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316 Stainless Steel O-Ring, Buna-N - 8.437" ID

Expert Overview

This industrial O-ring, featuring a Buna-N sealing element within a 316 stainless steel housing, offers superior chemical resistance and robust sealing capabilities for critical applications. Engineered for high-performance reliability.

StandardISO 9001
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter8.437"
Outside Diameter3.439"
Cross Section0.118"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this O-ring boasts an 8.437-inch inside diameter, a 3.439-inch outside diameter, and a 0.118-inch cross-section. The 316 stainless steel housing provides exceptional corrosion resistance, particularly in harsh chemical and saltwater environments, while the Buna-N elastomer ensures excellent resistance to oils, fuels, and many hydraulic fluids. This combination makes it ideal for static and dynamic sealing in pumps, valves, flanges, and hydraulic systems where durability and long service life are paramount.

🧊 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 contaminants. 2. Carefully inspect the O-ring for any signs of damage before installation. 3. Gently install the O-ring into the groove, avoiding stretching or twisting, ensuring it sits flush.

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
Installing a damaged or distorted O-ring.Always visually inspect the O-ring for nicks, cuts, or deformation before installation. Replace if any damage is present.
Overstretching or twisting the O-ring during installation.Install the O-ring using a smooth, rolling motion into the groove. Avoid pulling or forcing, which can cause permanent damage and lead to premature failure.
Installing into a contaminated or damaged groove.Thoroughly clean the groove and ensure it is free of debris, sharp edges, or imperfections before inserting the O-ring.

Common Applications

  • Hydraulic Systems
  • Chemical Processing Equipment
  • Marine and Offshore Applications

⚠️ Engineering Warnings

  • Do not expose Buna-N to high concentrations of ozone, ketones, esters, or chlorinated hydrocarbons.
  • Ensure compatibility with the specific media and operating temperatures before application.

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, Chemical Processing Equipment, Marine and Offshore Applications.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.437"CS = 0.118"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.