Product
SCIGRIP Weld-On 55
Clear two-component reactive polyurethane documented for listed thermoplastics, including ABS and polycarbonate, to one another.
This is polyurethane adhesive, so everything true of that chemistry applies here too.
Specification
- Form
- Liquid
- Mix ratio
- 1:1 by volume
- Working time
- 6 minutes
- Handling time
- 120 minutes
- Full cure
- 72 hours
- Full cure time
- 72.0000 hours (SCIGRIP state this as time to reach 80% of ultimate bond strength, not full cure) Manufacturer verified
- Handling time
- 120.0000 minutes (Upper end of stated 1-2 hour fixture-time range) Manufacturer verified
- Hazard statement
- WARNING! FLAMMABLE. VAPOR HARMFUL. MAY BE HARMFUL IF SWALLOWED. MAY IRRITATE SKIN OR EYES. SCIGRIP classify the product as a hazardous material, though it emits no VOC. Manufacturer verified
- Lap shear strength
- 20.0000 MPa (Measured on polycarbonate, 1 week cure, 0.25 inch substrate thickness, 1.0 in² bond area. ABS reaches 2500 lbs/in² (17.2 MPa) and PETG 2400 lbs/in² (16.5 MPa) over the same period) Manufacturer verified
- Mix ratio
- 1:1 by volume, dispensed from a twin-syringe cartridge through a static mixing tip Manufacturer verified
- Shelf life
- 12.0000 months (Unopened cartridge. Reduced at higher temperatures; SCIGRIP recommend refrigerated or cool dark storage between 10 °C and 27 °C) Manufacturer verified
- Manufacturer substrate wording
- SCIGRIP® 55 is formulated for bonding a wide variety of thermoplastics, including polycarbonate, cellulose acetate butyrate, PETG, buffed acrylic, ABS, PVC, polyurethane and foam board to themselves and one another (Note 'buffed acrylic'. SCIGRIP specify an abraded acrylic face, not acrylic as supplied) Manufacturer verified
- UV resistance wording
- The adhesive has excellent resistance to discoloration by UV light. (A colour-stability claim about the adhesive itself. Not a weathering, exterior-durability or strength-retention claim) Manufacturer verified
- Working time
- 6.0000 minutes (Upper end of stated 5-6 minute working-time range at 23 C) Manufacturer verified
What it bonds
Where the manufacturer names a material, we quote them. Where we have assessed it ourselves, we say so and grade it lower. The two are never merged.
| Material | Basis | Manufacturer wording |
|---|---|---|
| ABS | Listed by the manufacturer A | “including polycarbonate ... ABS ... to themselves and one another” |
| Acrylic | Listed by the manufacturer A | “buffed acrylic” Abrade first |
| PETG | Listed by the manufacturer A | “SCIGRIP® 55 is formulated for bonding a wide variety of thermoplastics, including polycarbonate, cellulose acetate butyrate, PETG, buffed acrylic, ABS, PVC, polyurethane and foam board to themselves and one another” |
| Polycarbonate | Listed by the manufacturer A | “including polycarbonate ... ABS ... to themselves and one another” |
| PVC | Listed by the manufacturer A | “SCIGRIP® 55 is formulated for bonding a wide variety of thermoplastics, including polycarbonate, cellulose acetate butyrate, PETG, buffed acrylic, ABS, PVC, polyurethane and foam board to themselves and one another” |
| uPVC | Implied by the manufacturer B | “SCIGRIP® 55 is formulated for bonding a wide variety of thermoplastics, including polycarbonate, cellulose acetate butyrate, PETG, buffed acrylic, ABS, PVC, polyurethane and foam board to themselves and one another” |
Preparation
SCIGRIP specify buffed acrylic rather than acrylic as supplied, so acrylic faces should be abraded before bonding.
Limitations
The TDS gives no service temperature and no water, moisture or immersion statement; neither should be assumed. The 10 C to 27 C range on the datasheet is storage, not service. Classified as a hazardous material: flammable, vapour harmful, may irritate skin or eyes.
Sources
- SCIGRIP 55 VOC-Free Polyurethane Adhesive Technical Data Sheet (TDS v55 TDS 08/14)
- Weld-On 55 VOC-Free Polyurethane Adhesive Technical Data Sheet (TDS vTDS 01/20)
Last reviewed 8 October 2026.