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

Buna-N O-Ring, 7.52" ID x 10.58" OD, Carbon Steel

Expert Overview

This industrial O-ring, constructed from durable Buna-N material and featuring a robust carbon steel composition, provides exceptional sealing capabilities for critical fluid and gas applications. Its precise dimensions ensure a reliable, long-lasting seal.

StandardASTM A106
MaterialCarbon Steel
FinishPassivated
GradeN/A
Inside Diameter7.520"
Outside Diameter10.580"
Cross Section0.200"

Detailed Engineering Specifications

Engineered for reliability and performance, this Buna-N O-ring boasts an Inside Diameter of 7.520 inches, an Outside Diameter of 10.580 inches, and a precise Cross Section of 0.200 inches. The Buna-N (Nitrile) elastomer offers excellent resistance to oils, fuels, and hydraulic fluids, making it suitable for a wide range of industrial applications. The carbon steel material enhances its structural integrity and resistance to mechanical stress. Operating temperature range typically spans from -30°F to 250°F (-34°C to 121°C), with excellent compression set resistance. Ideal for static and dynamic sealing in pumps, valves, engines, and hydraulic 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:Yes

Installation Procedure

1. Ensure the groove and mating surfaces are clean, free of debris, and properly lubricated. 2. Carefully install the O-ring into the designated groove, avoiding any twisting or stretching. 3. Assemble the mating components, ensuring even pressure is applied to seat the O-ring properly without damage.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASTM A106

Mechanical Properties

Tensile StrengthStandard Commercial Spec
Yield StrengthStandard Commercial Spec
HardnessVaries by specific batch

Chemical Composition

Carbon (C)0.28 - 0.55%
Manganese (Mn)0.60 - 0.90%
Phosphorus (P)0.04% max
Sulfur (S)0.05% max

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 the wrong O-ring size for the groove, leading to leaks or premature failure.Always verify O-ring dimensions against the groove specifications before installation.
Lubricating the O-ring with incompatible fluids, which can degrade the elastomer.Use only compatible lubricants recommended for Buna-N and the specific application fluids.
Twisting or kinking the O-ring during installation, causing immediate seal failure.Handle the O-ring carefully and ensure it sits flat and uncompromised in the groove.

Common Applications

  • Hydraulic Systems
  • Pneumatic Equipment
  • Automotive Engine Seals
  • Oil and Gas Equipment
  • Industrial Pumps and Valves

⚠️ Engineering Warnings

  • Not suitable for use with strong oxidizing agents or ozone.
  • Prolonged exposure to UV light can degrade Buna-N material.
  • Ensure compatibility with specific operating temperatures and media.

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 Carbon Steel.

Q: What are the main applications?

A: Hydraulic Systems, Pneumatic Equipment, Automotive Engine Seals, Oil and Gas Equipment, Industrial Pumps and Valves.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.520"CS = 0.200"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.