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Buna-N O-Ring - 304 Stainless Steel, 3.320" ID x 3.644" OD

Expert Overview

This robust Buna-N O-ring features a 304 stainless steel housing for superior chemical resistance and durability. Engineered for demanding sealing applications, it ensures reliable performance in challenging industrial environments.

StandardDIN 933
Material304 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter3.320"
Outside Diameter3.644"
Cross Section0.187"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this Buna-N O-ring is constructed with a high-grade 304 stainless steel housing, providing exceptional corrosion resistance and mechanical integrity. The precise dimensions of 3.320" inside diameter, 3.644" outside diameter, and a 0.187" cross-section ensure a precise fit and effective seal in critical fluid power and chemical processing systems. Buna-N's inherent resistance to oils, fuels, and hydraulic fluids, combined with the stainless steel's strength, makes this component ideal for applications requiring both chemical compatibility and robust structural support.

🧊 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 of any debris or damage. 2. Carefully lubricate the O-ring with a compatible lubricant to facilitate installation and prevent tearing. 3. Gently seat the O-ring into the groove, ensuring it lies flat and is not twisted or stretched beyond its elastic limit.

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
Installing a dry O-ring, leading to potential tearing or damage during insertion.Always lubricate the O-ring with a compatible lubricant before installation.
Twisting or stretching the O-ring excessively during installation, compromising its sealing integrity.Carefully seat the O-ring without undue stretching or twisting, ensuring it lies flat in the groove.
Using the wrong type of lubricant, which can degrade the Buna-N material or the stainless steel.Consult material compatibility charts to select a lubricant specifically approved for Buna-N and 304 stainless steel.

Common Applications

  • Hydraulic systems
  • Chemical processing equipment
  • Fluid transfer lines

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents or ketones.
  • Ensure compatibility with the specific fluid and operating temperature before application.

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, Chemical processing equipment, Fluid transfer lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.320"CS = 0.187"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.