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Industrial Buna-N O-Ring - 316 SS, 6.872" ID, 3.826" OD

Expert Overview

This industrial Buna-N O-ring, constructed with a robust 316 stainless steel housing, offers exceptional sealing performance. Its precise dimensions ensure reliable operation in demanding chemical and high-pressure environments.

StandardASTM A106
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter6.872"
Outside Diameter3.826"
Cross Section0.175"

Detailed Engineering Specifications

Designed for demanding industrial environments, this Buna-N O-ring features a 6.872-inch inside diameter, a 3.826-inch outside diameter, and a 0.175-inch cross-section. The 316 stainless steel construction provides superior corrosion resistance, making it ideal for aggressive media and elevated temperatures. This material combination ensures excellent chemical compatibility with a wide range of oils, fuels, and hydraulic fluids, while the Buna-N elastomer offers good abrasion resistance and a broad service temperature range. Its tight tolerances contribute to leak-proof performance in critical 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 the sealing groove is clean, free of debris, and within specified dimensional tolerances. 2. Carefully inspect the O-ring for any nicks, cuts, or imperfections before installation. 3. Lubricate the O-ring and the sealing groove with a compatible lubricant to prevent damage during assembly and ensure proper seating.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

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 dry O-ring, leading to tearing or stretching.Always lubricate the O-ring and groove with a compatible lubricant.
Using excessive force, causing O-ring damage or improper seating.Apply gentle, even pressure during installation, ensuring the O-ring rolls into the groove without pinching.
Incorrect O-ring size for the groove, resulting in leaks or extrusion.Verify O-ring dimensions and groove specifications meticulously prior to installation.

Common Applications

  • Hydraulic and pneumatic systems
  • Chemical processing equipment
  • Automotive and aerospace fluid handling

⚠️ Engineering Warnings

  • Not suitable for high concentrations of ozone, UV, or weathering.
  • Consult material compatibility charts for specific chemical exposure.

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 fluid handling.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.872"CS = 0.175"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.