-Ring | 4.269" ID x 6.279" OD | Industrial Sealing

Expert Overview

This robust Buna-N O-ring provides superior sealing performance in demanding industrial environments. Engineered for resilience, it ensures reliable containment and protection against leaks.

StandardASME B18
MaterialPolycarbonate
FinishZinc Plated
GradeN/A
Inside Diameter4.269"
Outside Diameter6.279"
Cross Section0.212"

Detailed Engineering Specifications

Manufactured under strict quality controls, this industrial O-ring features a precise inside diameter of 4.269 inches, an outside diameter of 6.279 inches, and a cross-section of 0.212 inches. Constructed from Buna-N (Nitrile Butadiene Rubber), it exhibits excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide range of temperature and pressure conditions. Its robust composition ensures long-term sealing integrity.

🧊 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. Inspect the groove and mating surfaces for cleanliness and damage. 2. Carefully lubricate the O-ring and groove with a compatible lubricant. 3. Install the O-ring, ensuring it is seated evenly without twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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
Overtightening during installation, causing compression set.Tighten to manufacturer specifications; avoid excessive force.
Using incompatible lubricants or cleaning agents.Refer to chemical compatibility charts for Buna-N before selecting lubricants or cleaning agents.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Fuel and Oil Lines

⚠️ Engineering Warnings

  • Not suitable for high concentrations of ozone or UV exposure.
  • Avoid use with strong acids, ketones, or esters.

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 Polycarbonate.

Q: What are the main applications?

A: Hydraulic Systems, Pneumatic Cylinders, Fuel and Oil Lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.269"CS = 0.212"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.