MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 165,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
Ensinger PEI
Aptek 2503R-A/B Premeasured conformal urethane coating repair kit
Categories: Polymer; Adhesive; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Adhesive

Material Notes: APTEK 2503-A/B is an unfilled, two component, electrically insulating, transparent, flexible urethane coating system designed for the encapsulation and protection of electrical/electronic components mounted on printed circuit boards.

Ideal for repair-ready-to-use; Fully compatible with APTEK 2503-A/B conformal coating as well as other commercially available urethane coatings; Excellent reversion resistance for good physical stability under high heat and humidity environments; Tg below -70ÂșC for excellent low temperature cycling, storage and performance; Excellent substrate adhesion, superior to silicones; Exceeds NASA outgassing requirements for high vacuum environments; Fluoresces under black-light (UV) to facilitate QC inspection of coating coverage of repaired components/substrates.

APTEK 2503R-A is an unfilled polyol resin containing solvent and is thus considered a flammable liquid and should be treated with caution. . APTEK 2503R-B is an organic isocyanate and is safe to handle when used properly. .

Information provided by Aptek Laboratories, Inc.

Available Properties
  • Outgassing - Total Mass Loss, Cured property; at 10E-6 torr; ASTM E595
  • Collected Volatile Condensable Material, Cured property; at 10E-6 torr; ASTM E595
  • Hardness, Shore A, Cured property; ASTM D2240
  • Tensile Strength, Ultimate, Cured property; ASTM D412
  • Elongation at Break, Cured property; ASTM D412
  • CTE, linear, JMTP P200, Cured property; alpha 1
  • Glass Transition Temp, Tg, Cured property; JMTP P200
  • Flash Point, A Component; ASTM D92
  • Flash Point, B Component; ASTM D92
  • Transmission, Visible, transparent; thickness not quantified
  • Processing Temperature, Cure 8 hrs
  • Processing Temperature, Cure 5 hrs
  • Processing Temperature, Cure 2 hrs
Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
), please click the button below.

Manufacturer Notes:

Category Notes

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.


Specialty Compounds RTP Company
Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2023 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.