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Industrial Buna-N O-Ring - 316 SS, 9.860" ID x 4.309" OD

Expert Overview

This industrial-grade Buna-N O-ring, encased in corrosion-resistant 316 stainless steel, offers exceptional sealing performance in challenging environments. Engineered for reliability and durability in critical applications.

StandardASTM A106
Material316 Stainless Steel
FinishZinc Plated
GradeN/A
Inside Diameter9.860"
Outside Diameter4.309"
Cross Section0.261"

Detailed Engineering Specifications

Manufactured under strict quality controls, this O-ring features an inside diameter of 9.860 inches, an outside diameter of 4.309 inches, and a cross-section of 0.261 inches. The Buna-N elastomer provides excellent resistance to oils, fuels, and hydraulic fluids, while the 316 stainless steel housing ensures superior corrosion resistance, chemical inertness, and mechanical strength. This combination makes it ideal for high-pressure, high-temperature, and chemically aggressive applications where robust and long-lasting sealing is paramount.

🧊 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. Inspect the groove and mating surfaces for cleanliness and damage. 2. Lubricate the O-ring with a compatible lubricant. 3. Carefully insert the O-ring into the groove, ensuring it is seated without twisting or stretching excessively.

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)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°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 / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Using excessive force during installation, leading to O-ring damage.Apply a compatible lubricant to the O-ring and groove to reduce friction and ease installation. Use hand tools or specialized installation equipment where appropriate.
Installing the wrong size O-ring, resulting in leakage or improper sealing.Verify the O-ring dimensions (ID, OD, cross-section) against the specified groove dimensions before installation. Double-check part numbers and specifications.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Chemical processing equipment
  • Oil and gas exploration
  • Automotive seals

⚠️ Engineering Warnings

  • Ensure compatibility of O-ring material with the fluid or chemical being sealed.
  • Avoid exposure to high levels of ozone, UV radiation, or strong oxidizing agents, which can degrade Buna-N.

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 316 Stainless Steel.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic systems, Chemical processing equipment, Oil and gas exploration, Automotive seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 9.860"CS = 0.261"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.