Home > Sealing > Industrial O-Ring, Buna-N

Buna-N Nylon Industrial O-Ring | 4.487" ID x 7.742" OD x 0.074" CS

Expert Overview

This industrial O-ring, crafted from robust Buna-N Nylon, ensures reliable sealing in demanding environments. Its precise dimensions provide a secure fit for critical applications.

StandardASME B18
MaterialNylon
FinishPlain
GradeN/A
Inside Diameter4.487"
Outside Diameter7.742"
Cross Section0.074"

Detailed Engineering Specifications

A high-performance industrial component, this Buna-N Nylon O-ring is engineered for superior sealing performance and durability. With an inside diameter of 4.487 inches, an outside diameter of 7.742 inches, and a precise 0.074-inch cross-section, it offers a highly effective seal in a wide range of industrial applications. The Buna-N material provides excellent resistance to oils, fuels, and certain solvents, while the integrated nylon reinforcement enhances its tensile strength and abrasion resistance. This combination makes it ideal for use in hydraulic systems, pneumatic equipment, automotive components, and general industrial machinery where a robust and long-lasting seal is 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:N/A

Installation Procedure

1. Ensure the groove is clean, dry, and free from debris or sharp edges. 2. Lightly lubricate the O-ring with a compatible lubricant suitable for Buna-N. 3. Carefully insert the O-ring into the groove, avoiding twisting or stretching beyond its elastic limit.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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
Using excessive force during installation, leading to O-ring damage.Apply gentle, even pressure and ensure the O-ring seats properly without deformation.
Installing the O-ring in a contaminated or damaged groove.Thoroughly inspect and clean the groove before installation to prevent leaks and premature wear.

Common Applications

  • Hydraulic Systems
  • Pneumatic Equipment
  • Automotive Components

⚠️ Engineering Warnings

  • Not recommended for exposure to ozone, strong acids, or polar solvents.
  • Verify material compatibility with specific operating fluids and temperatures.

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 Systems, Pneumatic Equipment, Automotive Components.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.487"CS = 0.074"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.