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PERMABOND UV648
Permabond UV648 — UV/light-activated adhesive, Shore D 50-65.
Toughened UV adhesive for plastics — urethane methacrylate chemistry, impact and peel resistant.
Documents
Internal reference:
49-6488.FL
HS code:
3506.9190000
Permabond UV648 is a toughened, UV-curing adhesive based on urethane methacrylate — developed for bonding plastics with high impact, shock and peel strength requirements.
Unlike conventional methacrylic acid ester UV adhesives, UV648 utilizes a urethane methacrylate chemistry — the urethane modification provides higher elongation at break and improved impact resistance. Ideal for plastics subjected to dynamic stress during operation.
With a viscosity of 20,000–40,000 mPa·s, UV648 is highly viscous—remaining stable in vertical bonding applications and filling large tolerances. Bonding polycarbonate, acrylic, and PET leads to substrate failure.
Toughened UV-cured adhesive based on urethane methacrylate — the urethane modification gives the bond higher impact and peel strength than pure methacrylate adhesives. Ideal for plastics subjected to dynamic loads.
What distinguishes Permabond UV648
What is Permabond UV648 used for?
processing
Recommended accessories
Important instructions
Which Permabond UV adhesive is suitable for which application?
Permabond UV648 in direct comparison with related products of the UV series.
Permabond UV648 Current product | Permabond UV645 → | Permabond UV649 → | Permabond UV632 → | |
|---|---|---|---|---|
| Application | UV adhesive for plastics — toughened urethane methacrylate | Methacrylate instead of urethane | Methacrylate thixotropic | Low-viscosity urethane variant |
| viscosity | 20,000-40,000 mPa s @ 20 rpm / 120,000-180,000 mPa s @ 2.5 rpm | 8,000–10,000 mPa·s | 20,000–30,000 mPa·s | 200–400 mPa·s |
| Substrate strength | >7 N/mm² (substrate failure) | Polycarbonat | PC/ABS | Polycarbonat |
| Elongation at break | >70 % | >70 % | >70 % | >70 % |
Technical data for PERMABOND UV648
| Product information | |
|---|---|
| Manufacturer | Permabond Engineering Adhesives Ltd |
| brand | Permabond |
| Container | 50 ml, 300 ml, 1 l |
| Country of origin | Italy |
| UFI (Unique Formula Identifier) | 3F10-J06N-X00T-WS31 |
| Performance at final strength | |
|---|---|
| Tensile strength (ISO37) | 11 N/mm² |
| Refractive index | 1490 |
| Elongation at break (elasticity) (ISO37) | >70% |
| Dielectric strength | 25-30 KV/mm |
| Dielectric constant 1MHz at 25°C | 4 |
| Water absorption (ISO62) 2 hours in boiling water | <3,5% |
| Shear strength polycarbonate | >7 N/mm² |
| Physical properties | |
|---|---|
| Color | colorless |
| Chemical group | Urethane methacrylate |
| Viscosity (adhesives) | High viscosity >5000 mPas |
| Viscosity 20rpm | 20000-40000 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Curing wavelength | 365 - 420 nm |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 50-65 |
| Shear strength ISO 4587 in N/mm² | |
|---|---|
| Acrylic | >1.5 N/mm² |
| PET | >4 N/mm² |
| Thermal properties | |
|---|---|
| Storage temperature (°C) | 5-25 |
For binding values, please refer to the technical data sheet (TDS) in the "Documents" tab.
Documents and datasheets
Click on a document for a preview or the download icon for a direct download.
Technical Data Sheets (TDS) 3
Frequently asked questions about Permabond UV648
Practical application and design questions — answered by SILITECH.
Permabond UV648 is a urethane methacrylate (UV-curing, long-wave) adhesive with a viscosity of 20,000–40,000 mPa·s @ 20 rpm / 120,000–180,000 mPa·s @ 2.5 rpm. This toughened UV adhesive for plastics features a urethane methacrylate chemistry for increased impact strength. The adhesive cures upon irradiation with UV light in the spectral range of 365–420 nm—curing in seconds, "on demand.".
