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Synthetic Rubber
Model No: 1B58 LU
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HumiSeal® 1B58LU is an air drying, single component, synthetic rubber conformal coating. Because of its unique chemistry, HumiSeal® 1B58LU has extremely low moisture vapor permeability and improved thermal stability. The coating demonstrates excellent flexibility, low stress on components, fluoresces under UV for ease of inspection and is easily repaired. HumiSeal® 1B58LU contains methylcyclohexane which is more environmentally friendly than traditional solvents.

 Product Enquiry

HumiSeal® 1B58LU conformal coating is:

  • fast drying
  • single component
  • synthetic rubber based
  • used with Thinner 903 or 905

 

HumiSeal® 1B58 conformal coating has:

  • extremely low moisture vapor permeability
  • improved thermal stability
  • excellent flexibility, low stress on components
  • fluoresces under UV light for ease of inspection and is easily repaired
  • methylcyclohexane which is more environmentally friendly than traditional solvents
  • full compliance with the RoHS Directive 2015/863/EC
  • IPC-CC-830 compliant

 

Application of HumiSeal® 1B58LU

Conformal coatings can be successfully applied to substrates that have been cleaned prior to coating and also to substrates assembled with low residue “no clean” materials.  Users should perform adequate testing to confirm compatibility between the conformal coating and their particular assembly materials, process conditions and cleanliness level.  

The application of conformal coatings over no clean flux is a common practice. The user should perform adequate testing to confirm compatibility between the conformal coating and their particular assembly materials and process conditions.

Specification:

Product Specification

Density, per ASTM D1475

0.77 ± 0.02 g/cm3

Solids Content, % by weight per Fed-Std-141, Meth. 4044

20 ± 1.5 %

Viscosity, per Fed-Std-141, Meth. 4287

240 ± 130 centipoise

VOC

628 grams/liter

Drying Time to Handle per Fed-Std-141, Meth. 4061

10 minutes

Recommended Coating Thickness

25 – 75 microns

Recommended Curing Conditions

24 hrs @ RT or 30 min @ 76°C

Time Required to Reach Optimum Properties

7 days

Recommended Thinner

HumiSeal Thinner 903, 905

Recommended Stripper

Stripper 1080

Shelf Life at Room Temperature, DOM

18 months

Thermal Shock, 50 cycles per MIL-I-46058C

-65°C to 125°C

Glass Transition Temperature – DSC

-49.6°C

Tensile Strength, treated at 140°C

33.6 MPa, 27.0 MPa (after 1,000 hours),
18.6 MPa (after 2,000 hours), 11.6 MPa (after 3,000 hours)

Extension, treated at 140°C

503 %, 484 % (after 1,000 hours),
443 % (after 2,000 hours), 96 % (after 3,000 hours)

Moisture Vapor Transmission, per ASTM E398-03

5.2 g/m2 • day • mil

Dielectric Withstand Voltage, per MIL-I-46058C

>1500 volts

Insulation Resistance, per MIL-I-46058C

5.0 x 1014 ohms (500TΩ)

Moisture Insulation Resistance, per MIL-I-46058C

7.5 x 1013 ohms (75GΩ)