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

Buna-N Industrial O-Ring | 316 SS | 4.785" ID x 8.831" OD

Expert Overview

This industrial O-ring, crafted from robust Buna-N and housed within a 316 Stainless Steel retainer, offers exceptional sealing integrity. Engineered for reliability in challenging operational conditions, it ensures leak-free performance.

StandardASME B18
Material316 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter4.785"
Outside Diameter8.831"
Cross Section0.096"

Detailed Engineering Specifications

Specified by design engineers worldwide, this industrial O-ring features a 4.785-inch inside diameter, an 8.831-inch outside diameter, and a 0.096-inch cross-section, manufactured from durable Buna-N for excellent resistance to oils, fuels, and hydraulic fluids. The 316 Stainless Steel housing provides superior corrosion resistance and mechanical strength, making it ideal for high-pressure and aggressive chemical applications where standard elastomers may degrade. Its precise dimensions ensure a secure and effective seal in static and dynamic 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 mating surfaces are clean, dry, and free from debris or sharp edges. 2. Carefully install the O-ring into its designated groove, avoiding stretching or twisting. 3. Apply a thin film of compatible lubricant if recommended for the specific application to facilitate installation and ensure proper seating.

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
Overstretching the O-ring during installationInstall the O-ring without excessive tension. The dimensions are designed for a snug fit without deformation.
Using incompatible lubricants or cleaning agentsAlways verify lubricant and cleaning agent compatibility with Buna-N and 316 Stainless Steel to prevent material degradation or seal failure.

Common Applications

  • Hydraulic systems
  • Pneumatic assemblies
  • Chemical processing equipment
  • Automotive fuel and oil seals

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing acids, ketones, esters, or chlorinated hydrocarbons.
  • Ensure operating temperature remains within the specified limits for Buna-N to maintain sealing performance.

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 assemblies, Chemical processing equipment, Automotive fuel and oil seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.785"CS = 0.096"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.