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Home > Products > By Application > Conformal Coatings > Synthetic Rubber Conformal Coating > HumiSeal® 1B51 Synthetic Rubber Conformal Coating
HumiSeal® 1B51 Synthetic Rubber Conformal Coating

HumiSeal® 1B51 Synthetic Rubber Conformal Coating

Moisture and environmental protection, excellent flexibility

  • Product code: HumiSeal® 1B51
  • Manufacturer: Humiseal
  • Package size:
  • Shelf Life: 18 months
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  • Description
  • Specification
  • TDS/MSDS
  • Related Article
  • Product Introduction:
  • HumiSeal® 1B51 Features:
  • HumiSeal® 1B51 Applications:
  • About Prostech

Product Introduction:

HumiSeal® 1B51 is a high-performance, fast-drying synthetic rubber conformal coating that ensures excellent moisture and environmental protection for printed circuit assemblies. Designed for durability, it offers superior flexibility and is easy to repair.

HumiSeal® 1B51 Features:

  • Low moisture vapor permeability
  • Fully compliant with RoHS Directive 2002/95/EC
  • Easy to repair
  • Long-term protection from environmental damage

HumiSeal® 1B51 Applications:

  • Protects electronic devices from moisture
  • Ideal for printed circuit assemblies
  • Widely used in various industries

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 0.89 ± 0.01 g/cm³
Solids Content 22 ± 1.5 % by weight
Viscosity 185 ± 30 centipoise
VOC 694 grams/litre
Drying Time to Handle 10 minutes
Recommended Coating Thickness 25 – 75 microns
Recommended Curing Conditions 24 hrs @ RT or 30 min @ 76°C
Time to Reach Optimum Properties 7 days
Recommended Thinner HumiSeal® Thinner 535
Recommended Stripper HumiSeal® Stripper 1080, 1080EU
Shelf Life at Room Temperature 18 months
Thermal Shock -65°C to 125°C, 50 cycles per MIL-I-46058C
Coefficient of Thermal Expansion 55 ppm/°C
Glass Transition Temperature 14°C
Modulus 93.1 MPa @ -20°C, 73.5 MPa @ 0°C, 35.3 MPa @ 20°C
Moisture Vapour Transmission < 1 g/m²•day•mil
Dielectric Withstand Voltage >1500 volts
Dielectric Breakdown Voltage 4900 volts
Dielectric Constant 2.5
Dissipation Factor 0.07
Insulation Resistance 2.0 x 10¹⁴ ohms (200TΩ)
Moisture Insulation Resistance 1.0 x 10¹⁰ ohms (10GΩ)
Fungus Resistance Passes ASTM G21

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    HumiSeal® 1B51 Synthetic Rubber Conformal Coating

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      HumiSeal® 1B51 Synthetic Rubber Conformal Coating

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        HumiSeal® 1B51 Synthetic Rubber Conformal Coating

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          HumiSeal® 1B51 Synthetic Rubber Conformal Coating

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