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Buna-N O-Ring, 304 Stainless Steel, 4.459" OD, 0.271" ID

Expert Overview

This industrial O-ring, featuring a Buna-N sealing element encased in 304 stainless steel, offers superior chemical resistance and durability. Engineered for demanding environments, it provides reliable static and dynamic sealing solutions.

StandardASME B18
Material304 Stainless Steel
FinishPassivated
GradeN/A
Inside Diameter0.271"
Outside Diameter4.459"
Cross Section0.252"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is engineered for exceptional sealing integrity within corrosive and high-temperature applications. The robust 304 stainless steel housing provides excellent mechanical strength and resistance to a wide range of chemicals, oils, and fuels. Its precise dimensions, with an inside diameter of 0.271 inches, an outside diameter of 4.459 inches, and a substantial 0.252-inch cross-section, ensure a tight and secure fit in mating grooves, preventing leaks under pressure. Ideal for hydraulic systems, automotive applications, and chemical processing equipment.

🧊 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 mating groove surfaces are clean and free from debris or damage. 2. Carefully install the O-ring into the designated groove, avoiding any stretching or twisting. 3. Apply a thin layer of compatible lubricant if recommended for the specific application to facilitate installation and proper seating.

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
Overtightening or excessive stretching during installation.Install the O-ring gently, allowing it to seat naturally within the groove without undue force.
Using incompatible lubricants or cleaning agents.Always consult the material compatibility chart for Buna-N and 304 stainless steel to select appropriate lubricants and cleaning solutions.

Common Applications

  • Hydraulic and Pneumatic Systems
  • Automotive Fuel and Oil Systems
  • Chemical Processing Equipment

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing acids or ketones.
  • Ensure operating temperature remains within the specified range for Buna-N to maintain sealing performance.

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 Fuel and Oil Systems, Chemical Processing Equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.271"CS = 0.252"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.