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Buna-N O-Ring, 316 Stainless Steel, 6.75" ID

Expert Overview

This robust industrial O-ring, constructed with a Buna-N sealing element and a 316 stainless steel housing, offers exceptional durability and chemical resistance for critical applications.

StandardDIN 933
Material316 Stainless Steel
FinishGalvanized
GradeN/A
Inside Diameter6.750"
Outside Diameter3.522"
Cross Section0.273"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this O-ring features an Inside Diameter (ID) of 6.750 inches, an Outside Diameter (OD) of 3.522 inches, and a Cross Section (CS) of 0.273 inches. The 316 stainless steel housing provides superior corrosion resistance, making it suitable for aggressive chemical environments and high-temperature applications. The Buna-N elastomer ensures excellent resistance to oils, fuels, and many hydraulic fluids, offering reliable sealing performance in pumps, valves, cylinders, and fluid power systems.

🧊 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 is clean, free of debris, and properly dimensioned. 2. Lightly lubricate the O-ring with a compatible lubricant to prevent damage during installation. 3. Carefully install the O-ring into the groove, avoiding any stretching or twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 gentle pressure and ensure the O-ring is seated correctly within the groove without stretching or twisting.
Installing the O-ring in a dirty or contaminated groove.Thoroughly clean the groove and surrounding surfaces before installation to prevent seal failure and leakage.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Chemical Processing Equipment
  • Fluid Transfer Lines

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing acids or ketones.
  • Verify material compatibility with specific process fluids and operating temperatures.

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 Cylinders, Chemical Processing Equipment, Fluid Transfer Lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.750"CS = 0.273"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.