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

Buna-N O-Ring | 4.9" ID x 8.88" OD | 316 Stainless Steel

Expert Overview

This industrial O-ring features a robust Buna-N sealing element within a high-grade 316 stainless steel housing, ensuring superior chemical resistance and durability in harsh conditions.

StandardASTM A106
Material316 Stainless Steel
FinishBlack Oxide
GradeN/A
Inside Diameter4.900"
Outside Diameter8.883"
Cross Section0.152"

Detailed Engineering Specifications

Designed for demanding industrial environments, this O-ring boasts a precise 4.900" inside diameter, an 8.883" outside diameter, and a 0.152" cross-section. The Buna-N material offers excellent resistance to oils, fuels, and hydraulic fluids, while the 316 stainless steel housing provides exceptional corrosion resistance and structural integrity. This combination makes it ideal for applications requiring reliable sealing under pressure and exposure to aggressive media, ensuring long-term performance and reduced maintenance.

🧊 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 and free of debris. 2. Carefully install the O-ring into its designated groove, avoiding stretching or twisting. 3. Apply a light, compatible lubricant if necessary for easier assembly and to prevent damage during installation.

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)16.0 - 18.0%
Nickel (Ni)10.0 - 14.0%
Molybdenum (Mo)2.0 - 3.0%

Temperature & Environment Rating

Min Operating Temp
-320°F (-195°C)
Max Continuous Temp
1500°F (815°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 / SaltwaterExcellent
Chemical / AcidicGood

Common Mistakes & How to Avoid Them

❌ Mistake✅ Correct Approach
Overtightening fasteners, compressing the O-ring beyond its elastic limit.Tighten fasteners to manufacturer's recommended torque specifications to allow for proper compression without permanent deformation.
Using incompatible lubricants or cleaning agents that degrade Buna-N or stainless steel.Consult chemical compatibility charts and use only lubricants and cleaning agents specifically approved for Buna-N and 316 stainless steel.

Common Applications

  • Hydraulic systems
  • Pneumatic equipment
  • Chemical processing equipment

⚠️ Engineering Warnings

  • Not recommended for use with strong oxidizing acids or ketones.
  • Ensure operating temperatures remain within the specified range for Buna-N to maintain sealing integrity.

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 316 Stainless Steel.

Q: What are the main applications?

A: Hydraulic systems, Pneumatic equipment, Chemical processing equipment.

Technical Schematic

O-RING SEAL DIAGRAMAS568 Standard ConfigurationID = 4.900"CS = 0.152"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.