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Industrial O-Ring, Buna-N, 316 SS, 3.755" ID, 8.499" OD

Expert Overview

This robust industrial O-ring features a Buna-N sealing element encapsulated within a corrosion-resistant 316 stainless steel housing. Engineered for reliable sealing under extreme pressures and temperatures, it ensures operational integrity in critical systems.

StandardASTM A106
Material316 Stainless Steel
FinishGalvanized
GradeN/A
Inside Diameter3.755"
Outside Diameter8.499"
Cross Section0.163"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this industrial O-ring boasts an Inside Diameter of 3.755 inches, an Outside Diameter of 8.499 inches, and a Cross Section of 0.163 inches. The Buna-N compound provides excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide temperature range. The 316 stainless steel housing offers superior corrosion resistance against aggressive media and environments, ensuring long-term performance and sealing reliability in demanding industrial settings.

🧊 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 mating groove surfaces are clean and free from debris. 2. Carefully install the O-ring into its designated groove, avoiding any stretching or twisting. 3. Apply a thin layer of compatible lubricant if recommended for the specific application and fluid.

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
Overtightening the gland, which can lead to O-ring extrusion or damage.Tighten fasteners to the manufacturer's recommended torque specifications for the gland assembly.
Using incompatible lubricants or cleaning agents that degrade the Buna-N material.Always consult material compatibility charts and use only lubricants approved for Buna-N and the system fluid.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Chemical processing
  • Automotive applications
  • Fluid power systems

⚠️ Engineering Warnings

  • Not suitable for use with strong acids, ketones, or esters.
  • Exposure to ozone and UV radiation can degrade Buna-N material over time.

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 equipment, Chemical processing, Automotive applications, Fluid power systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.755"CS = 0.163"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.