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Industrial Buna-N O-Ring 4.981" ID | Nylon

Expert Overview

This industrial Buna-N O-ring is engineered for robust sealing in demanding environments. Its precise dimensions and durable Nylon construction ensure reliable performance and extended service life in critical applications.

StandardASTM A106
MaterialNylon
FinishPassivated
GradeN/A
Inside Diameter4.981"
Outside Diameter4.776"
Cross Section0.104"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N O-ring (Nylon material) features a nominal inside diameter of 4.981 inches, an outside diameter of 4.776 inches, and a cross-section of 0.104 inches. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to oils, fuels, hydraulic fluids, and many solvents, making it ideal for general-purpose industrial sealing. The inherent strength of the Nylon substrate enhances its durability and resistance to extrusion under pressure. It is designed for static and dynamic sealing applications where a reliable barrier against leakage is paramount, commonly found in hydraulic systems, pneumatic equipment, and automotive applications.

🧊 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, dry, and free of debris. 2. Carefully lubricate the O-ring with a compatible lubricant to prevent damage during installation. 3. Gently install the O-ring into the groove, avoiding stretching or twisting, ensuring it sits flush.

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

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
Overstretching the O-ring during installation.Lubricate the O-ring and groove, and carefully seat the O-ring without excessive pulling.
Installing into a dirty or damaged groove.Thoroughly clean and inspect the sealing groove for any imperfections before installation.

Common Applications

  • Hydraulic cylinder seals
  • Pneumatic actuator seals
  • Fuel and oil transfer systems
  • General industrial machinery sealing

⚠️ Engineering Warnings

  • Not suitable for exposure to ozone, UV, or weathering.
  • Avoid contact with strong acids, esters, ketones, and chlorinated hydrocarbons.

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 Nylon.

Q: What are the main applications?

A: Hydraulic cylinder seals, Pneumatic actuator seals, Fuel and oil transfer systems, General industrial machinery sealing.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.981"CS = 0.104"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.