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

Industrial Buna-N O-Ring, 316 Stainless Steel, 9.821" ID

Expert Overview

This industrial-grade Buna-N O-ring, encased in robust 316 stainless steel, offers superior sealing performance. Engineered for reliability in harsh environments, it ensures leak-free operation.

StandardASME B18
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter9.821"
Outside Diameter1.985"
Cross Section0.189"

Detailed Engineering Specifications

A proven choice for industrial professionals, this O-ring features a 9.821-inch inside diameter, a 1.985-inch outside diameter, and a 0.189-inch cross-section. The Buna-N elastomer provides excellent resistance to oils, fuels, and many hydraulic fluids, while the 316 stainless steel housing offers exceptional corrosion resistance, making it suitable for aggressive chemical environments and extended service life in demanding applications like pumps, valves, and hydraulic systems.

🧊 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 grooves are clean, dry, and free from burrs or debris. 2. Carefully lubricate the O-ring with a compatible lubricant to prevent tearing during installation. 3. Gently install the O-ring into the groove, ensuring it sits 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 incompatible lubricants that can degrade the Buna-N material.Always use lubricants specifically recommended for Buna-N elastomers and the operating environment.
Over-stretching or twisting the O-ring during installation, leading to premature failure.Install the O-ring carefully, ensuring it remains in its natural shape and seated properly within the groove.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Chemical processing
  • Automotive applications

⚠️ Engineering Warnings

  • Not suitable for use with strong acids, ketones, or esters.
  • Avoid exposure to ozone or UV radiation, which can degrade the Buna-N material.

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 applications.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 9.821"CS = 0.189"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.