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Industrial O-Ring, Buna-N, 7.780" ID, 4.353" OD, Carbon Steel

Expert Overview

This industrial O-ring, crafted from Buna-N within a carbon steel housing, provides exceptional sealing performance. Its precise dimensions ensure a reliable fit, preventing leaks in critical industrial applications.

StandardASTM A106
MaterialCarbon Steel
FinishPlain
GradeN/A
Inside Diameter7.780"
Outside Diameter4.353"
Cross Section0.266"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this O-ring features an Inside Diameter of 7.780 inches, an Outside Diameter of 4.353 inches, and a Cross Section of 0.266 inches. The Buna-N elastomer offers excellent resistance to oils, fuels, and hydraulic fluids, while the carbon steel housing provides structural integrity and enhanced pressure handling capabilities. This combination makes it ideal for static and dynamic sealing in high-pressure hydraulic systems, automotive components, and general industrial machinery where chemical resistance and durability 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. Ensure the mating groove is clean, free of debris, and properly lubricated with a compatible lubricant. 2. Carefully stretch the O-ring over the larger diameter component, avoiding excessive twisting or stretching beyond its elastic limit. 3. Gently slide the O-ring into its designated groove, ensuring it seats evenly and without pinching.

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
Overstretching the O-ring during installation, leading to premature failure.Use appropriate tools and techniques to install the O-ring without exceeding its maximum elongation limit. Consider a slightly larger ID O-ring if installation is consistently difficult.
Installing the O-ring into a dirty or damaged groove.Thoroughly inspect and clean the groove for any burrs, nicks, or foreign material before installation. Proper groove preparation is critical for seal integrity.

Common Applications

  • Hydraulic cylinder seals
  • Pump shaft seals
  • Pneumatic actuator seals
  • Automotive fuel systems
  • General industrial machinery

⚠️ Engineering Warnings

  • Ensure compatibility of Buna-N with the specific fluids and temperatures encountered in the application.
  • Avoid exposure to ozone, strong acids, and certain polar solvents, as Buna-N may degrade under these conditions.

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, Pump shaft seals, Pneumatic actuator seals, Automotive fuel systems, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.780"CS = 0.266"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.