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Industrial O-Ring, Buna-N (Carbon Steel) - 4.957" ID

Expert Overview

This robust industrial O-ring, constructed with Buna-N and reinforced with carbon steel, ensures reliable sealing in challenging operational conditions. Its precise dimensions guarantee a secure fit and superior performance.

StandardASME B18
MaterialCarbon Steel
FinishPlain
GradeN/A
Inside Diameter4.957"
Outside Diameter6.739"
Cross Section0.130"

Detailed Engineering Specifications

Designed for demanding industrial environments, this Buna-N O-ring offers exceptional resistance to oils, fuels, and hydraulic fluids. The embedded carbon steel provides enhanced structural integrity and resistance to extrusion under high pressure and temperature fluctuations. With an inside diameter of 4.957 inches, an outside diameter of 6.739 inches, and a cross-section of 0.130 inches, it is engineered for critical sealing applications in hydraulic systems, pneumatic assemblies, and fluid transfer equipment where durability and long service life are paramount.

🧊 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. Inspect the groove and sealing surfaces for cleanliness and damage. 2. Lightly lubricate the O-ring with a compatible lubricant to ease installation and prevent damage. 3. Carefully install the O-ring into its designated 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 the wrong lubricant, which can degrade Buna-N.Always use a lubricant recommended for Buna-N seals and the specific application fluid.
Overtightening fasteners, which can deform the O-ring and its groove.Follow specified torque values for all assembly hardware to prevent over-compression.

Common Applications

  • Hydraulic cylinder seals
  • Pneumatic actuator seals
  • Fluid power systems

⚠️ Engineering Warnings

  • Not suitable for applications involving strong oxidizing agents or ozone.
  • Consult material compatibility charts before use with specific chemicals or temperatures exceeding recommended 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 cylinder seals, Pneumatic actuator seals, Fluid power systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.957"CS = 0.130"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.