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

3.194" OD Buna-N O-Ring | 3.846" ID 316 SS

Expert Overview

This industrial O-ring, crafted from robust Buna-N and featuring a 316 Stainless Steel casing, ensures exceptional sealing integrity in challenging operational conditions. Its precise dimensions guarantee a secure fit for critical applications.

StandardASME B18
Material316 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter3.846"
Outside Diameter3.194"
Cross Section0.073"

Detailed Engineering Specifications

Engineered for reliability and performance, this Buna-N O-ring is encased in a premium 316 Stainless Steel housing. With an inside diameter of 3.846 inches, an outside diameter of 3.194 inches, and a precise 0.073-inch cross-section, it is designed to withstand significant compression and maintain a leak-proof seal. The Buna-N material offers excellent resistance to petroleum-based fluids, oils, and hydraulic fluids, while the 316 Stainless Steel provides superior corrosion resistance, making it ideal for marine, chemical processing, and food and beverage industries. This combination ensures longevity and performance in high-pressure and extreme temperature environments.

🧊 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. Visually inspect the O-ring and mating groove for any debris or damage. 2. Lightly lubricate the O-ring with a compatible lubricant to facilitate installation and prevent tearing. 3. Carefully place the O-ring into the designated groove, ensuring it is seated evenly and without twisting.

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)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 an incompatible lubricant that degrades the Buna-N material.Always consult the material compatibility chart for Buna-N and select a lubricant specifically approved for the application.
Forcing the O-ring into the groove, causing it to stretch or tear.Ensure the O-ring is the correct size for the groove and use gentle, even pressure during installation. Lubrication is key.
O-ring not fully seated in the groove, leading to leaks.After installation, verify that the O-ring is properly seated and not protruding from the groove.

Common Applications

  • Hydraulic systems in demanding environments
  • Chemical processing equipment
  • Marine and offshore applications

⚠️ Engineering Warnings

  • Ensure material compatibility with the specific fluid and operating temperature.
  • Do not use in applications involving strong oxidizing agents or ozone.

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 in demanding environments, Chemical processing equipment, Marine and offshore applications.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.846"CS = 0.073"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.