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Industrial O-Ring, Buna-N | Stainless Steel | 2.170" ID x 3.750" OD

Expert Overview

This industrial O-ring, constructed from durable Buna-N and a 304 stainless steel housing, provides superior sealing performance. Engineered for exceptional resistance to chemicals and pressure, ensuring operational integrity in critical applications.

StandardDIN 933
Material304 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter2.170"
Outside Diameter3.750"
Cross Section0.105"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this industrial O-ring is precision-manufactured with a Buna-N sealing element encased in a robust 304 stainless steel housing. It boasts an inside diameter of 2.170", an outside diameter of 3.750", and a precise 0.105" cross-section. The Buna-N material offers excellent resistance to oils, fuels, and hydraulic fluids, while the stainless steel provides exceptional corrosion resistance and structural integrity, making it ideal for high-pressure and chemically aggressive environments. This design ensures reliable, long-lasting sealing in demanding industrial machinery.

🧊 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 is clean, free of debris, and properly dimensioned according to specifications. 2. Carefully inspect the O-ring for any defects or damage before installation. 3. Gently install the O-ring into its designated groove, avoiding stretching or twisting. Lubrication with a compatible lubricant may be beneficial for ease of installation and to prevent damage.

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
Overtightening fasteners, which can deform the O-ring and its housing, leading to leakage.Follow specified torque values for all fasteners to ensure even compression and prevent O-ring damage.
Using incompatible lubricants or cleaning agents that can degrade the Buna-N material.Always consult chemical compatibility charts to select appropriate lubricants and cleaning solutions for Buna-N and 304 stainless steel.

Common Applications

  • Hydraulic and pneumatic systems
  • Automotive and aerospace fluid power
  • Chemical processing equipment

⚠️ Engineering Warnings

  • Not recommended for use with high concentrations of ozone, ketones, or esters.
  • Operating temperature range should be strictly adhered to for optimal performance and lifespan.

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 and aerospace fluid power, Chemical processing equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.170"CS = 0.105"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.