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Buna-N Industrial O-Ring, 304 Stainless Steel, 3.4" ID x 7.26" OD

Expert Overview

Engineered for robust sealing in demanding industrial environments, this Buna-N O-ring boasts superior chemical resistance and durability. Its precise dimensions ensure a reliable seal against pressure and fluids.

StandardDIN 933
Material304 Stainless Steel
FinishGalvanized
GradeN/A
Inside Diameter3.400"
Outside Diameter7.259"
Cross Section0.242"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this industrial O-ring features a Buna-N elastomer core for excellent resistance to oils, fuels, and hydraulic fluids, coupled with a robust 304 stainless steel housing for enhanced mechanical strength and corrosion resistance. The precise dimensions of 3.400" inside diameter, 7.259" outside diameter, and a 0.242" cross-section are critical for maintaining seal integrity under extreme pressures and temperatures. This combination makes it ideal for hydraulic systems, pneumatic equipment, and chemical processing where reliability and longevity 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 the mating grooves are clean, free of debris, and properly lubricated with a compatible lubricant. 2. Carefully install the O-ring into the groove, avoiding any sharp tools or excessive stretching. 3. Verify the O-ring is seated correctly and uniformly before assembling the mating components.

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 a dry installation, leading to O-ring damage.Always lubricate the O-ring and groove with a compatible lubricant before installation to prevent tearing or abrasion.
Over-stretching the O-ring during installation.Install the O-ring gently without excessive stretching to maintain its dimensional integrity and sealing capability.

Common Applications

  • Hydraulic Systems
  • Pneumatic Actuators
  • Chemical Processing Equipment

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents or ketones.
  • Ensure compatibility of sealing environment with Buna-N material properties.

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 Actuators, Chemical Processing Equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.400"CS = 0.242"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.