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

Brass Buna-N O-Ring 1.340" ID x 3.556" OD

Expert Overview

Engineered for robust sealing in challenging industrial settings, this Buna-N O-ring offers superior resistance to oils and fuels. Its brass construction ensures compatibility in specific corrosive environments.

StandardISO 9001
MaterialBrass
FinishZinc Plated
GradeN/A
Inside Diameter1.340"
Outside Diameter3.556"
Cross Section0.174"

Detailed Engineering Specifications

Designed for demanding industrial environments, this O-ring features a precise Inside Diameter of 1.340 inches, an Outside Diameter of 3.556 inches, and a Cross Section of 0.174 inches. Constructed from Buna-N (Nitrile Butadiene Rubber), it provides excellent resistance to petroleum-based oils, fuels, and hydraulic fluids. The brass material offers inherent corrosion resistance in certain media, making it suitable for specialized chemical processing and fluid handling systems where non-metallic seals are not ideal.

🧊 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. Inspect the groove and mating surfaces for cleanliness and damage. 2. Lightly lubricate the O-ring with a compatible lubricant. 3. Carefully install the O-ring into the designated groove, ensuring it is not twisted or stretched excessively.

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

Chemical Composition

Copper (Cu)60.0 - 63.0%
Zinc (Zn)Balance
Lead (Pb)2.5 - 3.7%

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
Overstretching the O-ring during installation.Ensure the O-ring is not stretched beyond its elastic limit; use appropriate lubrication and installation tools.
Installing into a dirty or damaged groove.Thoroughly clean and inspect the groove for any debris, nicks, or sharp edges that could compromise the seal.

Common Applications

  • Hydraulic systems
  • Pneumatic systems
  • Chemical processing equipment
  • Fuel handling

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents or certain aggressive chemicals.
  • Verify material compatibility with the specific fluid and operating temperature range.

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 Brass.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic systems, Chemical processing equipment, Fuel handling.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 1.340"CS = 0.174"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.