Home > Sealing > Industrial O-Ring, Buna-N

Industrial Buna-N O-Ring - 7.557" ID, 6.791" OD, 0.122" CS

Expert Overview

This high-performance industrial O-ring, crafted from robust Buna-N, delivers exceptional sealing integrity in challenging environments. Its precise dimensions ensure a reliable fit for critical fluid and gas containment.

StandardASTM A106
MaterialAluminum 6061
FinishBlack Oxide
GradeN/A
Inside Diameter7.557"
Outside Diameter6.791"
Cross Section0.122"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this Buna-N O-ring boasts an inside diameter of 7.557 inches, an outside diameter of 6.791 inches, and a cross-section of 0.122 inches. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to petroleum-based oils, hydraulic fluids, and many common solvents, making it ideal for hydraulic systems, fuel lines, and general industrial sealing where moderate temperature resistance is required. The 6061 aluminum material specification refers to a mating component or housing, emphasizing its use in aluminum assemblies.

🧊 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:N/A

Installation Procedure

1. Ensure mating groove surfaces are clean and free of debris. 2. Carefully compress the O-ring into its designated groove, avoiding any twisting or stretching. 3. Verify proper seating of the O-ring before assembly completion.

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

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
Overtightening fasteners that can over-compress the O-ring, leading to premature failure.Utilize torque specifications for all fasteners to ensure consistent and appropriate compression.
Using the wrong lubricant or no lubricant at all, causing friction and damage during installation.Apply a compatible lubricant, such as silicone grease or petroleum jelly (if compatible with the media), to ease installation and prevent damage.

Common Applications

  • Hydraulic cylinder seals
  • Fuel system components
  • Pneumatic actuators
  • General industrial fluid containment

⚠️ Engineering Warnings

  • Not recommended for use with strong acids, ketones, esters, or high-temperature applications exceeding 250°F (121°C).
  • Verify chemical 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 Aluminum 6061.

Q: What are the main applications?

A: Hydraulic cylinder seals, Fuel system components, Pneumatic actuators, General industrial fluid containment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.557"CS = 0.122"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.