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

Buna-N Industrial O-Ring - 5.454" ID, 2.239" OD

Expert Overview

This robust Buna-N industrial O-ring provides exceptional sealing integrity for critical fluid and gas applications. Precision manufactured to exacting standards, ensuring leak-free performance.

StandardASME B18
MaterialNylon
FinishGalvanized
GradeN/A
Inside Diameter5.454"
Outside Diameter2.239"
Cross Section0.251"

Detailed Engineering Specifications

Specified by design engineers worldwide, this Buna-N (Nitrile) industrial O-ring offers excellent resistance to petroleum-based oils, fuels, and hydraulic fluids. Its material composition delivers a broad operating temperature range and good abrasion resistance. The precise dimensions – an inside diameter of 5.454 inches, an outside diameter of 2.239 inches, and a cross-section of 0.251 inches – are critical for achieving optimal compression and a tight seal in static and dynamic applications. Designed for reliability in hydraulic systems, automotive components, 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:N/A

Installation Procedure

1. Ensure the mating groove is clean, free of debris, and properly lubricated with a compatible lubricant. 2. Carefully stretch the O-ring over the component, avoiding sharp edges or excessive force that could nick or cut the sealing surface. 3. Gently seat the O-ring into its designated groove, ensuring it is not twisted or overstretched.

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
Installing a dry O-ring, leading to increased friction and potential damage during assembly.Always lubricate the O-ring and the groove with a compatible lubricant before installation to reduce friction and prevent damage.
Using excessive force or sharp tools during installation, causing nicks, cuts, or extrusion of the O-ring.Apply gentle pressure and use appropriate tools or techniques to avoid damaging the O-ring's sealing surface.
Installing a twisted or untwisted O-ring, which compromises the seal and can lead to premature failure.Ensure the O-ring is seated flat and evenly within the groove without any twists or kinks.

Common Applications

  • Hydraulic Cylinder Seals
  • Automotive Fuel Systems
  • General Industrial Machinery Sealing
  • Pneumatic Actuators

⚠️ Engineering Warnings

  • Not suitable for exposure to ozone, UV, or weathering.
  • Avoid use with strong acids, ketones, esters, and chlorinated hydrocarbons.

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 Cylinder Seals, Automotive Fuel Systems, General Industrial Machinery Sealing, Pneumatic Actuators.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.454"CS = 0.251"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.