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

Buna-N Industrial O-Ring | Carbon Steel | 7.805" ID x 8.079" OD

Expert Overview

This robust industrial O-ring, crafted from durable Buna-N material and a Carbon Steel housing, provides exceptional sealing in high-pressure and demanding environments. Engineered for precise fit and longevity.

StandardDIN 933
MaterialCarbon Steel
FinishAnodized
GradeN/A
Inside Diameter7.805"
Outside Diameter8.079"
Cross Section0.244"

Detailed Engineering Specifications

Engineered for reliability and performance, this industrial O-ring boasts an Inside Diameter of 7.805 inches and an Outside Diameter of 8.079 inches, with a precise Cross Section of 0.244 inches. The Buna-N elastomer offers excellent resistance to oils, fuels, and many solvents, making it suitable for a wide range of chemical environments. The Carbon Steel housing provides superior structural integrity and dimensional stability, particularly in applications requiring robust support and resistance to extrusion. This combination ensures a secure, leak-free seal under challenging operational conditions, including moderate temperatures and pressures.

🧊 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. Inspect the gland and mating surfaces for cleanliness and absence of debris. 2. Carefully place the O-ring into the gland, ensuring it is not twisted or overstretched. 3. Apply a light coat of compatible lubricant if necessary to facilitate seating and prevent damage during assembly.

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 / ExposedModerate
Marine / SaltwaterNot Recommended
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening or excessive force during installation, leading to O-ring extrusion or damage.Apply only the necessary force to seat the O-ring properly. Refer to gland design specifications for recommended compression.
Using incompatible lubricants or cleaning agents that can degrade the Buna-N material.Always consult the material compatibility chart for Buna-N and select lubricants and cleaning agents approved for its use.

Common Applications

  • Hydraulic systems
  • Pneumatic actuators
  • Fuel and oil lines
  • General industrial machinery

⚠️ Engineering Warnings

  • Not recommended for high-temperature applications or exposure to ozone, UV, or weathering.
  • Ensure proper gland design and tolerances to prevent premature failure or leakage.

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 actuators, Fuel and oil lines, General industrial machinery.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.805"CS = 0.244"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.