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Buna-N O-Ring, 304 Stainless Steel, 5.689" OD

Expert Overview

This industrial O-ring features a robust Buna-N elastomer seal housed within a 304 stainless steel retainer. Engineered for superior sealing performance in challenging applications, it ensures reliability and longevity.

StandardASME B18
Material304 Stainless Steel
FinishPassivated
GradeN/A
Inside Diameter0.675"
Outside Diameter5.689"
Cross Section0.160"

Detailed Engineering Specifications

A high-performance industrial component, this O-ring is constructed with a durable Buna-N (Nitrile Butadiene Rubber) elastomer, renowned for its excellent resistance to oils, fuels, and general chemicals. The supporting structure is precision-machined from corrosion-resistant 304 stainless steel, offering exceptional mechanical strength and environmental resilience. With an Inside Diameter (ID) of 0.675 inches, an Outside Diameter (OD) of 5.689 inches, and a Cross Section of 0.160 inches, this component is ideally suited for static and dynamic sealing applications where fluid containment and protection against external contaminants are critical.

🧊 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, dry, and free of burrs or debris. 2. Carefully compress the O-ring for insertion into the groove, avoiding any stretching or twisting. 3. Confirm the O-ring is properly seated and uniformly compressed within the groove to achieve a reliable seal.

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 fasteners, leading to excessive O-ring compression and premature failure.Adhere to specified torque values for all fasteners to ensure optimal O-ring compression without overstressing the seal.
Using the wrong O-ring material for the specific chemical or temperature environment.Verify the chemical compatibility and temperature range of the Buna-N material against the application's operating conditions.

Common Applications

  • Hydraulic and pneumatic systems
  • Automotive fluid systems
  • Industrial machinery and equipment

⚠️ Engineering Warnings

  • Avoid exposure to ozone, UV light, or extreme temperatures outside the recommended operating range for Buna-N.
  • Ensure proper lubrication during installation if recommended for the specific application to prevent damage to the elastomer.

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 fluid systems, Industrial machinery and equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.675"CS = 0.160"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.