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

Buna-N O-Ring, 304 Stainless Steel, 2.378" ID x 8.173" OD

Expert Overview

This industrial O-ring, constructed from resilient Buna-N and a 304 stainless steel housing, offers superior sealing integrity. Engineered for critical applications, it ensures reliable performance under demanding conditions.

StandardDIN 933
Material304 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter2.378"
Outside Diameter8.173"
Cross Section0.146"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is designed for exceptional sealing capabilities within a 304 stainless steel retainer. The Buna-N material provides excellent resistance to oils, fuels, and hydraulic fluids, making it ideal for diverse industrial fluid handling systems. Its precise dimensions, with an inside diameter of 2.378 inches, an outside diameter of 8.173 inches, and a cross-section of 0.146 inches, ensure a tight and secure fit in standard groove designs. The 304 stainless steel housing offers corrosion resistance and structural integrity, further enhancing its longevity and reliability in harsh operating environments.

🧊 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 position the O-ring within its designated groove, avoiding any stretching or twisting. 3. Apply a light, compatible lubricant if recommended for the specific application to facilitate seating and prevent initial abrasion.

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
Stretching or twisting the O-ring during installation.Handle the O-ring with care, ensuring it is placed squarely into the groove without distortion.
Installing on a contaminated or damaged groove surface.Thoroughly inspect and clean the groove before installation to prevent leaks and premature O-ring failure.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Fuel Injection Systems
  • Oil Seals

⚠️ Engineering Warnings

  • Ensure compatibility of the Buna-N material with the specific fluid and operating temperature range.
  • Avoid exposure to ozone, UV, or weathering, 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, Fuel Injection Systems, Oil Seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.378"CS = 0.146"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.