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Industrial O-Ring: Buna-N, 316 Stainless Steel, 7.428" ID x 2.640" OD

Expert Overview

This industrial O-ring features a robust Buna-N sealing element encased in premium 316 stainless steel. Engineered for reliability in demanding environments, it offers exceptional resistance to chemicals and extreme temperatures.

StandardDIN 933
Material316 Stainless Steel
FinishPlain
GradeN/A
Inside Diameter7.428"
Outside Diameter2.640"
Cross Section0.240"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this O-ring boasts an Inside Diameter of 7.428 inches and an Outside Diameter of 2.640 inches, with a precise Cross Section of 0.240 inches. The 316 stainless steel housing provides superior corrosion resistance, making it ideal for aggressive media and high-pressure systems. The Buna-N (Nitrile) elastomer offers excellent resilience and resistance to petroleum-based oils, fuels, and hydraulic fluids, ensuring long-lasting, leak-free performance in a wide array of industrial sealing applications.

🧊 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 surfaces are clean, dry, and free of debris. 2. Carefully apply a light, compatible lubricant to the O-ring and the groove. 3. Gently place the O-ring into the groove, ensuring it is seated without twisting.

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)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 fasteners, which can extrude or damage the O-ring.Follow recommended torque specifications for all fasteners.
Using incompatible lubricants or cleaning agents that degrade the Buna-N material.Consult material compatibility charts and use only approved lubricants and cleaners.

Common Applications

  • Hydraulic Systems
  • Pneumatic Systems
  • Chemical Processing Equipment
  • Automotive Seals
  • Oil and Gas Exploration

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents or ozone.
  • Avoid exposure to high temperatures exceeding the operational limits of Buna-N.

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 Systems, Pneumatic Systems, Chemical Processing Equipment, Automotive Seals, Oil and Gas Exploration.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.428"CS = 0.240"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.