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Industrial O-Ring, Buna-N, 4.032" ID, 9.642" OD

Expert Overview

This industrial O-ring, constructed from durable Buna-N, offers superior sealing capabilities. Its precise dimensions ensure a tight fit for critical fluid and gas containment in various industrial settings.

StandardASTM A106
Material304 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter4.032"
Outside Diameter9.642"
Cross Section0.254"

Detailed Engineering Specifications

Engineered for reliability and performance, this industrial O-ring features a precise Inside Diameter of 4.032 inches and an Outside Diameter of 9.642 inches, with a robust 0.254-inch cross-section. Fabricated from Buna-N (Nitrile Rubber), it provides excellent resistance to oils, fuels, hydraulic fluids, and general wear, making it suitable for a wide range of operational temperatures and pressures. The inherent resilience and chemical compatibility of Buna-N ensure long-term, leak-free performance in demanding industrial applications, maintaining seal integrity under dynamic conditions.

🧊 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:Yes

Installation Procedure

1. Ensure the mating groove surfaces are clean, free of debris, and undamaged. 2. Carefully stretch the O-ring over the component, avoiding excessive force or sharp tools that could nick or cut the material. 3. Position the O-ring squarely within its designated groove, ensuring it is not twisted or pinched before assembly of the mating component.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using excessive force or sharp tools during installation, leading to nicks or cuts in the O-ring.Handle the O-ring with care, and use a rounded, non-metallic installation tool if necessary to gently guide it into the groove.
Installing a twisted or improperly seated O-ring, resulting in leakage and premature failure.Visually inspect the O-ring to ensure it is sitting flat and evenly within the groove before mating the components.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Fluid power applications
  • Automotive components
  • General industrial machinery

⚠️ Engineering Warnings

  • Do not expose Buna-N O-rings to ozone, strong acids, or polar solvents, as this can degrade the material.
  • Ensure the O-ring material is compatible with the specific media and operating temperatures of the application.

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 304 Stainless Steel.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic systems, Fluid power applications, Automotive components, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.032"CS = 0.254"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.