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Industrial Buna-N O-Ring - 3.789" ID, 2.856" OD

Expert Overview

This industrial O-ring, crafted from robust Buna-N, ensures superior sealing performance. Engineered for precision, it provides a reliable barrier against leaks in critical applications.

StandardISO 9001
MaterialNylon
FinishAnodized
GradeN/A
Inside Diameter3.789"
Outside Diameter2.856"
Cross Section0.079"

Detailed Engineering Specifications

Manufactured under strict quality controls, this Buna-N O-ring features an Inside Diameter of 3.789 inches and an Outside Diameter of 2.856 inches, with a precise 0.079-inch cross-section. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to petroleum-based oils, fuels, hydraulic fluids, and water, making it ideal for a wide range of industrial sealing duties. Its resilience and durability ensure long-lasting performance under moderate temperatures and pressures, preventing leakage and contamination.

🧊 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 groove is clean, dry, and free of burrs. 2. Carefully stretch the O-ring over the larger component and guide it into the groove. 3. Apply a thin, compatible lubricant if necessary to ease installation and prevent damage.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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 excessive force during installation, which can nick or cut the O-ring.Gently guide the O-ring into the groove, using a lubricant if needed, and avoid sharp tools.
Installing an O-ring into a dirty or damaged groove.Thoroughly clean the groove and inspect for any damage or sharp edges before installation.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Automotive fuel systems
  • Industrial machinery

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents, ketones, or esters.
  • Ensure compatibility with the specific fluid and operating temperature range.

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 Nylon.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic cylinders, Automotive fuel systems, Industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.789"CS = 0.079"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.