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

Buna-N O-Ring | 8.940" OD | 316 Stainless Steel

Expert Overview

This robust Buna-N O-ring, constructed from premium 316 stainless steel, offers exceptional sealing performance. Engineered for reliability, it ensures leak-free operation in a wide array of industrial applications.

StandardASTM A106
Material316 Stainless Steel
FinishZinc Plated
GradeN/A
Inside Diameter0.809"
Outside Diameter8.940"
Cross Section0.113"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this Buna-N O-ring (Nitrile Butadiene Rubber) boasts a precise 8.940" outside diameter, 0.809" inside diameter, and a 0.113" cross-section. The 316 stainless steel construction provides superior corrosion resistance, making it ideal for use in aggressive chemical environments and high-temperature applications. Its excellent resistance to oils, fuels, and hydraulic fluids, coupled with its robust material properties, ensures a long service life and dependable sealing under demanding operational conditions.

🧊 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 properly lubricated. 2. Carefully place the O-ring into the groove, avoiding stretching or twisting. 3. Gently compress the O-ring to its seated position, verifying it sits flush within the groove.

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
Overtightening fasteners, leading to O-ring extrusion.Adhere to specified torque values for all fasteners. Use torque wrenches for accuracy.
Using incompatible lubricants that degrade the Buna-N material.Consult material compatibility charts and use only approved lubricants for Buna-N.
Damage during installation due to sharp edges or improper handling.Inspect the sealing surface and O-ring for any defects before installation. Use appropriate tools to avoid snagging.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Chemical processing
  • Automotive seals
  • Oil and gas exploration

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents or ketones.
  • Exposure to ozone and UV radiation may accelerate degradation.

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 equipment, Chemical processing, Automotive seals, Oil and gas exploration.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 0.809"CS = 0.113"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.