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

Industrial O-Ring | Buna-N | 5.263" ID x 9.745" OD

Expert Overview

This industrial O-ring, crafted from durable Buna-N, ensures reliable sealing in demanding environments. Its precise dimensions provide a secure fit, preventing leaks and maintaining system integrity under pressure.

StandardISO 9001
MaterialPolycarbonate
FinishZinc Plated
GradeN/A
Inside Diameter5.263"
Outside Diameter9.745"
Cross Section0.232"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this Buna-N O-ring delivers exceptional sealing performance. With an inside diameter of 5.263 inches, an outside diameter of 9.745 inches, and a cross-section of 0.232 inches, it offers a precise fit for critical applications. Buna-N (Nitrile) is renowned for its excellent resistance to oils, fuels, hydraulic fluids, and many other chemicals, making it a workhorse material for a wide array of industrial sealing challenges. Its robust nature ensures longevity and dependable operation in moderate temperature ranges.

🧊 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 mating groove is clean, dry, and free from any debris or sharp edges. 2. Lubricate the O-ring and groove lightly with a compatible lubricant (refer to material compatibility charts). 3. Carefully install the O-ring into the groove, avoiding stretching or twisting beyond its natural form.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardISO 9001

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
Using excessive force during installation, leading to O-ring damage.Apply gentle pressure and ensure the O-ring seats properly without being forced.
Reusing an old or degraded O-ring for a new assembly.Always use a new, properly sized O-ring for each assembly to guarantee seal integrity.
Improper lubrication leading to installation difficulties or O-ring damage.Utilize a manufacturer-recommended, compatible lubricant and apply sparingly.

Common Applications

  • Hydraulic systems
  • Pneumatic actuators
  • Fluid power equipment
  • Automotive seals

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents, ketones, or esters.
  • Operating temperature range should not exceed the material's specified limits 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 Polycarbonate.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic actuators, Fluid power equipment, Automotive seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 5.263"CS = 0.232"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.