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Buna-N Industrial O-Ring - 8.090" ID, 4.002" OD, 0.115" CS

Expert Overview

This high-performance industrial O-ring, crafted from robust Buna-N, ensures exceptional sealing integrity. Engineered for demanding applications, it provides reliable performance and longevity in critical fluid and gas systems.

StandardDIN 933
MaterialCarbon Steel
FinishPlain
GradeN/A
Inside Diameter8.090"
Outside Diameter4.002"
Cross Section0.115"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is precisely manufactured with an Inside Diameter (ID) of 8.090 inches, an Outside Diameter (OD) of 4.002 inches, and a cross-sectional diameter (CS) of 0.115 inches. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to petroleum-based oils, fuels, hydraulic fluids, and water, making it suitable for a wide range of industrial sealing applications. Its inherent resilience and compression set resistance ensure long-term sealing effectiveness under moderate pressure and temperature conditions.

🧊 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 sealing groove is clean, dry, and free from burrs or damage. 2. Carefully lubricate the O-ring with a compatible lubricant to prevent tearing during installation. 3. Gently place the O-ring into the groove, ensuring it is seated evenly without twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 the Buna-N material.Always use a lubricant specifically recommended for Buna-N and the application's operating conditions.
Forcing the O-ring into the groove, leading to nicks or cuts.Apply gentle pressure and use appropriate tools if necessary to avoid damaging the O-ring during installation.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Fuel and oil handling

⚠️ Engineering Warnings

  • Not suitable for exposure to ozone, UV, or weathering.
  • Avoid use in applications involving strong acids, ketones, or esters.

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, Fuel and oil handling.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.090"CS = 0.115"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.