Humiseal UV92 | Urethane acrylate UV masking material
Harmonization Code : |
Main features
- Easily Applied by syringes, dispensing machines
- Keeps contact points and connections free of coating
- Easily removed by peeling - leaves no residue to interfere with subsequent operations
Product Description
HumiSeal® UV92 is a soft, one part, UV curable masking material. HumiSeal® UV92 applies easily because of its shearing thinning viscosity profile and is 100% cured by exposure to UV to provide a temporary barrier to prevent ingress of coatings into keep out areas.
HumiSeal® UV92 has excellent solvent resistance that provides selective release from conformal coating. HumiSeal® UV92 will survive intermittent exposure to temperatures up to 150°C. HumiSeal® UV92 is REACH and RoHS compliant and available in bulk and syringes.
HS-UV92
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TDS, SDS & Technical Documents
- UV92_HumiSeal_Technical_Data_Sheet
- UV92 SDS
Technical Specifications
General Properties
Thermal Properties
Mechanical Properties
Additional Information
Frequently Asked Questions About HumiSeal® UV92
What are typical applications for HumiSeal® UV92?
HumiSeal® UV92 is a soft, peelable, UV-curable masking material used to protect keep-out zones during conformal coating, wave/selective soldering, and rework. Apply it where coating is not desired—e.g., on connectors, test pads, edge fingers, and switch bodies—then cure and peel away cleanly after processing.
- Electronics manufacturing (PCB assembly lines)
- Automotive & industrial control modules
- Aerospace/defense electronics needing clean contact points
Why choose HumiSeal® UV92 over tapes or latex masks?
It dispenses easily thanks to a shear-thinning, thixotropic paste rheology; cures 100% under UV (LED 365/405 nm or “H” type microwave/arc lamps ≥200 mW/cm²); resists solvents for selective release from conformal coatings; peels cleanly with no residue; and won’t tarnish gold, tin, copper, phosphor-bronze, or Sn/Pb solder.
Learn More About HumiSeal® UV92
HumiSeal® UV92 is a purpose-built, peelable mask for PCB manufacturing. Its thixotropic profile allows precise bead/dam formation by syringe or automated dispensing, then a fast UV cure locks it in place to keep contacts and connectors free of conformal coating. After processing, it peels away cleanly without residue—ideal for high-reliability assemblies that must remain testable and serviceable.
Key Features at a Glance
- ✔ Thixotropic, shear-thinning paste for precise dispensing
- ✔ UV cure (LED 365/405 nm or “H” lamps ≥200 mW/cm²)
- ✔ Excellent solvent resistance for selective release from coatings
- ✔ Peels cleanly; won’t tarnish common PCB metals
- ✔ Operating range −50 °C to +150 °C; intermittent 150 °C exposure
- ✔ REACH & RoHS compliant
Versatile Application Methods 🧰
HumiSeal® UV92 can be applied as a soft, peelable mask using syringes or automated dispensing equipment. Its thixotropic viscosity allows bead or dam formation, making it easy to control placement around connectors, test pads, and other keep-out zones.
Application Methods
- Syringe Dispensing: Ideal for localized application on connectors, pads, and edge fingers
- Automated Dispensing: For precise and repeatable coverage in production lines
- Bead/Dam Formation: Maintains shape during processing, even in thick applications (up to 5 mm)
Curing Options: 100% cured with UV exposure — UV-LED at 365 nm or 405 nm, or microwave/arc lamp systems (minimum 200 mW/cm²). Once cured, UV92 acts as a barrier to prevent conformal coating from entering protected areas. Removal is simple: peel away cleanly without residue.
Application Compatibility
HumiSeal® UV92 is compatible with a wide range of PCB materials and finishes, ensuring it can be safely used across diverse electronic assemblies:
- ✔ PCB assemblies and modules with conformal coatings
- ✔ Contact areas, connectors, and test points requiring protection
- ✔ Sensitive metals such as gold, tin, copper, phosphor bronze, and Sn/Pb solder (no tarnishing)
Its built-in UV tracer allows quick, accurate inspection under UV light to confirm full coverage before coating.
Repairable and Reworkable 🔁
After processing, HumiSeal® UV92 can be peeled off cleanly without residue, allowing re-masking or rework as needed.
Reliable Across Environments 🌍
Withstands temperatures from −50 °C to +150 °C and maintains performance during intermittent high-temperature exposure. Its solvent resistance ensures clean removal after exposure to harsh processes.
Compliance You Can Trust ✅
HumiSeal® UV92 meets stringent industry standards, ensuring reliability and regulatory adherence for OEMs and contract manufacturers:
- MIL-I-46058C Qualified
- IPC-CC-830B Compliant
- IEC60664-3 Compliant
- RoHS 2015/863/EU Compliant
- UL Recognized Component (E105698)
- IEC61086 / IEC60068-2-11 Compliant
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