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

Buna-N O-Ring | 316 Stainless Steel | 8.394" OD | Industrial Sealing

Expert Overview

This robust industrial O-ring features a Buna-N sealing element encapsulated within a durable 316 stainless steel housing. Engineered for superior sealing performance in challenging environments, it ensures reliable fluid containment and pressure resistance.

StandardISO 9001
Material316 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter0.147"
Outside Diameter8.394"
Cross Section0.218"

Detailed Engineering Specifications

Manufactured under strict quality controls, this industrial O-ring boasts a precise inside diameter of 0.147 inches, an outside diameter of 8.394 inches, and a cross-section of 0.218 inches. The Buna-N (Nitrile) elastomer offers excellent resistance to oils, fuels, and hydraulic fluids, while the 316 stainless steel housing provides exceptional corrosion resistance and mechanical strength, making it ideal for high-pressure systems and aggressive chemical media. This combination ensures long-term sealing integrity and operational 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 surfaces are clean, dry, and free from burrs or debris. 2. Carefully install the O-ring into the designated groove, avoiding stretching or twisting. 3. Assemble mating components, applying light, even pressure to seat the O-ring without over-compression.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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 fasteners, leading to O-ring extrusion or compression set.Adhere to specified torque values for all fasteners to prevent over-compression and ensure proper sealing pressure.
Using incompatible cleaning agents that degrade the Buna-N material.Consult chemical compatibility charts for Buna-N and use only approved cleaning solutions.
Installing the O-ring with excessive stretching or twisting, causing premature failure.Gently place the O-ring into its groove, ensuring it lies flat and without distortion during installation.

Common Applications

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

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing acids or ketones.
  • Ensure operating temperatures remain within the specified range for Buna-N elastomers.

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 fuel systems, Oil and gas exploration.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.147"CS = 0.218"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.