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• 1B58 is the latest high performing
conformal coating which HumiSeal
brings to the industry
• 1B58 builds upon HumiSeal 1B51
synthetic rubber-based product family
• Formulated to give increased
temperature stability
• Operating temperature to 140C
1B58
Synthetic Rubber

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• One-Part system
• Can be used at temperatures up to
140C.
• Uses non-HAPs carrier solvent (MCH)
• Can be applied by multiple methods.
Compatible with most dispensing
systems
• Fluoresces under UV light
• Ease of rework / removal
1B58
Features & Benefits

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• Ease of Use
• Higher service temperatures. Compatible
with modern electronic componentry.
• Increased worker safety.
• Ease of Implementation
• Allow for rapid processing and automation
• Ease of Optical Inspection
• Suitable for devices with long service life
1B58
Features & Benefits

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1B58
Liquid Properties • Density 0.78 g/cm3
• Solids Content 21 %
• Viscosity 215-245 cps
• Recommended Coating Thickness 25 -75 microns
• Shelf Life (@ RT) 12 months (DOM)
• Curing Conditions 30 min @170F
24 h @ RT

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1B58
Cured Properties Thermal Shock, 50 cycles per MIL-I-46058C -65 C to 125 C
Glass Transition Temperature – DSC 25ºC
Dielectric Withstand Voltage, per MIL-I-46058C >1500 volts
Insulation Resistance, per MIL-I-46058C 5.0 x 1014 ohms
Moisture Insulation Resistance, per MIL-I-46058C 8.1 x 1010 ohms
Fungus Resistance, per ASTM G21 Pass
Flexibility per MIL-I-46058C Pass
Adhesion per ASTM D3359 Pass (“5”)

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1B58
Thermal Stability
Insert curve of TGA trace for 1B58
versus Acrylic and silicone

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1B58
Thermal Stability
Comparison

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1B58
Thermal Stability • MIR vs. Temperature
• (Regraph this data on log10 scale)