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Industrial O-Ring, Buna-N, 8.128" ID, Carbon Steel

Expert Overview

Engineered for robust sealing, this Buna-N O-ring features a precise 8.128" inside diameter and 0.218" cross-section. Manufactured from durable carbon steel for exceptional resilience and longevity in industrial applications.

StandardISO 9001
MaterialCarbon Steel
FinishGalvanized
GradeN/A
Inside Diameter8.128"
Outside Diameter8.201"
Cross Section0.218"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this industrial O-ring is constructed from high-quality Buna-N (Nitrile Rubber) renowned for its excellent resistance to oils, fuels, and many hydraulic fluids. The carbon steel construction provides superior mechanical strength and resistance to abrasion. With an inside diameter of 8.128", an outside diameter of 8.201", and a precise cross-section of 0.218", this O-ring is designed for critical sealing applications where reliability and longevity are paramount. Its material properties make it suitable for moderate temperature and pressure environments, ensuring effective static and dynamic sealing.

🧊 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 is clean, free of debris, and properly lubricated with a compatible lubricant. 2. Carefully insert the O-ring into the groove, avoiding any stretching or twisting. 3. Assemble the mating components, ensuring even pressure distribution over the O-ring surface.

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

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
Overtightening or stretching the O-ring during installation.Install the O-ring gently without overstretching. Ensure the groove dimensions are correct for the O-ring's cross-section.
Using incompatible lubricants or cleaning agents.Always verify lubricant and cleaning agent compatibility with Buna-N material to prevent premature degradation.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Automotive components

⚠️ Engineering Warnings

  • Not suitable for high-temperature applications exceeding 250°F (121°C).
  • Avoid exposure to ozone, strong acids, and polar solvents, as Buna-N may degrade.

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 components.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.128"CS = 0.218"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.