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

Industrial Buna-N O-Ring | 2.154" ID x 0.320" OD | Nylon

Expert Overview

This industrial O-ring, constructed from Nylon-reinforced Buna-N, provides reliable sealing in a variety of demanding applications. Its robust design ensures excellent resistance to common industrial fluids and pressures.

StandardASME B18
MaterialNylon
FinishAnodized
GradeN/A
Inside Diameter2.154"
Outside Diameter0.320"
Cross Section0.180"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this Buna-N O-ring features an Inside Diameter of 2.154 inches, an Outside Diameter of 0.320 inches, and a cross-section of 0.180 inches. The nylon reinforcement significantly enhances its tensile strength and abrasion resistance, making it ideal for high-pressure and dynamic sealing applications. Buna-N (Nitrile Butadiene Rubber) offers excellent resistance to petroleum-based oils, greases, hydraulic fluids, and water, operating effectively within a temperature range of -40°F to 257°F (-40°C to 125°C). Its resilience and durability make it a cost-effective solution for maintaining seal integrity in critical systems.

🧊 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 and free from debris or sharp edges. 2. Carefully stretch the O-ring over the smaller component or into the groove, avoiding excessive force or the use of sharp tools. 3. Verify the O-ring is seated evenly and without twists within the groove before assembling mating components.

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 a size that is too small or too large for the groove.Always verify the O-ring's dimensions against the groove specifications to ensure a proper fit. A groove that is too shallow will not provide adequate compression, while a groove that is too deep will not allow for sufficient squeeze.
Twisting the O-ring during installation.Install the O-ring carefully, ensuring it lies flat within the groove without any twists or kinks. Twisted O-rings can lead to immediate leakage and premature failure.
Installing the O-ring into a dirty or damaged groove.Thoroughly clean the groove and inspect it for any burrs, nicks, or damage that could compromise the seal or cut the O-ring.

Common Applications

  • Hydraulic systems
  • Pneumatic cylinders
  • Fuel and oil lines
  • Automotive seals
  • Industrial pumps

⚠️ Engineering Warnings

  • Not suitable for applications involving strong acids, ketones, esters, or high-ozone environments.
  • Ensure compatibility with the specific fluid and operating temperature range before installation.

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 cylinders, Fuel and oil lines, Automotive seals, Industrial pumps.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 2.154"CS = 0.180"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.