Home > Sealing > Industrial O-Ring, Buna-N

Buna-N O-Ring | 316 SS Industrial Seal - 7.46" ID

Expert Overview

This industrial O-ring features a durable Buna-N elastomer sealing element housed within a robust 316 stainless steel casing. Engineered for superior performance in demanding environments, it ensures reliable sealing against a wide range of fluids and pressures.

StandardDIN 933
Material316 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter7.460"
Outside Diameter10.178"
Cross Section0.162"

Detailed Engineering Specifications

A proven choice for industrial professionals, this O-ring is constructed with a high-performance Buna-N (Nitrile Butadiene Rubber) elastomer, offering excellent resistance to oils, fuels, and many hydraulic fluids. The 316 stainless steel housing provides exceptional corrosion resistance, making it suitable for use in marine, chemical processing, and food and beverage industries. With an inside diameter of 7.460 inches, an outside diameter of 10.178 inches, and a cross-section of 0.162 inches, this seal is designed for precise fitment and long-term operational integrity in static and dynamic applications requiring robust containment.

🧊 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 surfaces are clean, dry, and free from debris. 2. Lubricate the O-ring and groove lightly with a compatible lubricant. 3. Carefully install the O-ring into the designated groove, avoiding any stretching or twisting. 4. Apply gentle pressure to seat the O-ring fully within the groove before assembling mating components.

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 incompatible lubricants that can degrade the Buna-N elastomer.Always consult chemical compatibility charts to select a lubricant that is approved for use with Buna-N and the specific media being sealed.
Overstretching or twisting the O-ring during installation.Handle the O-ring with care and install it without excessive force to prevent premature failure due to deformation or damage.

Common Applications

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

⚠️ Engineering Warnings

  • Not recommended for use with ozone, ketones, or esters.
  • Ensure operating temperature is within the material's specified range to maintain sealing integrity.

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, Oil and gas exploration, Automotive fuel systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.460"CS = 0.162"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.