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

Buna-N Carbon Steel Industrial O-Ring | 3.577" ID x 6.604" OD

Expert Overview

This robust industrial O-ring, constructed from durable Buna-N and a carbon steel core, provides exceptional sealing integrity. Engineered for resilience, it ensures reliable performance in a wide array of demanding industrial applications.

StandardASTM A106
MaterialCarbon Steel
FinishPlain
GradeN/A
Inside Diameter3.577"
Outside Diameter6.604"
Cross Section0.079"

Detailed Engineering Specifications

Engineered for reliability and performance, this industrial O-ring features a precise Inside Diameter of 3.577 inches, an Outside Diameter of 6.604 inches, and a Cross Section of 0.079 inches. The Buna-N compound offers excellent resistance to oils, fuels, and hydraulic fluids, while the carbon steel core provides structural integrity and enhanced pressure handling capabilities. This combination makes it ideal for static and dynamic sealing applications where chemical resistance and dependable containment are paramount. Its material composition is optimized for moderate temperature ranges and pressures, ensuring long service life and preventing leaks in critical systems.

🧊 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 sealing surfaces are clean and free from debris. 2. Carefully lubricate the O-ring with a compatible lubricant. 3. Install the O-ring into its designated groove, ensuring it is not twisted or stretched excessively.

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

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 the wrong lubricant, which can degrade Buna-N.Always consult a compatibility chart and use a lubricant specifically recommended for Buna-N seals.
Overstretching the O-ring during installation, leading to premature failure.Install the O-ring gently, allowing it to seat properly without undue tension.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Oil and fuel handling equipment

⚠️ Engineering Warnings

  • Not suitable for high-temperature applications above 250°F (121°C).
  • Avoid exposure to ozone, UV radiation, and strong oxidizing agents.

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 systems, Oil and fuel handling equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.577"CS = 0.079"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.