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Industrial O-Ring | Buna-N | 304 Stainless Steel | 8.055" ID x 1.121" OD

Expert Overview

This industrial-grade Buna-N O-ring, encased in robust 304 stainless steel, offers superior sealing performance in corrosive and high-pressure environments. Engineered for reliability and longevity.

StandardASTM A106
Material304 Stainless Steel
FinishAnodized
GradeN/A
Inside Diameter8.055"
Outside Diameter1.121"
Cross Section0.249"

Detailed Engineering Specifications

Built to exacting engineering tolerances, this O-ring features a precise inside diameter of 8.055 inches, an outside diameter of 1.121 inches, and a cross-section of 0.249 inches. The Buna-N (Nitrile Butadiene Rubber) elastomer provides excellent resistance to oils, fuels, and general chemicals, while the 304 stainless steel housing offers exceptional corrosion resistance, making it ideal for food processing, chemical handling, and hydraulic systems where both chemical compatibility and mechanical integrity are paramount. This combination ensures a durable and dependable seal against leakage under challenging operational conditions.

🧊 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 mating surfaces are clean, dry, and free from burrs or contaminants. 2. Carefully position the O-ring within its designated groove, avoiding stretching or twisting. 3. Apply a thin, compatible lubricant if necessary to facilitate assembly and prevent damage.

Equivalent Standards (Cross-Reference)

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

Mechanical Properties

Tensile Strength75,000 psi (515 MPa)
Yield Strength30,000 psi (205 MPa)
Elongation in 2 in.40% min
HardnessRockwell B95 max

Chemical Composition

Carbon (C)0.08% max
Chromium (Cr)18.0 - 20.0%
Nickel (Ni)8.0 - 10.5%
Manganese (Mn)2.00% max

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1400°F (760°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 / SaltwaterGood
Chemical / AcidicNot Recommended

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
O-ring is twisted or stretched during installation.Ensure the O-ring is seated squarely in its groove without excessive tension or deformation.
Contamination on mating surfaces leading to seal failure.Thoroughly clean both the O-ring groove and the mating surface before assembly.

Common Applications

  • Chemical Processing Equipment
  • Food and Beverage Machinery
  • Hydraulic and Pneumatic Systems

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing agents, ketones, or esters.
  • Ensure operating temperature is within the specified range for Buna-N elastomer to maintain performance and lifespan.

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 304 Stainless Steel.

Q: What are the main applications?

A: Chemical Processing Equipment, Food and Beverage Machinery, Hydraulic and Pneumatic Systems.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 8.055"CS = 0.249"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.