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

Buna-N O-Ring | 304 Stainless Steel | 5.783" ID x 1.067" OD

Expert Overview

This industrial-grade Buna-N O-ring, constructed from durable 304 stainless steel, offers exceptional sealing performance. Engineered for reliability in challenging operational conditions, ensuring leak-free operation across a broad temperature range.

StandardDIN 933
Material304 Stainless Steel
FinishPassivated
GradeN/A
Inside Diameter5.783"
Outside Diameter1.067"
Cross Section0.263"

Detailed Engineering Specifications

Manufactured under strict quality controls, this Buna-N O-ring boasts precise dimensions: 5.783" inside diameter, 1.067" outside diameter, and a 0.263" cross-section. The 304 stainless steel construction provides excellent corrosion resistance and mechanical strength, suitable for a wide array of chemical and thermal exposures. Buna-N (Nitrile) offers good resistance to oils, fuels, and many hydraulic fluids. This combination makes it ideal for applications requiring robust sealing in environments with moderate temperatures and aggressive media.

🧊 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 surfaces are clean, dry, and free from debris or damage. 2. Carefully inspect the O-ring for any imperfections or signs of wear. 3. Apply a thin layer of compatible lubricant to the O-ring and groove to facilitate smooth installation and prevent tearing.

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)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
Using excessive force during installation, which can lead to O-ring deformation or damage.Apply a compatible lubricant to ease installation and use gentle, even pressure.
Selecting an O-ring material that is incompatible with the fluid or temperature of the application.Verify Buna-N compatibility with the specific media and operating temperature range before installation.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Automotive Components
  • Industrial Machinery

⚠️ Engineering Warnings

  • Do not use in applications involving strong oxidizing acids or chlorinated hydrocarbons.
  • Ensure operating temperatures remain within the recommended range for Buna-N 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 304 Stainless Steel.

Q: What are the main applications?

A: Hydraulic Systems, Pneumatic Cylinders, Automotive Components, Industrial Machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.783"CS = 0.263"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.