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

Buna-N O-Ring: 2.658" ID x 10.025" OD x 0.119" CS

Expert Overview

This industrial Buna-N O-ring provides reliable sealing in a wide range of applications. Its durable nitrile rubber construction ensures excellent resistance to oils and fuels, making it ideal for critical equipment.

StandardASME B18
MaterialPolycarbonate
FinishAnodized
GradeN/A
Inside Diameter2.658"
Outside Diameter10.025"
Cross Section0.119"

Detailed Engineering Specifications

Manufactured under strict quality controls, this Buna-N O-ring boasts an inside diameter of 2.658 inches, an outside diameter of 10.025 inches, and a cross-section of 0.119 inches. Composed of nitrile butadiene rubber (Buna-N), it offers superior resistance to petroleum-based oils, greases, hydraulic fluids, and fuels. Its operating temperature range is typically -30°F to +250°F (-34°C to +121°C), making it suitable for diverse environmental conditions and applications requiring a robust, yet flexible sealing solution.

🧊 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 burrs or debris. 2. Carefully inspect the O-ring for any damage or defects before installation. 3. Gently install the O-ring into the groove, avoiding stretching or twisting, and ensure it sits flush within the cavity.

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
Installing a damaged or defective O-ring.Always visually inspect the O-ring for nicks, cuts, or abrasions before installation.
Overstretching or twisting the O-ring during installation.Use proper tools and technique to ensure the O-ring is seated smoothly without undue stress on the material.
Installing into a contaminated or damaged groove.Thoroughly clean and inspect the sealing groove for any imperfections that could compromise seal integrity.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive seals
  • Oil and gas industry
  • General industrial machinery

⚠️ Engineering Warnings

  • Not suitable for use with ketones, esters, or certain chlorinated solvents.
  • Avoid prolonged exposure to direct sunlight or ozone, which can degrade Buna-N.

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 equipment, Automotive seals, Oil and gas industry, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.658"CS = 0.119"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.