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PERMABOND UV6231
Permabond UV6231 — UV/light-activated adhesive, Shore D 45-50.
Weather and moisture resistant UV adhesive — bathroom applications, outdoor use, highly flexible.
Documents
Internal reference:
49-6231.FL
HS code:
3506.9190000
Permabond UV6231 is an optically clear, weather and moisture resistant UV-curing adhesive — specifically for applications in damp environments such as bathrooms (bathroom scales, shower doors), or outdoor bonding exposed to the elements.
With an elongation at break of >120% and a Shore D hardness of 45–50, UV6231 is significantly more flexible than standard UV adhesives. This flexibility buffers thermal expansion and contraction and dynamic loads—important for outdoor applications with day-night cycles.
After 500 hours at 70 °C / 90% relative humidity, UV6231 still maintains a glass-to-steel strength of 6–7 N/mm² — values that standard UV adhesives cannot achieve. Its main application areas are the bathroom and outdoor industries.
Weather and moisture resistant — suitable for bathroom and outdoor applications. Retains 6–7 N/mm² tensile strength after 500 hours at 70 °C / 90% relative humidity. Highly flexible with >120% elongation at break.
What distinguishes Permabond UV6231
What is Permabond UV6231 used for?
processing
Recommended accessories
Important instructions
Which Permabond UV adhesive is suitable for which application?
Permabond UV6231 in direct comparison with related products of the UV series.
Permabond UV6231 Current product | Permabond UV6160 → | Permabond UV675 → | Permabond UV630 → | |
|---|---|---|---|---|
| Application | Weather and moisture resistant UV adhesive (bathroom/outdoor) | Clear in thick layers | Low viscosity clear | plastic-specific |
| viscosity | 5,000–8,000 mPa·s @ 20 rpm | 1,000–2,000 mPa·s | 500–800 mPa·s | 250 mPa·s |
| Substrate strength | 10 N/mm² | 11–18 N/mm² | 8–12 N/mm² | plastic |
| Elongation at break | >120 % | 100–150 % | >50 % | 110 % |
Technical data for PERMABOND UV6231
| Product information | |
|---|---|
| Manufacturer | Permabond Engineering Adhesives Ltd |
| brand | Permabond |
| Container | 50 ml, 250 ml |
| Country of origin | Italy |
| UFI (Unique Formula Identifier) | 1Y10-K0C1-S00S-VTKE |
| Performance at final strength | |
|---|---|
| Tensile strength (ISO37) | 10 N/mm2 |
| Refractive index | >1,490 |
| Elongation at break (elasticity) (ISO37) | >120% |
| Dielectric strength | 12 kV/mm |
| Dielectric constant 1MHz at 25°C | 4 |
| Water absorption (ISO62) 2 hours in boiling water | 1.2% |
| Physical properties | |
|---|---|
| Color | Translucent |
| Chemical group | Methacrylic acid esters |
| Viscosity (adhesives) | High viscosity >5000 mPas |
| Viscosity 20rpm | 5000-8000 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Curing wavelength | 365-400 nm |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 45-50 |
| Thermal properties | |
|---|---|
| Operating temperature (°C) | -55 to +120 |
| 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) 2
Frequently asked questions about Permabond UV6231
Practical application and design questions — answered by SILITECH.
Permabond UV6231 is a methacrylate ester (UV-curing) adhesive with a viscosity of 5,000–8,000 mPa·s @ 20 rpm. This weather- and moisture-resistant UV adhesive is suitable for bathrooms, outdoor applications, and temperatures up to 70 °C/90% RH. The adhesive cures upon exposure to UV light in the 365–400 nm spectral range, providing instant curing on demand.
Permabond UV6231 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 UV6231 typically cures in: 5 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 UV6231 bonds reliably to glass/steel: 10 N/mm². For thermoplastic substrates, we recommend testing compatibility before series production — release agents on injection-molded parts can impair adhesion.
Permabond UV6231 is a weather- and moisture-resistant UV adhesive (bathroom/outdoor) (5,000–8,000 mPa·s @ 20 rpm viscosity, >120% elongation at break). Permabond UV6160 is optically clear in thick layers (1,000–2,000 mPa·s, 100–150% elongation at break).
When stored at 5 to 25 °C and protected from light, Permabond UV6231 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 UV6231 (weatherproof and moisture-resistant UV adhesive (bathroom/outdoor)); Permabond UV6160 (optically clear, thick); Permabond UV675 (crystal clear); Permabond UV630 (biocompatible plastic). In shaded 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 |
| UFI (Unique Formula Identifier) | 1Y10-K0C1-S00S-VTKE |
| Performance at final strength | |
|---|---|
| Tensile strength (ISO37) | 10 N/mm2 |
| Refractive index | >1,490 |
| Elongation at break (elasticity) (ISO37) | >120% |
| Dielectric strength | 12 kV/mm |
| Dielectric constant 1MHz at 25°C | 4 |
| Water absorption (ISO62) 2 hours in boiling water | 1.2% |
| Physical properties | |
|---|---|
| Color | Translucent |
| Chemical group | Methacrylic acid esters |
| Viscosity (adhesives) | High viscosity >5000 mPas |
| Viscosity 20rpm | 5000-8000 |
| Specific gravity | 1.1 |
| Curing values | |
|---|---|
| Curing wavelength | 365-400 nm |
| Mechanical properties | |
|---|---|
| Hardness (Shore D) | 45-50 |
| Thermal properties | |
|---|---|
| Operating temperature (°C) | -55 to +120 |
| Storage temperature (°C) | 5-25 |
| Keywords | |
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| Keywords | |
Documents and datasheets
Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: