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Industrial O-Ring, Buna-N, 8.698" ID x 1.642" OD

Expert Overview

This robust industrial O-ring, crafted from durable Buna-N (Nitrile) rubber, ensures exceptional sealing performance. Its precise dimensions guarantee a secure fit in critical applications.

StandardDIN 933
MaterialPolycarbonate
FinishPlain
GradeN/A
Inside Diameter8.698"
Outside Diameter1.642"
Cross Section0.187"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this Buna-N O-ring features an inside diameter of 8.698 inches, an outside diameter of 1.642 inches, and a 0.187-inch cross-section. Buna-N, also known as Nitrile butadiene rubber, offers excellent resistance to petroleum-based oils, fuels, and hydraulic fluids, making it ideal for applications involving such media. Its inherent resilience and good mechanical properties ensure a reliable seal under moderate temperatures and pressures, preventing leaks and contamination. The precise geometric specifications are crucial for achieving optimal compression and groove conformance in static and dynamic sealing scenarios.

🧊 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:N/A

Installation Procedure

1. Ensure mating surfaces are clean, free of debris, and properly lubricated with compatible lubricant. 2. Carefully position the O-ring into its designated groove, avoiding any stretching or twisting. 3. Assemble mating components, applying even pressure to compress the O-ring and establish a seal.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Temperature & Environment Rating

Min Operating Temp
-20°F (-29°C)
Max Continuous Temp
400°F (204°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 / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening fasteners, leading to excessive compression and premature O-ring failure.Adhere to specified torque values for all fasteners to ensure controlled compression of the O-ring.
Using incompatible lubricants that degrade the Buna-N material.Consult material compatibility charts to select a lubricant suitable for Buna-N and the operating environment.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel transfer lines
  • Oil and gas equipment

⚠️ Engineering Warnings

  • Not suitable for use with ozone, strong acids, or polar solvents.
  • Continuous exposure to temperatures exceeding 250°F (121°C) may lead to material 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 Polycarbonate.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic cylinders, Fuel transfer lines, Oil and gas equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.698"CS = 0.187"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.