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

316 Stainless Steel Buna-N O-Ring | 0.288" ID x 6.929" OD x 0.188" CS

Expert Overview

This industrial O-ring, constructed from robust 316 stainless steel and Buna-N, ensures reliable sealing in challenging environments. Its precise dimensions guarantee a secure fit and dependable performance under pressure.

StandardISO 9001
Material316 Stainless Steel
FinishPassivated
GradeN/A
Inside Diameter0.288"
Outside Diameter6.929"
Cross Section0.188"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is meticulously manufactured from premium 316 stainless steel, chosen for its exceptional corrosion resistance and durability across a wide temperature range. Featuring an inside diameter of 0.288 inches, an outside diameter of 6.929 inches, and a cross-section of 0.188 inches, it is engineered for precise sealing applications. This combination of material and dimensional accuracy makes it ideal for preventing leaks in hydraulic systems, pneumatic equipment, and various chemical processing applications where resistance to oils, fuels, and certain chemicals is paramount. The 316 stainless steel housing provides structural integrity and protection against environmental degradation.

🧊 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. Inspect the groove and mating surfaces for cleanliness and damage. 2. Carefully place the O-ring into the designated groove, ensuring no twisting. 3. Apply a light lubricant compatible with Buna-N if necessary to facilitate installation and prevent damage.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°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 / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening during assembly, leading to O-ring extrusion or damage.Tighten fasteners to the manufacturer's specified torque values to avoid excessive compression.
Using incompatible lubricants or cleaning agents that degrade Buna-N.Always consult material compatibility charts and use only approved lubricants and cleaning agents.

Common Applications

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

⚠️ Engineering Warnings

  • Not suitable for applications involving strong oxidizing acids or ketones.
  • Exposure to high UV radiation may degrade material over extended periods.

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 316 Stainless Steel.

Q: What are the main applications?

A: Hydraulic and Pneumatic Systems, Chemical Processing Equipment, Automotive and Aerospace Fuel Systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.288"CS = 0.188"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.