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Buna-N Industrial O-Ring - Carbon Steel - 8.251" ID

Expert Overview

This industrial O-ring, constructed from robust Buna-N material within a carbon steel housing, provides exceptional sealing integrity. Engineered for reliability in demanding environments, it ensures leak-proof performance across various industrial settings.

StandardASME B18
MaterialCarbon Steel
FinishBlack Oxide
GradeN/A
Inside Diameter8.251"
Outside Diameter6.359"
Cross Section0.137"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is designed for critical sealing applications. Its precise dimensions include an Inside Diameter (ID) of 8.251 inches, an Outside Diameter (OD) of 6.359 inches, and a Cross Section of 0.137 inches. The Buna-N (Nitrile) material offers excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for moderate temperature and pressure ranges. The carbon steel housing provides structural support and enhanced durability in harsh operational conditions. This combination ensures a secure and long-lasting seal in static and dynamic 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 the mating groove is clean, free from debris, and within specified tolerances. 2. Lubricate the O-ring and groove lightly with a compatible lubricant to facilitate installation and prevent damage. 3. Carefully 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
Overstretching or twisting the O-ring during installation.Handle the O-ring with care and ensure it is installed without any distortion. Use proper lubrication.
Installing into a dirty or damaged groove.Thoroughly inspect and clean the groove before installation. Address any imperfections to prevent premature seal failure.

Common Applications

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

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing acids or ketones.
  • 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 equipment, Automotive seals, Industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.251"CS = 0.137"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.