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

Buna-N O-Ring | 304 Stainless Steel | 6.109" ID

Expert Overview

This robust industrial O-ring features a Buna-N sealing element encapsulated within a durable 304 stainless steel housing. Engineered for reliable performance, it provides exceptional sealing integrity in critical applications.

StandardDIN 933
Material304 Stainless Steel
FinishPlain
GradeN/A
Inside Diameter6.109"
Outside Diameter7.661"
Cross Section0.083"

Detailed Engineering Specifications

A high-performance industrial component, this O-ring is meticulously manufactured with a Buna-N elastomer core for excellent resistance to oils, fuels, and many hydraulic fluids. The integral 304 stainless steel jacket provides enhanced rigidity, chemical inertness, and superior compression set resistance, particularly in high-pressure or abrasive environments. With an inside diameter of 6.109 inches, an outside diameter of 7.661 inches, and a precise cross-section of 0.083 inches, this O-ring is designed for critical sealing in pumps, valves, and hydraulic 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 is clean and free from debris. 2. Carefully lubricate the O-ring with a compatible lubricant. 3. Gently install the O-ring into the groove, avoiding any sharp tools or excessive force.

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
Using excessive force during installation, leading to O-ring damage.Always lubricate the O-ring and mating surfaces with a compatible lubricant and install gently, using hand pressure where possible.
Not verifying the compatibility of the lubricant with the Buna-N material.Consult the Buna-N compatibility chart or product data sheet to select a lubricant that will not degrade the elastomer.

Common Applications

  • Hydraulic Systems
  • Pneumatic Actuators
  • Fuel and Oil Lines

⚠️ Engineering Warnings

  • Do not use in applications involving high concentrations of ozone, ketones, or esters.
  • Ensure operating temperatures remain within the specified range for Buna-N and 304 stainless steel to maintain sealing integrity.

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 Actuators, Fuel and Oil Lines.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.109"CS = 0.083"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.