Need Help? Call Customer Service (781) 332-0707
  • Contact us
  • Shop
  • Distributor Locator
  • Sign in
Express OrderCartQuote
  1. Home/
  2. Products/
  3. Conformal Coatings/
  4. Urethanes and Polyurethanes/
  5. HUM 1A27LU

Memberships & Certifications

Image alt
Image alt
Image alt
Image alt
Image alt
Image alt

A Global Leader

Chase Corporation is a global specialty chemicals company that is a leading manufacturer of protective materials for high-reliability applications across diverse market sectors.

LinkedinYouTube

© Copyright 2026 Chase Corp. All Rights Reserved.

Links
  • Brands
  • Markets
  • Support
  • About Us
  • Careers
  • Legal
  • Do Not Sell or Share My Personal Information
  • Cookie Settings
Privacy Disclosures
  • Accessibility Statement
  • Privacy Policy

© Copyright 2026 Chase Corp. All Rights Reserved.

Logo alt
Logo alt
  • Products
  • Brands
  • Markets
  • Solutions
  • Support
  • Expert Insights
  • About Us
  • We Make a Material Difference
  • HumiSeal

    HUM 1A27LU

    HUM 1A27LU
    HumiSeal

    HUM 1A27LU

    HUM 1A27LU

    HumiSeal® 1A27LU is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal® 1A27LU contains no free isocyanates and fluoresces under UV light for ease of inspection. HumiSeal® 1A27LU coating is RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.

    Overview

    HumiSeal® 1A27LU is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal® 1A27LU contains no free isocyanates and fluoresces under UV light for ease of inspection. HumiSeal® 1A27LU coating is RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.

    View SpecificationsFind SDSRequest SampleDownload TDS

    Have a Question and Need to Speak to an Expert?

    Our experts are ready to answer your questions!

    Contact Us
    Chase corp logo
    Contact Us
    • Chase Global Operations Center and Corporate Headquarters
    • 375 University Ave.
      Westwood, MA 02090
    • Corp Offices: (+1) 781-332-0700
    • Corp Fax: (+1) 781-332-0701
    • Customer Service: (+1) 781-332-0707

    • Overview / Specs
    • Downloads
    • Related products

    HumiSeal® 1A27LU is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal® 1A27LU contains no free isocyanates and fluoresces under UV light for ease of inspection. HumiSeal® 1A27LU coating is RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.

    Overview

    HumiSeal® 1A27LU is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal® 1A27LU contains no free isocyanates and fluoresces under UV light for ease of inspection. HumiSeal® 1A27LU coating is RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.

    Specifications

    ChemistryPolyurethane
    Curing ConditionsAir
    Material30 days at RT / 30 hours @ 76°C / 20 hours @ 88°C
    Volatile Organic Compounds480 g/l
    Cure Time30 days at RT / 30 hours @ 76°C / 20 hours @ 88°C
    Recommended Thickness25 - 75 microns

    Downloads

    • HUM 1A27LU Technical Data Sheet

      PDFDownload
    • HumiSeal RoHS Certificate Urethane Conformal Coatings

      PDFDownload
    • HumiSeal REACH Statement

      PDFDownload

    Related products

    Feature Image
    HumiSealHUM 1C49LVHUM 1C49LV

    HumiSeal® 1C49LV is a moisture curing, low viscosity, VOC-free silicone conformal coating which provides excellent moisture and environmental protection for printed circuit assemblies.

    Contact Us for Price
    View options
    Feature Image
    HumiSealHUM 1C49HUM 1C49

    HumiSeal® 1C49 is a moisture curing, high build, VOC-free silicone conformal coating which provides excellent moisture and environmental protection for printed circuit assemblies.

    Contact Us for Price
    View options
    Feature Image
    HumiSealHUM 1A20RHUM 1A20R

    HumiSeal® 1A20R is a single component, chemically resistant, fast curing polyurethane conformal coating. HumiSeal® 1A20R fluoresces under UV light for ease of inspection.

    Contact Us for Price
    Feature Image
    Contact Us for Price
    Feature Image
    HumiSealHUM 1B51HUM 1B51

    HumiSeal® 1B51 is a fast drying, single component, synthetic rubber conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies.

    Contact Us for Price
    Feature Image
    HumiSealHUM 1C51HUM 1C51

    HumiSeal® 1C51 is a single component, VOC-free, fast thermal curing silicone conformal coating.

    Contact Us for Price
    View options