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

Buna-N Industrial O-Ring | 0.565" ID x 3.309" OD | 304 Stainless Steel

Expert Overview

This industrial-grade Buna-N O-ring, housed within a 304 stainless steel casing, offers superior sealing performance in challenging operational conditions. Engineered for durability and resistance.

StandardASME B18
Material304 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter0.565"
Outside Diameter3.309"
Cross Section0.127"

Detailed Engineering Specifications

Designed for demanding industrial environments, this Buna-N O-ring features a precise inside diameter of 0.565 inches and an outside diameter of 3.309 inches, with a 0.127-inch cross-section. The 304 stainless steel construction provides exceptional corrosion resistance and mechanical strength, making it suitable for applications involving aggressive chemicals, high temperatures, and significant pressure. Its robust design ensures reliable sealing and extends service life in rigorous 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 the mating surfaces are clean, dry, and free from debris. 2. Carefully place the O-ring into its designated groove, avoiding stretching or twisting. 3. Assemble the components, applying even pressure to compress the O-ring for a seal.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-stretching the O-ring during installation.Install the O-ring without excessive tension; it should sit snugly in the groove without deformation.
Installing on dirty or damaged mating surfaces.Thoroughly clean and inspect all sealing surfaces for nicks, scratches, or contaminants before installation.

Common Applications

  • Hydraulic and pneumatic systems
  • Chemical processing equipment
  • Automotive and aerospace sealing

⚠️ Engineering Warnings

  • Not suitable for ozone, strong oxidizing agents, or chlorinated hydrocarbons.
  • Verify compatibility with specific media and temperature ranges before use.

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 304 Stainless Steel.

Q: What are the main applications?

A: Hydraulic and pneumatic systems, Chemical processing equipment, Automotive and aerospace sealing.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.565"CS = 0.127"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.