Solvent Based Coatings

Humiseal 1A33 Polyurethane Coating

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. HumiSeal® 1A33 coating is MIL-I-46058C qualified, IPC-CC-830 and RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.


Humiseal 1A33 is a UL approved coating designed for hi-reliability applications requiring good MVP and chemical resistance. The product  is available in standard form or several process optimised derivatives depenind on application.

  • Aerosol Packaging
  • Gel Form
  • High Viscosity
  • Pre Mixed

The material can be hand applied, brushed, dispensed, sprayed as well as used in automated coating equipment. Please also see our complementry equipment and process control tools for optimising & enhancing  your conformal coating process.

Please contact us on on your application for advice on Humiseal 1A33 Range.

ONBoard Solutions offers SMT Production Solutions, Inline Printers, PCB printers, SMT assembly machines, Thermal Reflow Ovens, Wave Soldering, Conformal Coating, PCB Cleaning, Rework, Soldering, Desoldering and Rework Stations, Dispensing Units, Fume Extractor, Static Controls, DIE Bonders, Wire Bonders, Dicing Systems, Wafer Mounting System, Precision Cleaning, Lead free Solder Paste, Leaded Solder paste, Solder Wire, Flux, Epoxies, SMT Adhesives, UV Curable, Underfill, Precision Cleaners, Bonding Wire, Capilliary Tubes, Nozzles, Solder Tips, Air Showers, Pass Boxes, Transfer Hatches, Fan Filter Units, Laminar Flow Cabinets, Straddle Units, Modular Clean Rooms, disposable gloves, sterile gloves, ESD chairs, sticky mats, disposable garments, wipers, disinfectants.