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Industrial O-Ring, Buna-N, Carbon Steel - 7.787" ID

Expert Overview

This robust Buna-N industrial O-ring, featuring a durable carbon steel core, provides superior sealing in high-pressure and demanding applications. Engineered for exceptional resilience and longevity.

StandardDIN 933
MaterialCarbon Steel
FinishGalvanized
GradeN/A
Inside Diameter7.787"
Outside Diameter10.265"
Cross Section0.131"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this industrial O-ring boasts a precise Inside Diameter of 7.787", an Outside Diameter of 10.265", and a Cross Section of 0.131". Constructed with a robust Buna-N elastomer bonded to a high-strength carbon steel core, it offers excellent resistance to oils, fuels, and many hydraulic fluids. This design ensures superior compression set resistance and a reliable seal under challenging operating conditions, making it ideal for hydraulic systems, pneumatic equipment, and general industrial fluid power applications where durability and chemical compatibility are paramount.

🧊 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 sealing groove is clean, dry, and free of debris. Inspect the groove for any damage or imperfections. 2. Carefully place the O-ring into the groove, ensuring it is seated evenly and not twisted. 3. Apply a thin layer of compatible lubricant to the O-ring and the mating surface before assembly to prevent damage during installation and operation.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardDIN 933

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 / 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 damage or extrusion.Handle the O-ring with care and use appropriate tools for installation. Avoid stretching or deforming the O-ring beyond its designed limits.
Installing into a dirty or damaged groove, compromising the seal integrity.Thoroughly clean and inspect the sealing groove before installation. Address any nicks, burrs, or corrosion that could lead to leaks.

Common Applications

  • Hydraulic Systems
  • Pneumatic Equipment
  • Fluid Power Systems

⚠️ Engineering Warnings

  • Ensure material compatibility with the specific fluid or gas being sealed.
  • Avoid exposure to ozone, UV, or weathering, which can degrade Buna-N over time.

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, Fluid Power Systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.787"CS = 0.131"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.