Permabond UV648 cures in the spectral range of 365–420 nm. Standard mercury vapor UV lamps, LED UV lamps with a suitable wavelength, or UV light guide systems are all suitable. For LED lamps, the maximum wavelength of the LED must be matched to the curing spectrum of the adhesive—we are happy to advise you on selecting the right lamp.
The UV curing of Permabond UV648 depends on the lamp power, wavelength, and light transmittance of the components. Typical curing times range from seconds to a few minutes.
Permabond UV648 reliably bonds: Polycarbonate: >7 N/mm² (substrate failure); Acrylic: >4 N/mm²; PET: >4 N/mm² (substrate failure). For thermoplastic substrates, we recommend testing compatibility before series production — release agents on injection-molded parts can impair adhesion.
Permabond UV648 is a UV adhesive for plastics — urethane methacrylate, toughened (20,000–40,000 mPa·s @ 20 rpm / 120,000–180,000 mPa·s @ 2.5 rpm viscosity, >70% elongation at break). Permabond UV645 is a standard high-viscosity adhesive (8,000–10,000 mPa·s, >70% elongation at break) — methacrylate instead of urethane.
When stored at 5 to 25 °C and protected from light, Permabond UV648 is stable until the printed expiration date. IMPORTANT: UV adhesives cure upon contact with light — always store the bottle in the dark and only open it briefly under UV-blocked light. Daylight-stable variants (e.g., UV675) can be used briefly under ambient light.
From the Permabond UV range, select according to substrate, viscosity, and special properties: Permabond UV648 (UV adhesive for plastics — toughened urethane methacrylate); Permabond UV645 (standard high viscosity); Permabond UV649 (plastic gel thixotropic); Permabond UV632 (urethane low viscosity). For shadowed areas (where UV light does not fully reach the adhesive gap), a dual-cure variant such as Permabond UV7141 (UV + anaerobic) should be used.
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Our technical team will advise you personally on material selection, processing questions, and individual requirements. Quickly and competently.
Product specifications
| Product information | |
|---|---|
| Container | 50 ml or 300 ml or 1 l |
| Manufacturer | Permabond Engineering Adhesives Ltd |
| brand | Permabond |
| Country of origin | Italy |
| UFI (Unique Formula Identifier) | 3F10-J06N-X00T-WS31 |
| Performance at final strength | |
|---|---|
| Tensile strength (ISO37) | 11 N/mm² |
| Refractive index | 1490 |
| Elongation at break (elasticity) (ISO37) | >70% |
| Dielectric strength | 25-30 KV/mm |
| Dielectric constant 1MHz at 25°C | 4 |
| Water absorption (ISO62) 2 hours in boiling water | <3,5% |
| Shear strength polycarbonate | >7 N/mm² |
| Physical properties | |
|---|---|
| Color | colorless |
| Chemical group | Urethane methacrylate |
| Viscosity (adhesives) | High viscosity >5000 mPas |
| Viscosity 20rpm | 20000-40000 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Curing wavelength | 365 - 420 nm |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 50-65 |
| Shear strength ISO 4587 in N/mm² | |
|---|---|
| Acrylic | >1.5 N/mm² |
| PET | >4 N/mm² |
| Thermal properties | |
|---|---|
| Storage temperature (°C) | 5-25 |
| Keywords | |
|---|---|
| Keywords | |
Documents and datasheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download:
- Permabond UV648 - Technical Data Sheet FR.pdf (285 KB)
- Permabond UV648 - Fiche de Sécurité FR.pdf (479 KB)
- Permabond UV648 - Safety Data Sheet EN.pdf (475 KB)
- Permabond UV648 - Safety Data Sheet DE.pdf (480 KB)
- Permabond UV648 - Technical Data Sheet EN.pdf (318 KB)
- Permabond UV648 - Technical Data Sheet DE.pdf (308 KB)