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Buna-N O-Ring: 3.77" ID, 10.22" OD, 0.18" CS - Industrial Sealing

Expert Overview

Engineered for robust sealing solutions, this Buna-N O-ring provides exceptional performance in demanding industrial environments. Its precise dimensions ensure a secure fit and reliable leak prevention.

StandardDIN 933
MaterialPolycarbonate
FinishZinc Plated
GradeN/A
Inside Diameter3.770"
Outside Diameter10.222"
Cross Section0.181"

Detailed Engineering Specifications

A proven choice for industrial professionals, this Buna-N O-ring features a precise 3.770-inch inside diameter, a 10.222-inch outside diameter, and a 0.181-inch cross-section. Constructed from durable Buna-N (Nitrile Butadiene Rubber), it offers excellent resistance to oils, fuels, hydraulic fluids, and many common chemicals, making it ideal for a wide range of static and dynamic sealing applications. Its operating temperature range typically extends from -40°F to +250°F (-40°C to +121°C), providing reliable performance in diverse 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:N/A

Installation Procedure

1. Ensure the sealing groove is clean, free of debris, and properly lubricated with a compatible lubricant. 2. Carefully place the O-ring into the groove, avoiding any stretching or twisting. 3. Gently compress the O-ring into its final position, ensuring it sits flush within the groove.

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 / ExposedExcellent
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Over-stretching the O-ring during installation.Handle the O-ring with care and avoid excessive pulling. If resistance is met, re-evaluate the groove dimensions or the O-ring size.
Installing into a dirty or damaged groove.Thoroughly inspect and clean the sealing groove before installation. Any nicks or burrs can compromise the seal integrity.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Automotive fuel systems
  • Industrial pumps

⚠️ Engineering Warnings

  • Not suitable for use with ozone, ketones, esters, or chlorinated hydrocarbons.
  • Consult material compatibility charts for specific fluid applications.

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, Automotive fuel systems, Industrial pumps.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 3.770"CS = 0.181"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.