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

Buna-N O-Ring | 304 Stainless Steel | 9.490" ID x 1.063" OD

Expert Overview

Engineered for robust sealing, this Buna-N O-ring, constructed with 304 stainless steel, offers exceptional chemical resistance and durability for critical applications. Its precise dimensions ensure a secure, leak-proof fit.

StandardASTM A106
Material304 Stainless Steel
FinishPassivated
GradeN/A
Inside Diameter9.490"
Outside Diameter1.063"
Cross Section0.219"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this industrial O-ring features a Buna-N elastomer seal housed within a 304 stainless steel retainer. The precise internal diameter is 9.490 inches, with an external diameter of 1.063 inches and a robust 0.219-inch cross-section. This combination provides superior resistance to oils, fuels, and many solvents, making it ideal for high-pressure hydraulic systems, automotive powertrains, and chemical processing equipment where material compatibility and long-term sealing integrity are paramount.

🧊 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 sealing surfaces are clean, dry, and free of debris. 2. Carefully stretch the O-ring over the component, avoiding pinching or excessive force. 3. Verify proper seating and compression of the O-ring within its groove for a secure seal.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

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, leading to premature failure.Apply gentle, even tension during installation. If significant stretching is required, consider a larger O-ring size or alternative sealing solution.
Installing on contaminated or damaged sealing surfaces.Thoroughly inspect and clean all mating surfaces to prevent leaks and O-ring damage.

Common Applications

  • Hydraulic and pneumatic systems
  • Automotive fuel and lubrication systems
  • Chemical processing and transfer lines

⚠️ Engineering Warnings

  • Not suitable for applications involving strong acids or ketones.
  • Ensure compatibility with operating temperature and pressure ranges.

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, Automotive fuel and lubrication systems, Chemical processing and transfer lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 9.490"CS = 0.219"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.