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

Buna-N O-Ring 2.225" ID x 3.857" OD x 0.138" CS

Expert Overview

This industrial O-ring, crafted from robust Buna-N material, provides superior sealing performance. Engineered for durability and chemical resistance, it ensures reliable operation in demanding environments.

StandardASME B18
MaterialNylon
FinishZinc Plated
GradeN/A
Inside Diameter2.225"
Outside Diameter3.857"
Cross Section0.138"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is precisely manufactured with an Inside Diameter of 2.225 inches, an Outside Diameter of 3.857 inches, and a Cross Section of 0.138 inches. The Buna-N (Nitrile) material offers excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide array of industrial sealing applications. Its robust construction ensures dependable performance under moderate temperature and pressure conditions, preventing leaks in critical systems.

🧊 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 and free of debris. 2. Lubricate the O-ring and groove lightly with a compatible lubricant. 3. Carefully install the O-ring, avoiding stretching or twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening or stretching the O-ring during installation.Install the O-ring without excessive force, ensuring it sits snugly in the groove without deformation.
Using incompatible lubricants or cleaning agents.Always consult chemical compatibility charts for the specific Buna-N compound to select appropriate lubricants and cleaning solutions.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive seals

⚠️ Engineering Warnings

  • Not recommended for use with ozone, strong acids, or polar solvents.
  • Service temperature range is limited; consult material specifications for extreme conditions.

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 equipment, Automotive seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.225"CS = 0.138"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.