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Buna-N Industrial O-Ring | 1.903" ID | Carbon Steel

Expert Overview

This Buna-N industrial O-ring, constructed from resilient carbon steel, ensures reliable sealing in high-pressure and challenging operational settings. Engineered for longevity and chemical resistance.

StandardASTM A106
MaterialCarbon Steel
FinishZinc Plated
GradeN/A
Inside Diameter1.903"
Outside Diameter0.572"
Cross Section0.201"

Detailed Engineering Specifications

Designed for demanding industrial environments, this Buna-N O-ring features an inside diameter of 1.903 inches, an outside diameter of 0.572 inches, and a precise cross-section of 0.201 inches. The Buna-N (Nitrile Butadiene Rubber) material offers excellent resistance to oils, fuels, and many hydraulic fluids, making it suitable for a wide range of dynamic and static sealing applications. The carbon steel construction provides robust mechanical strength and corrosion resistance in moderately aggressive chemical environments. This combination ensures superior performance in pumps, valves, cylinders, and general industrial machinery.

🧊 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 sealing groove is clean, dry, and free of any debris or sharp edges. 2. Carefully lubricate the O-ring and the groove with a compatible lubricant to prevent damage during installation. 3. Gently install the O-ring into the groove, ensuring it is seated evenly without stretching or twisting.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

Mechanical Properties

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

Chemical Composition

Carbon (C)0.28 - 0.55%
Manganese (Mn)0.60 - 0.90%
Phosphorus (P)0.04% max
Sulfur (S)0.05% max

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
Overtightening during installation, leading to extrusion or premature failure.Install with appropriate torque, ensuring the O-ring is properly seated without excessive compression.
Using incompatible lubricants or cleaning agents that degrade the Buna-N material.Refer to the material compatibility chart for Buna-N to select appropriate lubricants and cleaning solutions.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel and oil systems
  • General industrial machinery

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents or ketones.
  • Operating temperature range must be adhered to for optimal performance and lifespan.

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 Carbon Steel.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic cylinders, Fuel and oil systems, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 1.903"CS = 0.201"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.