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Industrial Buna-N O-Ring - 1.288" ID, 4.337" OD, 0.215" CS

Expert Overview

This robust Buna-N O-ring offers superior sealing performance for demanding industrial environments. Its robust construction ensures reliable containment of fluids and gases, minimizing downtime and operational costs.

StandardISO 9001
MaterialPolycarbonate
FinishAnodized
GradeN/A
Inside Diameter1.288"
Outside Diameter4.337"
Cross Section0.215"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring is engineered for exceptional durability and sealing integrity. With an inside diameter of 1.288 inches, an outside diameter of 4.337 inches, and a precise cross-section of 0.215 inches, it conforms reliably to groove specifications. Buna-N (Nitrile Butadiene Rubber) exhibits excellent resistance to petroleum-based oils, fuels, and hydraulic fluids, making it ideal for a wide range of static and dynamic sealing applications in manufacturing, automotive, and fluid power systems. Its broad temperature range and cost-effectiveness further solidify its position as a go-to sealing solution.

🧊 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. Clean both the O-ring and the groove thoroughly. 2. Lightly lubricate the O-ring with a compatible lubricant. 3. Carefully place the O-ring into the groove, ensuring it is seated without twists or 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 the wrong lubricant, which can degrade Buna-N.Always use lubricants specifically recommended for Buna-N rubber and the application's fluid.
Forcing the O-ring into the groove, causing cuts or nicks.Ensure the groove is clean and the O-ring is properly sized. Use appropriate tools if necessary, but avoid sharp edges.

Common Applications

  • Hydraulic systems
  • Fuel and oil lines
  • Pumps and valves

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents or ketones.
  • Avoid prolonged exposure to direct sunlight or ozone, which can cause degradation.

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, Fuel and oil lines, Pumps and valves.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 1.288"CS = 0.215"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.