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Industrial O-Ring, Buna-N, 7.556" ID x 5.406" OD | 304 SS

Expert Overview

Engineered for superior sealing, this Buna-N O-ring features precise dimensions and a durable 304 stainless steel construction, ensuring reliable performance in harsh industrial applications. Ideal for fluid containment and pressure sealing.

StandardASME B18
Material304 Stainless Steel
FinishZinc Plated
GradeN/A
Inside Diameter7.556"
Outside Diameter5.406"
Cross Section0.122"

Detailed Engineering Specifications

Precision-manufactured to tight tolerances, this industrial O-ring boasts an inside diameter of 7.556 inches, an outside diameter of 5.406 inches, and a cross-section of 0.122 inches. The Buna-N (Nitrile) elastomer offers excellent resistance to oils, fuels, and many hydraulic fluids, while the 304 stainless steel housing provides robust structural integrity and corrosion resistance. This combination ensures dependable sealing performance in a wide range of operating temperatures and pressures, making it suitable for demanding industrial environments where chemical compatibility and mechanical strength are critical.

🧊 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 mating groove is clean, free of debris, and meets design specifications. 2. Carefully stretch the O-ring over the component, avoiding excessive force or sharp tools that could nick or cut the elastomer. 3. Seat the O-ring fully within its designated groove, confirming it is not twisted or pinched.

Equivalent Standards (Cross-Reference)

Standard SystemDesignation
ISO EquivalentISO 9001:2015 Mfg
DIN EquivalentIndustry Standard
Primary StandardASME B18

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
Overtightening the assembly, which can excessively compress and extrude the O-ring.Follow torque specifications for the assembly and ensure the groove design provides adequate gland fill to prevent extrusion.
Using incompatible lubricants or cleaning agents that degrade the Buna-N material.Consult a chemical compatibility chart for Buna-N and use only approved lubricants or cleaning agents.
Installing a twisted or pinched O-ring, leading to immediate seal failure.Visually inspect the O-ring before and during installation to ensure it is seated flat and uniformly within the groove.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Fluid power applications
  • Automotive sealing
  • Chemical processing equipment

⚠️ Engineering Warnings

  • Not suitable for high-temperature steam or applications requiring resistance to ozone, ketones, or esters.
  • Ensure proper gland design and surface finish for optimal sealing performance.

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: Hydraulic systems, Pneumatic equipment, Fluid power applications, Automotive sealing, Chemical processing equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 7.556"CS = 0.122"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.