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Industrial O-Ring, Buna-N, 4.043" ID, 8.216" OD | Sealing Solutions

Expert Overview

This industrial O-ring, crafted from robust Buna-N material with a nylon reinforcement, ensures reliable sealing in demanding applications. Its precise dimensions guarantee a secure fit for critical fluid and gas containment systems.

StandardISO 9001
MaterialNylon
FinishZinc Plated
GradeN/A
Inside Diameter4.043"
Outside Diameter8.216"
Cross Section0.141"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this industrial O-ring boasts a precisely machined Buna-N compound reinforced with nylon for enhanced durability and extrusion resistance. With an Inside Diameter of 4.043 inches, an Outside Diameter of 8.216 inches, and a Cross Section of 0.141 inches, it provides exceptional sealing performance in moderate temperature and pressure environments. The Buna-N material offers excellent resistance to oils, fuels, and hydraulic fluids, making it a superior choice for a wide range of industrial equipment and 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 surfaces are clean, dry, and free from debris or sharp edges. 2. Lightly lubricate the O-ring with a compatible lubricant to ease installation and prevent damage. 3. Carefully insert the O-ring into the groove, ensuring it sits flush and is not twisted.

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using the wrong lubricant, which can degrade the Buna-N material.Always consult compatibility charts to select a lubricant that is safe for Buna-N.
Overtightening fasteners, leading to O-ring compression and premature failure.Tighten fasteners to the recommended torque specifications to avoid excessive squeeze on the O-ring.

Common Applications

  • Hydraulic Systems
  • Pneumatic Systems
  • Fuel and Oil Lines

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents or certain ketones and esters.
  • Operating temperature range is critical; consult material specifications for optimal performance.

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 Systems, Fuel and Oil Lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.043"CS = 0.141"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.