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

3.812" Buna-N O-Ring | 7.528" OD | 316 SS

Expert Overview

This industrial O-ring, constructed from Buna-N with a 316 stainless steel housing, offers robust sealing for critical applications. Its precise dimensions ensure a reliable fit and effective containment.

StandardISO 9001
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter3.812"
Outside Diameter7.528"
Cross Section0.269"

Detailed Engineering Specifications

Engineered for reliability and performance, this industrial O-ring features a Buna-N sealing element within a high-grade 316 stainless steel housing. The specified dimensions of 3.812" inside diameter, 7.528" outside diameter, and a 0.269" cross-section provide a precise fit for a wide array of industrial sealing applications. Buna-N offers excellent resistance to oils, fuels, and many hydraulic fluids, while the 316 stainless steel housing provides superior corrosion resistance, making this component ideal for harsh chemical and environmental conditions. It is designed to maintain seal integrity under moderate pressures and temperatures, ensuring long-term operational efficiency.

🧊 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 grooves are clean, free of debris, and properly machined. 2. Carefully inspect the O-ring for any signs of damage or defects. 3. Gently install the O-ring into the designated groove, avoiding excessive stretching or twisting. 4. Confirm proper seating and compression of the O-ring before assembling mating components.

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
Using the wrong O-ring size for the groove.Always verify that the O-ring dimensions (ID, OD, and CS) precisely match the groove specifications for optimal sealing.
Damaging the O-ring during installation.Use appropriate tools and techniques to install the O-ring, ensuring it is not nicked, cut, or excessively stretched.
Installing into a dirty or damaged groove.Thoroughly clean and inspect the groove for any imperfections that could compromise the seal or damage the O-ring.

Common Applications

  • Hydraulic systems
  • Pneumatic assemblies
  • Chemical processing equipment
  • Fluid power applications

⚠️ Engineering Warnings

  • Not suitable for applications involving strong oxidizing acids or solvents.
  • Ensure compatibility of Buna-N with the specific media being sealed.

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 assemblies, Chemical processing equipment, Fluid power applications.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.812"CS = 0.269"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.