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 1A68HUM 1A68

    HumiSeal® 1A68 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications.

    Contact Us for Price
    Feature Image
    HumiSealHUM 1C55HUM 1C55

    HumiSeal® 1C55 is a single component, VOC-free, low viscosity, fast thermal curing silicone conformal coating.

    Contact Us for Price
    Feature Image
    HumiSealHUM 1C63HUM 1C63

    HumiSeal® 1C63 is a UV/RTV curing, oxime-type cure silicone conformal coating which provides excellent moisture and environmental protection for printed circuit assemblies.

    Contact Us for Price
    Feature Image
    Contact Us for Price
    Feature Image
    HumiSealHUM 1B12HUM 1B12

    HumiSeal® 1B12 is a single component, fast drying, low viscosity, acrylic conformal coating intended for use on printed circuit assemblies.

    Contact Us for Price