Home > Sealing > Industrial O-Ring, Buna-N

Buna-N Industrial O-Ring | Carbon Steel | 5.939" ID | 8.036" OD

Expert Overview

This industrial Buna-N O-ring, constructed from durable carbon steel, offers exceptional sealing performance in demanding applications. Its precise dimensions ensure a reliable fit and long-lasting operation.

StandardASME B18
MaterialCarbon Steel
FinishAnodized
GradeN/A
Inside Diameter5.939"
Outside Diameter8.036"
Cross Section0.144"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring is engineered for superior sealing in challenging environments. Manufactured with a precise inside diameter of 5.939 inches, an outside diameter of 8.036 inches, and a cross-section of 0.144 inches, it provides a tight and secure seal. The Buna-N (Nitrile) material offers excellent resistance to oils, fuels, and many hydraulic fluids, making it ideal for a wide array of industrial machinery and equipment where leak prevention is critical. Its inherent resilience and compression set resistance ensure sustained performance over extended operational periods.

🧊 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:Yes

Installation Procedure

1. Ensure the mating groove surfaces are clean, dry, and free from debris or damage. 2. Carefully lubricate the O-ring and the groove with a compatible lubricant to facilitate installation and prevent tearing. 3. Gently compress and install the O-ring into the groove, ensuring it is seated evenly and 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

Chemical Composition

Carbon (C)0.28 - 0.55%
Manganese (Mn)0.60 - 0.90%
Phosphorus (P)0.04% max
Sulfur (S)0.05% max

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, leading to O-ring damage.Apply moderate, consistent pressure and use proper lubrication to avoid over-stretching or tearing the O-ring.
Incorrect O-ring size selection for the groove dimensions.Verify the inside diameter, outside diameter, and cross-section of the O-ring precisely match the groove specifications before installation.
Installing a dry O-ring, causing friction and potential damage.Always use a compatible lubricant appropriate for the O-ring material and the application environment.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fluid power equipment
  • Automotive sealing
  • Industrial pumps and valves

⚠️ Engineering Warnings

  • Not suitable for applications involving strong oxidizing agents or certain halogenated hydrocarbons.
  • Ensure material compatibility with the specific fluid or gas being sealed to prevent premature degradation.

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 Carbon Steel.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic cylinders, Fluid power equipment, Automotive sealing, Industrial pumps and valves.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.939"CS = 0.144"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.