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PERMABOND UV675
Permabond UV675 — UV/light-activated adhesive, Shore D 60-70.
Crystal-Clear UV adhesive — daylight stable, ideal for glass cutting and crystal work.
Documents
Internal reference:
49-675.FL
HS code:
3506.9190000
Permabond UV675 is a crystal-clear, UV-curing adhesive with daylight stability — designed for glass bonding applications that require further processing under ambient light after application, e.g., glass grinding or polishing.
UV675 is stable under ambient light (fluorescent lamps, daylight through windows) — it only cures under strong UV light (4 mW/cm² or higher). This property makes UV675 ideal for applications where the adhesive needs to be cleaned, sanded, or positioned after application.
The crystal-clear optics and resistance to yellowing qualify UV675 for high-quality glass art and crystal bonding — such as cut glass bevels, where polishing takes place after bonding.
Crystal-Clear UV adhesive with daylight stability — remains liquid under ambient light (fluorescent lamps, sunlight through windows), only curing under UV light. Ideal for glass components that will be cleaned or processed after bonding.
What distinguishes Permabond UV675
What is Permabond UV675 used for?
processing
Recommended accessories
Important instructions
Which Permabond UV adhesive is suitable for which application?
Permabond UV675 in direct comparison with related products of the UV series.
Permabond UV675 Current product | Permabond UV620 → | Permabond UV612 → | Permabond UV605 → | |
|---|---|---|---|---|
| Application | Crystal-Clear UV adhesive for glass, light-stable | Medium viscosity clear | Lower specific density | Low viscosity Wicking |
| viscosity | 500–800 mPa·s @ 20 rpm | 2,200–2,900 mPa·s | 450–650 mPa·s | 50–100 mPa·s |
| Substrate strength | 8–12 N/mm² | 9–10 N/mm² | 8–12 N/mm² | 10–14 N/mm² |
| Elongation at break | >50 % | >80 % | >50 % | 90 % |
Technical data for PERMABOND UV675
| Product information | |
|---|---|
| Manufacturer | Permabond Engineering Adhesives Ltd |
| brand | Permabond |
| Container | 50 ml, 250 ml |
| Country of origin | Italy |
| Performance at final strength | |
|---|---|
| Tensile strength (ISO37) | 16 N/mm² |
| Refractive index | >1,490 |
| Elongation at break (elasticity) (ISO37) | >50% |
| Dielectric strength | 12 kV/mm |
| Dielectric constant 1MHz at 25°C | 4 |
| Water absorption (ISO62) 2 hours in boiling water | <3% |
| Tensile strength (ASTM D-2095-69) glass/steel | 8-12 N/mm² |
| Physical properties | |
|---|---|
| Color | colorless |
| Chemical group | Methacrylic acid esters |
| Viscosity (adhesives) | Medium viscosity 500 - 5000 mPas |
| Viscosity 20rpm | 500-800 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Curing wavelength | 365-400 nm |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 60-70 |
| 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 UV675
Practical application and design questions — answered by SILITECH.
Permabond UV675 is a methacrylic acid ester (UV-curing) adhesive with a viscosity of 500–800 mPa·s @ 20 rpm. This crystal-clear UV adhesive for glass is stable under daylight and fluorescent lamps. The adhesive cures upon irradiation with UV light in the spectral range of 365–400 nm—curing in seconds "on demand".
Permabond UV675 cures in the spectral range of 365–400 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.
Permabond UV675 typically cures in: 7 s with a 4 mW/cm² low-power lamp; 2 s with a 100 mW/cm² LED lamp; 1 s with a 30 W/cm² UV light guide system. The exact curing time depends on the layer thickness and the light transmittance of the components.
Permabond UV675 bonds reliably to glass/steel: 8–12 N/mm². For thermoplastic substrates, we recommend testing compatibility before series production — release agents on injection-molded parts can impair adhesion.
Permabond UV675 is a crystal-clear UV adhesive for glass, resistant to light exposure (500–800 mPa·s @ 20 rpm viscosity, >50% elongation at break). Permabond UV620 is optically clear (2,200–2,900 mPa·s, >80% elongation at break) — medium viscosity clear.
When stored at 5 to 25 °C and protected from light, Permabond UV675 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 UV675 (Crystal-Clear UV adhesive for glass, light-stable); Permabond UV620 (Optically clear); Permabond UV612 (Crystal clear visible); Permabond UV605 (Wicking). 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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Product specifications
| Product information | |
|---|---|
| Container | 50 ml or 250 ml |
| Manufacturer | Permabond Engineering Adhesives Ltd |
| brand | Permabond |
| Country of origin | Italy |
| Performance at final strength | |
|---|---|
| Tensile strength (ISO37) | 16 N/mm² |
| Refractive index | >1,490 |
| Elongation at break (elasticity) (ISO37) | >50% |
| Dielectric strength | 12 kV/mm |
| Dielectric constant 1MHz at 25°C | 4 |
| Water absorption (ISO62) 2 hours in boiling water | <3% |
| Tensile strength (ASTM D-2095-69) glass/steel | 8-12 N/mm² |
| Physical properties | |
|---|---|
| Color | colorless |
| Chemical group | Methacrylic acid esters |
| Viscosity (adhesives) | Medium viscosity 500 - 5000 mPas |
| Viscosity 20rpm | 500-800 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Curing wavelength | 365-400 nm |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 60-70 |
| 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 UV675 - Technical Data Sheet FR.pdf (282 KB)
- Permabond UV675 - Fiche de Sécurité FR.pdf (501 KB)
- Permabond UV675 - Safety Data Sheet EN.pdf (499 KB)
- Permabond UV675 - Safety Data Sheet DE.pdf (503 KB)
- Permabond UV675 - Technical Data Sheet EN.pdf (321 KB)
- Permabond UV675 - Technical Data Sheet DE.pdf (325 KB)