Skip to main content

HumiSeal 1A33 Urethane Conformal Coating

Silmid P/N: VAR0000770
From £41.92 (excl VAT) £50.30 (Inc VAT)

HumiSeal 1A33 is a single component, polyurethane conformal coating, suitable for general printed circuit board applications. HumiSeal 1A33 contains no free isocyanates and fluoresces under UV light for Inspection purposes.

Product Properties


Product Information

Cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures.


  • ASTM D150-98
  • ASTM D149
  • MIL-I-46058C

Shipping information

Orders over £100 placed online will now qualify for FREE UK Mainland delivery*

Orders under £100 placed online for UK Mainland delivery is £12.00*

**Orders requiring Pre 10.00am Next Day delivery has also been lowered from £35.00 to £30.00, orders placed through the office will incur additional charges.** 

International delivery (door to door delivery) is available for selected countries worldwide. Shipping will be automatically calculated based on the weight, location and hazardous nature of the goods. Customers can also choose ex works to arrange their own collection.

Please refer to our delivery page for more information.