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Buna-N O-Ring, 316 Stainless Steel, 8.681" ID x 5.505" OD

Expert Overview

This industrial Buna-N O-ring, encased in robust 316 stainless steel, offers exceptional sealing integrity. Its precise dimensions ensure a reliable fit for critical fluid and gas containment applications.

StandardISO 9001
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter8.681"
Outside Diameter5.505"
Cross Section0.077"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring is constructed with a resilient Buna-N sealing element within a durable 316 stainless steel housing. The specified dimensions of 8.681" inside diameter, 5.505" outside diameter, and a 0.077" cross-section are critical for maintaining a leak-proof seal under significant pressure and temperature variations. Buna-N exhibits excellent resistance to oils, fuels, and hydraulic fluids, while 316 stainless steel provides superior corrosion resistance, making this assembly ideal for chemical processing, oil and gas, and automotive industries where chemical compatibility and longevity 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 surfaces are clean, dry, and free from debris. 2. Carefully position the O-ring into the groove, avoiding any twisting or stretching. 3. Apply gentle, even pressure to seat the O-ring fully within the groove before assembling the mating component.

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
O-ring twisting or rolling out of the groove during assembly.Ensure proper groove lubrication and utilize a tool to guide the O-ring into place, preventing it from deforming.
Using excessive force, which can damage the O-ring or groove.Follow specified torque values for the mating components and handle the O-ring with care.

Common Applications

  • Hydraulic Systems
  • Pneumatic Systems
  • Fluid Transfer Lines
  • Chemical Processing Equipment

⚠️ Engineering Warnings

  • Do not expose to temperatures exceeding the specified operating range for Buna-N.
  • Verify chemical compatibility with the specific media being sealed before installation.

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 Systems, Fluid Transfer Lines, Chemical Processing Equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.681"CS = 0.077"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.