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Buna-N Industrial O-Ring | Carbon Steel | 6.894" ID

Expert Overview

Engineered for critical sealing, this Buna-N O-ring offers exceptional resistance to fuels, oils, and hydraulic fluids. Its carbon steel construction ensures durability and reliable performance in harsh industrial environments.

StandardASTM A106
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Diameter6.894"
Outside Diameter0.998"
Cross Section0.157"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this industrial O-ring features an Inside Diameter of 6.894 inches, an Outside Diameter of 0.998 inches, and a Cross Section of 0.157 inches. Constructed from Buna-N (Nitrile butadiene rubber), it provides excellent resistance to petroleum-based hydraulic fluids, oils, greases, and water. The carbon steel component, while not directly a sealing material, is often used in conjunction with O-rings in housing or gland designs for structural support and protection. This combination is ideal for static and dynamic sealing applications where chemical compatibility and mechanical integrity are paramount, such as in hydraulic systems, fuel lines, and general industrial machinery.

🧊 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 gland or mating surface is clean and free from debris. 2. Carefully lubricate the O-ring with a compatible lubricant. 3. Install the O-ring into the gland, avoiding stretching or twisting.

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
Over-stretching the O-ring during installation.Carefully place the O-ring into the groove without excessive tension to prevent premature failure.
Using incompatible lubricants.Always verify that the lubricant is compatible with Buna-N to avoid degradation.

Common Applications

  • Hydraulic cylinders
  • Fuel delivery systems
  • Pneumatic actuators

⚠️ Engineering Warnings

  • Not recommended for use with ozone, ketones, or certain esters.
  • Ensure operating temperature remains within Buna-N's specified range for optimal performance.

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 cylinders, Fuel delivery systems, Pneumatic actuators.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.894"CS = 0.157"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.