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

Industrial O-Ring, Buna-N, 4.779" ID, 10.507" OD, 304 Stainless

Expert Overview

This industrial O-ring, constructed from robust Buna-N and a 304 stainless steel housing, offers exceptional sealing performance. Engineered for durability and resistance to a wide range of fluids and chemicals.

StandardASME B18
Material304 Stainless Steel
FinishZinc Plated
GradeN/A
Inside Diameter4.779"
Outside Diameter10.507"
Cross Section0.209"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring is encased in a 304 stainless steel housing for enhanced structural integrity and chemical resistance. With an inside diameter of 4.779 inches, an outside diameter of 10.507 inches, and a precise cross-section of 0.209 inches, it ensures a tight and reliable seal in high-pressure and demanding environments. The Buna-N material provides excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a broad spectrum of industrial equipment and 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 surfaces are clean, dry, and free of debris. 2. Lubricate the O-ring lightly with a compatible lubricant if recommended for the application. 3. Carefully install the O-ring into the groove, avoiding 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
Over-stretching the O-ring during installationHandle the O-ring with care and ensure it is not stretched beyond its elastic limit; proper lubrication can aid installation.
Using incompatible lubricantsConsult the material compatibility chart for Buna-N and the specific fluid being sealed to select an appropriate lubricant.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Fluid power equipment

⚠️ Engineering Warnings

  • Not suitable for use with strong acids, ketones, or certain high-temperature applications.
  • Verify material compatibility with the specific chemical environment and operating temperature.

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 systems, Fluid power equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.779"CS = 0.209"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.