M8350 UV-curable blue protective gel dispensing tube
UV-Curable Peelable Blue Coatings
UV Peelable Blue Gel for Display Protection
M8350 is a single-component, high-viscosity UV-curable gel for removable protection and formed-in-place masking around displays and precision components. The resilient cured material combines high elongation with low adhesion for peeling and rework.
- Model
- M8350
- Pack size
- 50 ml dispensing tube
- Base chemistry
- Urethane acrylate
Surfaces & applications
Display-edge protection; electronics assembly; formed-in-place removable gaskets; precision components and rework
Dispensed protection around displays
The high-viscosity paste can be dispensed as a controlled bead around a display perimeter or localized protected area. It is suitable for automated dispensing and spray-dispensing processes that can handle this viscosity. Keep sensitive openings and electrical contacts clear unless the process specifically calls for masking them.
Resilient material for removal and rework
The cured gel has a reference Shore A hardness of 48 and 400% elongation at break. This combination supports flexibility during deformation and removal. The material is designed for low adhesion to many substrates after curing, allowing the temporary layer or formed gasket to be removed for rework.
Match curing depth to exposure
The technical table lists 0.5, 0.8 and 1.5 mm curing depths at 3, 6 and 9 seconds respectively under the stated UV conditions. Lamp spectrum, distance, intensity, exposure time and substrate light transmission affect the result. These entries are reference process measurements, not interchangeable settings for every lamp.
Electrical and moisture properties
Reference electrical properties include a dielectric constant of 3.5 at 1 MHz and dielectric strength of 17 kV/mm. The listed water absorption is 2.5% after 24 hours at 25°C. Select a process using the complete operating environment; these values alone do not establish an enclosure waterproof rating or device certification.
Clean handling and storage
Protect the uncured gel from sunlight and strong UV light. Clean oil, moisture and dust from the substrate before dispensing. Use UV shielding and appropriate eye protection at the curing station. Keep the dispenser capped when not in use and avoid returning dispensed material to the original container.
Technical reference
Product specifications
Use these details alongside your substrate, application method and service conditions.
Discuss your requirements| Property | Detail |
|---|---|
| Model | M8350 |
| Pack size | 50 ml dispensing tube |
| Base chemistry | Urethane acrylate |
| Appearance | Transparent to pale-blue paste |
| Viscosity at 25°C | 65,000 mPa·s; GB/T 2794-2013 |
| Reference UV conditions | 150 mW/cm², 200–400 nm, SL4000 tunnel oven |
| Reference exposure / depth | 3 s / 0.5 mm; 6 s / 0.8 mm; 9 s / 1.5 mm |
| Reference accumulated energy | 500, 900 and 1,500 mJ/cm² respectively |
| Cured hardness | Shore A 48; GB/T 2411-2008 |
| Elongation at break | 400%; GB/T 1040-2006 |
| Water absorption | 2.5% at 25°C for 24 h; GB/T 1034-2008 |
| Dielectric constant | 3.5 at 1 MHz |
| Dielectric strength | 17 kV/mm |
| Surface resistivity | 4.3 × 10¹³ Ω |
| Volume resistivity | 1.1 × 10¹³ Ω·cm |
| Listed temperature range | −40 to 180°C; validate under the intended service conditions |
Application process
Protection through the complete cycle
- 01
Prepare and clean
Clean and dry the bonding or masking surface without leaving cleaner residues.
- 02
Dispense the bead
Apply an even bead or layer using the 50 ml dispenser or a compatible dispensing system. Control thickness to suit the intended cure depth.
- 03
Expose to UV
Cure with equipment matched to the reference spectrum and energy. Check the complete film, particularly shadowed edges.
- 04
Inspect and rework
Confirm tack-free curing and the required protection. When rework is needed, peel the cured material and inspect the exposed surface.
A closer look
Product & application gallery
Product formats, surface details and application examples.
From evaluation to supply
Start with a sample.
Free samples are available; the customer pays freight. Order quantities depend on the product and pack format, with flexible starting quantities discussed with sales. Typical lead time is 10–20 days after order details are confirmed. OEM and private-label requirements can be discussed with the product specification.
Frequently asked questions
How is this different from bulk UV blue coating?
M8350 is a high-viscosity gel supplied in a 50 ml dispensing tube, suited to controlled beads and display-edge work. The bulk coating is presented for broader selective masking.
Does it need a hardener?
It is a single-component UV-curable material; curing is triggered by suitable light exposure.
Can a thicker bead use the shortest cure cycle?
Not automatically. The reference table links depth to exposure, and actual curing must be verified with the selected lamp and part geometry.
Discuss this product
Tell us your application, required format and quantity. We can help select a suitable sample and supply option.
- sales@leadercoat.com
- Phone & WhatsApp
- +86 151 7525 6533
- Sample support
- Free samples. Customer-paid freight.