- Client Duong Do dinh - (0986490xxx) bought 3 month ago (25/11/2025)
HumiSeal 1C51
4 5 (1 evaluate)Category: Silicones
Manufacturer: Humiseal
Packaging: 5L, 20L
Origin: UK or USA
Product Specification
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Density, per ASTM D1475 |
0.99 ± 0.01 g/cm³ |
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Min. Solids Content, % by weight per Fed-Std-141, Meth. 4044 |
98 % |
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Viscosity, per Fed-Std-141, Meth. 4287 |
630 ± 150 centipoise |
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VOC |
0 grams/litre |
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Recommended Coating Thickness |
50 – 200 microns |
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Recommended Curing Conditions |
10 – 15 min @ 105 – 130ºC |
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Time Required to Reach Optimum Properties |
15 min |
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Recommended Stripper |
HumiSeal Stripper 1091 |
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Shelf Life at Recommended Conditions, DOM |
12 months |
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Thermal Shock, 50 cycles per MIL-I-46058C |
-65°C to 200°C |
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Glass Transition Temperature – DSC |
< -65ºC |
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Coefficient of Thermal Expansion – TMA |
296 ppm/°C |
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Modulus – DMA |
46 MPa @ -40ºC |
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Flammability, per UL 94 |
V-0 |
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Dielectric Withstand Voltage, per MIL-I-46058C |
>1500 volts |
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Dielectric Breakdown Voltage, per ASTM D 149 |
7000 volts |
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Dielectric Constant, at 1MHz and 25°C per ASTM D150-98 |
2.4 |
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Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 |
0.01 |
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Insulation Resistance, per MIL-I-46058C |
5.0 x 1014 ohms (500TΩ) |
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Moisture Insulation Resistance, per MIL-I-46058C |
1.0 x 1010 ohms (10GΩ) |
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Fungus Resistance, per ASTM G21 |
Passes |
HumiSeal 1C51 offers the following features:
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silicone based
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fluoresces under UV light
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thermal cure
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single component
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high solids
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No VOCs or solvent
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low toxicity
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excellent environmental resistance and moisture resistance
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RoHS directive 2015/863/EU
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Mil-I-46058C qualified
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IPC-CC-830 qualified
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recognized under UL file number E105698
Application of HumiSeal 1C51
HumiSeal® 1C51 is designed for use on substrates that have been cleaned before coating or assembled with low-residue "no clean" materials. It is essential to perform proper testing to ensure compatibility between the coating and the specific materials, process conditions, and cleanliness levels used. For further assistance, please contact a HumiSeal representative.
1C51 is formulated for application without the need for additional thinning. Solvents or other thinners should not be mixed with 1C51. This coating can be applied via spray, brushing, flow coating, or dipping methods. The time needed to achieve a tack-free state depends on ambient conditions such as temperature and relative humidity, with the guidelines provided based on 50% relative humidity.
Dipping
A controlled rate of immersion and withdrawal (5-15 cm/min) ensures even deposition of the coating and uniform film formation. Blanketing dip tanks with an inert gas like nitrogen can help extend pot life.
Spraying
HumiSeal® 1C51 may be applied using conventional spraying equipment. It is recommended to perform spraying in an adequately ventilated environment to ensure the vapor and mist are effectively carried away from the operator. The use of thinner is not necessary or recommended for HumiSeal® 1C51.
Brushing
Uniformity of the film depends on component density and the technique of the operator.
Curing
HumiSeal® 1C51 is thermally cured. The curing temperature varies based on factors such as the heat sink properties of the parts being coated, the oven used, and the loading parameters. The curing process can be hindered by certain materials like amines, acrylates, and latex rubber components. Compatibility between process materials should be evaluated before incorporating HumiSeal® 1C51 into production. It is recommended that operators wear cotton gloves when handling assemblies before coating with HumiSeal® 1C51.
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