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Buna-N Brass O-Ring - 7.337" ID, 10.946" OD

Expert Overview

This industrial O-ring, constructed from Buna-N with a brass component, provides robust sealing for demanding fluid power and hydraulic systems. Engineered for reliable performance under pressure.

StandardASME B18
MaterialBrass
FinishZinc Plated
GradeN/A
Inside Diameter7.337"
Outside Diameter10.946"
Cross Section0.261"

Detailed Engineering Specifications

Purpose-built for heavy-duty applications, this Buna-N O-ring features a 7.337-inch inside diameter, 10.946-inch outside diameter, and a 0.261-inch cross-section. The Buna-N (Nitrile Butadiene Rubber) material offers excellent resistance to petroleum-based oils, hydraulic fluids, and water, making it suitable for a wide range of industrial environments. The integrated brass component enhances its structural integrity and compatibility in specific corrosive or high-temperature scenarios where traditional metal might be unsuitable. This O-ring is critical for maintaining seal integrity in pumps, valves, cylinders, and other critical machinery components.

🧊 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 and mating surfaces are clean and free of debris. 2. Lubricate the O-ring and groove with a compatible lubricant. 3. Carefully install the O-ring into the designated groove, avoiding any stretching or twisting. 4. Ensure proper seating and alignment 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

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
Using excessive force during installation, leading to O-ring deformation or damage.Apply gentle, consistent pressure. Utilize appropriate installation tools if necessary.
Installing a dry O-ring, which can cause friction and premature wear.Always lubricate the O-ring and groove with a compatible lubricant before installation.
Using an incompatible lubricant that degrades the Buna-N material.Consult material compatibility charts to select a lubricant specifically designed for Buna-N.

Common Applications

  • Hydraulic Systems
  • Pneumatic Systems
  • Fluid Power Equipment
  • Pumps and Valves
  • Machinery Seals

⚠️ Engineering Warnings

  • Not suitable for use with ozone, strong acids, or polar solvents.
  • Ensure 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, Fluid Power Equipment, Pumps and Valves, Machinery Seals.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.337"CS = 0.261"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.