Description
Weld-On® 55 is a clear, two-component polyurethane adhesive engineered for demanding sign and plastic fabrication applications. This VOC-free, slow-curing adhesive delivers durable, high-strength bonds with excellent UV stability and impact resistance. Its 5–6 minute working time and exceptional clarity make it ideal for bonding thermoplastics where aesthetics and performance are critical.
Trusted in Signage and Plastic Fabrication
Professionals in the sign industry rely on Weld-On 55 for channel letter assembly, especially when bonding butyrate trim caps to polycarbonate faces. Its clarity, extended working time, and clean finish make it equally valuable in plastic fabrication tasks like PETG-to-ABS assembly.
Key Features & Benefits
-
VOC-free, 100% reactive polyurethane formulation
-
Crystal-clear bond line for aesthetic applications
-
Long 5–6 minute working time allows for precise assembly
-
High lap shear and impact strength for durable joins
-
UV-resistant – maintains clarity in outdoor applications
-
Non-sag viscosity flows well between substrates
-
Fixture time: 1–2 hours; reaches 80% strength in 72 hours
-
Supplied in easy-to-use 50ml twin-syringe cartridges
-
Compatible with manual and pneumatic 1:1 applicator guns
-
Excellent substrate wetting and flow characteristics
Common Applications
-
Channel letter sign assembly (trim cap to polycarbonate)
-
Plastic fabrication and enclosure bonding
-
Bonding buffed acrylic, ABS, PVC, PETG, and polyurethane
-
Clear bonding applications requiring impact resistance
Technical Specifications
| Property | Value |
|---|---|
| Chemistry | Polyurethane (2-component, reactive) |
| Working Time | 5–6 minutes |
| Fixture Time | 1–2 hours |
| Time to 80% Strength | 72 hours |
| Gel Time (50g mass) | 10 minutes |
| Tack-Free Time | 1 hour (0.05” film) |
| Viscosity | 3,000 ± 1,000 cps |
| Tensile Strength (PC @ 72h) | 2,650 psi |
| Tensile Strength (ABS @ 72h) | 2,300 psi |
| Color | Clear / Milky Clear |
| VOC Content | 0 g/L |
| Specific Gravity (A/B) | 1.068 / 1.112 |
| Cartridge Size | 50ml |
Compliance & Certifications
-
VOC-free (0 g/L emissions)
-
Conforms to sign industry bonding standards
-
Manufactured under IPS quality assurance protocols
Compatible Substrates
-
Buffed acrylic
-
Cellulose acetate butyrate (trim cap)
-
Polycarbonate
-
PETG
-
ABS
-
PVC
-
Polyurethane
-
Foam board
Packaging & Ordering Info
-
Available in 50ml dual-cartridge format
-
12 cartridges per case (Approx. 3 lbs/case)
-
No minimum order quantity – purchase individually or by the case
-
Compatible with standard 1:1 mix ratio applicator guns and mixing tips
Need guidance selecting the right adhesive for your signage or plastic fabrication project? Contact our technical team for expert recommendations, samples, or volume pricing.
Phone: 800-220-1966 | Email: [email protected]
Reviews
There are no reviews yet.