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Duralco™ 4538

1 of 7 products in this brand
Duralco™ 4538 offers the flexibility of silicones and the chemical stability of epoxies.

Product Type: Epoxy Adhesive

Compatible Substrates & Surfaces: Ceramic, Elastomers & Rubbers, Glass, Metal, Plastics

Cure Method: Air Dry

Chemical Family: Epoxy & Epoxy Derivatives

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Product Type

Features & Benefits

Product Highlights
  • This completely variable system can be tailored to meet any application requirement just by varying the mix ratio of resin to hardener resulting in the exact degree of flexibility required for any application.
  • It’s easy to use. Just dispense resin and hardener, mix to a uniform color and apply.
  • Adheres to most plastics, metals, ceramics, glass, rubber and even Teflon™(treated).
  • Cures at room temperature for use from -100°F to +450°F and will not soften or gum up at high temperatures.
  • Duralco 4538 offers excellent chemical resistance and high bond and peel strength.
  • It is ideal for all electric and electronics applications and can be used with most common chemicals and solvents.

Applications & Uses

Cure Method

Properties

Physical Properties
ValueUnitsTest Method / Conditions
No. of Components2.0--
Mixed Density1.0gm/cc-
Mixed Viscosity14000.0cps-
Hardness60 - 80-Shore A
Tensile Strength6000.0psi-
Thermal Conductivity7.0BTU-in/Hr.Ft2°F-
Dielectric Strength450.0volts/mil.-
Volume Resistivity10^14ohm-cm-
Elongation8.0%-
Thermal Stability (1000 hr at 200°C)0.5%-
Shrinkage0.8%-
Moisture Absorption (30 days)0.5%-
Mix Ratio100/120R/H-
Cure (at R.T.)4 - 24hours-
Cure (post cure at 250°F)60.0minutes-
Temperaturemin. 450°F-

Technical Details & Test Data

Users Report
  • Bonds: Zytel™101, Victrex™, Poly-Phenylsulfone, Nylon, Poly-Carbonates, Phenolics and other difficult materials. Successfully bonds a Teflon™ housing to a Ceramic Bushing, Ceramic magnets to a plastics holder.
  • Thermal Shock Resistance: Withstands repeated thermal cycling from -100°F to +300°F.
  • Seals: Bonded and sealed a 4 inch diameter glass sight port to a brass housing for use from -100°F to +300°F.
  • Encapsulates: Stress free potting of delicate electronic assemblies for severe thermal shock environments.
  • High Peel Strength: Adheres to Teflon™ (treated) and other hard to bond plastics.

Duralco 4538's convenient room temperature cure and superior high temperature performance makes it easy to use in any prototype or production application.

Adjusting the Flexibility

Just pick the degree of flexibility desired. Then select the resin to hardener ratio from the table.

  • Use formulation "A" for applications where additional rigidity is required.
  • Use formulation "B" for most applications.
  • Use formulation "C" or "D" for severe thermal shock, vibration or bonding of dissimilar materials that re- quire additional flexibility.
Formulation A B C D
Flexibility Rigid Flexible Soft Softest
Resin (by wt.) 100 100 100 100
Hardener (by wt.) 80 120 200 300

 

Physical Properties A B C D
Hardness (Shore A) 100 60 40 30
Tensile Strength (psi) 8000 6000 2500 1200
Elongation (%) 4 8 20 80

Packaging & Availability

Availability
Cat. No. Description Temp.
Duralco 4538-1A 1/2 Pint 450°F
Duralco 4538-1 Pint Kit 450°F
Duralco 4538-2 Gallon Kit 450°F
Pre-Measured Kits

Each Unit Contains: 1 jar of resin, 1 syringe of hardener and 1 mixing stick.

EE4538-10

10 Epox-Eez 10gm units/box

EE4538-25

10 Epox-Eez 25gm units/box