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Buna-N O-Ring, 9.420" ID, 0.404" OD, Carbon Steel

Expert Overview

This high-performance Buna-N O-ring, crafted from robust carbon steel, offers exceptional sealing in a wide array of industrial applications. Engineered for durability and chemical resistance.

StandardASME B18
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
Inside Diameter9.420"
Outside Diameter0.404"
Cross Section0.256"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this Buna-N O-ring features an Inside Diameter of 9.420 inches, an Outside Diameter of 0.404 inches, and a Cross Section of 0.256 inches. The Buna-N (Nitrile) material provides excellent resistance to oils, fuels, hydraulic fluids, and many common chemicals, while the carbon steel core offers structural integrity and resistance to deformation under pressure. This combination makes it ideal for static and dynamic sealing applications where resistance to petroleum-based substances is critical.

🧊 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 groove is clean and free of debris. 2. Lightly lubricate the O-ring with a compatible lubricant. 3. Carefully install the O-ring into the groove, avoiding stretching or 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
Stretching or twisting the O-ring during installation.Install the O-ring without excessive stretching or rotation to maintain its sealing integrity.
Using an incompatible lubricant that degrades the Buna-N material.Consult a compatibility chart to select a lubricant suitable for Buna-N and the operating environment.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Automotive fuel systems
  • Industrial machinery seals

⚠️ Engineering Warnings

  • Not suitable for use with ozone, strong acids, or polar solvents.
  • Ensure operating temperature and pressure are within the specified limits for Buna-N.

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, Automotive fuel systems, Industrial machinery seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 9.420"CS = 0.256"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.