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Buna-N Industrial O-Ring - Carbon Steel - 4.301" OD

Expert Overview

This industrial O-ring, crafted from Buna-N with a robust carbon steel core, offers superior sealing capabilities. Its precision dimensions ensure a secure fit, preventing leaks in critical industrial environments.

StandardASME B18
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Diameter8.821"
Outside Diameter4.301"
Cross Section0.220"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this Buna-N industrial O-ring features a precise inside diameter of 8.821 inches, an outside diameter of 4.301 inches, and a cross-section of 0.220 inches. The Buna-N (Nitrile Butadiene Rubber) material provides excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide range of temperature and pressure variations. The carbon steel core offers enhanced structural integrity and dimensional stability under demanding operational conditions. This combination ensures reliable, long-lasting sealing performance in static and dynamic applications.

🧊 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 mating surfaces are clean, dry, and free from debris. 2. Carefully place the O-ring into its groove, avoiding stretching or twisting. 3. Apply a thin layer of compatible lubricant if necessary to facilitate seating and prevent damage during assembly.

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
Over-stretching the O-ring during installation.Gently flex the O-ring to fit it into the groove without excessive tension. If it requires significant force, re-evaluate the groove dimensions or O-ring size.
Using incompatible lubricants or sealants.Consult the Buna-N material compatibility chart and select a lubricant specifically recommended for nitrile rubber to prevent premature degradation.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Fluid power applications

⚠️ Engineering Warnings

  • Not suitable for applications involving ozone, strong acids, or polar solvents.
  • Verify material compatibility with the specific fluid or gas being sealed.

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 equipment, Fluid power applications.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.821"CS = 0.220"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.