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

Buna-N O-Ring, 304 Stainless Steel, 2.502" OD

Expert Overview

Engineered for superior sealing, this Buna-N O-ring, encased in durable 304 stainless steel, provides exceptional resistance to chemicals and extreme temperatures. Its precise dimensions ensure a reliable, leak-free fit in critical applications.

StandardASME B18
Material304 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter6.178"
Outside Diameter2.502"
Cross Section0.071"

Detailed Engineering Specifications

Trusted by engineers across multiple sectors, this industrial O-ring features a robust 304 stainless steel construction for enhanced durability and chemical resistance. The Buna-N sealing element offers excellent performance across a wide temperature range, making it ideal for demanding applications. With an inside diameter of 6.178 inches, an outside diameter of 2.502 inches, and a precise cross-section of 0.071 inches, it guarantees a secure and leak-proof seal in hydraulic, pneumatic, and fluid handling systems.

🧊 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 groove and mating surfaces for cleanliness and damage. 2. Lightly lubricate the O-ring with a compatible lubricant if recommended for the application. 3. Carefully install the O-ring into the designated groove, ensuring it is seated without twisting or stretching.

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
Using excessive force during installation, leading to O-ring damage.Apply gentle, even pressure and utilize appropriate tools if necessary to avoid pinching or tearing the O-ring.
Incorrect lubrication or using incompatible lubricants.Always consult the material compatibility chart and use only lubricants specifically recommended for Buna-N and the application environment.

Common Applications

  • Hydraulic Systems
  • Pneumatic Cylinders
  • Fluid Transfer Equipment

⚠️ Engineering Warnings

  • Ensure compatibility of the O-ring material (Buna-N) with the fluid or chemical being sealed.
  • Avoid exposure to ozone, UV, or weathering, as these 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 304 Stainless Steel.

Q: What are the main applications?

A: Hydraulic Systems, Pneumatic Cylinders, Fluid Transfer Equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 6.178"CS = 0.071"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.