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

304 Stainless Steel Buna-N Industrial O-Ring | 2.215" ID | 5.186" OD

Expert Overview

This industrial O-ring, crafted from durable Buna-N and housed within a robust 304 stainless steel casing, provides superior sealing in challenging environments. Engineered for longevity and leak prevention.

StandardASME B18
Material304 Stainless Steel
FinishGalvanized
GradeN/A
Inside Diameter2.215"
Outside Diameter5.186"
Cross Section0.222"

Detailed Engineering Specifications

Engineered for reliability and performance, this industrial O-ring features a precise inside diameter of 2.215 inches and an outside diameter of 5.186 inches, with a substantial 0.222-inch cross-section. The Buna-N elastomer offers excellent resistance to oils, fuels, and hydraulic fluids, while the 304 stainless steel housing enhances structural integrity and corrosion resistance, making it suitable for high-pressure and extreme temperature applications in chemical processing, automotive, and fluid power systems.

🧊 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 lubricate the O-ring and groove with a compatible lubricant to prevent tearing. 3. Gently install the O-ring into the groove, avoiding excessive stretching or twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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, leading to O-ring damage.Lubricate the O-ring and groove adequately, and use specialized installation tools if necessary.
Incorrect O-ring size selection for the groove, causing leaks or premature failure.Verify O-ring dimensions against groove specifications and consult AS568A standards for standard sizes.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Chemical Processing Equipment
  • Fuel and Oil Lines

⚠️ Engineering Warnings

  • Not suitable for high concentrations of ozone, ketones, or esters.
  • Avoid exposure to strong acids and UV radiation, which can degrade Buna-N.

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, Chemical Processing Equipment, Fuel and Oil Lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.215"CS = 0.222"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.