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

Industrial Buna-N O-Ring | Polycarbonate | 8.475" ID x 3.119" OD

Expert Overview

This industrial O-ring, crafted from durable Buna-N and featuring a Polycarbonate housing, ensures robust sealing in critical applications. Its precise dimensions guarantee a secure fit for reliable performance.

StandardDIN 933
MaterialPolycarbonate
FinishPlain
GradeN/A
Inside Diameter8.475"
Outside Diameter3.119"
Cross Section0.196"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this industrial O-ring boasts an Inside Diameter of 8.475 inches, an Outside Diameter of 3.119 inches, and a Cross Section of 0.196 inches. The Buna-N material offers excellent resistance to petroleum oils, fuels, and hydraulic fluids, making it suitable for a wide range of demanding industrial environments. Its inherent flexibility and resilience ensure a tight seal against leakage under pressure. The Polycarbonate material provides structural integrity and chemical resistance, further enhancing its suitability for challenging operational conditions. This combination of materials ensures long-term reliability and performance in static and dynamic sealing applications.

🧊 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 the sealing groove is clean, free of debris, and properly dimensioned. 2. Carefully stretch the O-ring over the component or into the groove, avoiding excessive force or sharp tools that could nick or cut the material. 3. Ensure the O-ring is properly seated and fully contained within its designated groove without twisting or bunching.

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

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 sharp tools or excessive force during installation, leading to O-ring damage.Employ proper installation techniques and tools designed for O-rings to prevent nicks, cuts, or stretching beyond material limits.
Incorrect groove dimensions or improper O-ring selection for the application's pressure and temperature requirements.Verify groove dimensions against O-ring specifications and consult material compatibility charts to ensure the correct O-ring is chosen for optimal performance and longevity.

Common Applications

  • Hydraulic Systems
  • Pneumatic Actuators
  • Fuel and Oil Handling Equipment

⚠️ Engineering Warnings

  • Not recommended for applications involving strong acids, ketones, esters, or chlorinated hydrocarbons.
  • Ensure compatibility with the specific fluid media and operating temperatures before deployment.

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 Polycarbonate.

Q: What are the main applications?

A: Hydraulic Systems, Pneumatic Actuators, Fuel and Oil Handling Equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.475"CS = 0.196"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.