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Home > Products > By Application > Conformal Coatings > Synthetic Rubber Conformal Coating > HumiSeal® 1B59LU Synthetic Rubber Conformal Coating
HumiSeal® 1B59LU Synthetic Rubber Conformal Coating

HumiSeal® 1B59LU Synthetic Rubber Conformal Coating

Low moisture permeability, heat resistance, UV fluorescent

  • Product code: HumiSeal® 1B59LU
  • Manufacturer: Humiseal Synthetic Rubber
  • Package size:
  • Shelf Life: 12 months
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  • Description
  • Specification
  • TDS/MSDS
  • Related Article
  • Product Introduction:
  • HumiSeal® 1B59LU Features:
  • HumiSeal® 1B59LU Applications:
  • About Prostech

Product Introduction:

HumiSeal® 1B59LU is an advanced air-drying, single-component synthetic rubber conformal coating that combines low moisture vapor permeability with enhanced heat resistance. This coating is ideal for protecting electronics in demanding environments.

HumiSeal® 1B59LU Features:

  • Fluoresces under UV light for easy inspection
  • Compliant with RoHS Directive 2011/65/EU
  • Compliant with IPC-CC-830
  • Low moisture vapor permeability
  • Improved heat resistance

HumiSeal® 1B59LU Applications:

  • Protection for electronic assemblies
  • Moisture and heat resistance in demanding environments
  • Ideal for long-term reliability

About Prostech

Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.

With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:

  • Provide quotation, sample, TDS/MSDS, and technical consultation
  • Testing sample quality and verifying product compatibility in our laboratory
  • Customizing material formulas for special applications
  • Adapting product sizes, quantities, and packaging to meet specific needs
  • Offering expert advice on suitable equipment and automation processes
  • Delivering technical training and on-site support for optimal product use

Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.

Property Value
Density 0.79 ± 0.02 g/cm³
Solids Content 18.5 ± 1.5 % by weight
Viscosity 210 ± 70 cps
VOC 648 g/L
Drying Time to Handle 6-10 minutes
Recommended Coating Thickness 25 – 75 µm
Recommended Curing Conditions 24 hrs @ RT or 30 min @ 76°C
Time to Reach Optimum Properties 7 days
Recommended Thinners HumiSeal® T903 or T904
Recommended Stripper HumiSeal® Stripper 1080
Shelf Life at Room Temperature 12 months
Minimum Operating Temperature -65 ºC
Maximum Operating Temperature 150 ºC
Glass Transition Temperature (DSC) -49.6 °C
Dielectric Withstand Voltage >1500 volts
Dielectric Strength 85 KV/mm
Dielectric Constant (23 ºC, 1 MHz) 1.9
Dissipation Factor (23 ºC, 1 MHz) 0.004
Insulation Resistance 8.4 x 10¹² Ohms (8.4 TΩ)
Moisture Insulation Resistance 1.8 x 10¹⁰ Ohms (18 GΩ)
Surface Insulation Resistance (85 ºC / 85% RH, 50V) 9.5 log Ohms
Volume Resistivity 8.5 x 10¹⁵ Ohms·cm (8.5 PΩ)
Surface Resistivity 2.6 x 10¹⁵ Ohms per Sq. (2.6 PΩ)
Moisture Permeability 26 g/m²·day (110 µm)

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    HumiSeal® 1B59LU Synthetic Rubber Conformal Coating

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      HumiSeal® 1B59LU Synthetic Rubber Conformal Coating

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        HumiSeal® 1B59LU Synthetic Rubber Conformal Coating

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          HumiSeal® 1B59LU Synthetic Rubber Conformal Coating

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