Silicones, silicone oils, sprays
Casting and potting resins)
)
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Manufacturer
- Permabond Engineering Adhesives Ltd
- Brand
- Permabond
- Container
- 50 ml, 250 ml, 1 l, 2 l
- Country of origin
- Italy
- UFI (Unique Formula Identifier)
- NHF1-609A-200P-8W14
Performance at Full Cure
- Tensile strength (ISO37)
- 16 N/mm²
- Refractive index
- >1,490
- Elongation at break (elasticity) (ISO37)
- >80%
- Dielectric Strength
- 12 KV/mm
- Dielectric constant 1MHz at 25°C
- 4
- Water absorption (ISO62) 2 hrs in boiling water
- <4%
Physical Properties
- Color
- Light-transmitting
- Chemical group
- Methacrylate ester
- Viscosity (adhesives)
- Medium viscosity 500 - 5000 mPas
- Viscosity at 20 rpm
- 2200-2900
- Specific Gravity
- 1.0
Curing values
- Curing Wavelength
- 365-400 nm
Mechanical properties
- Hardness (Shore D)
- 65-75
Thermal Properties
- Operating temperature (°C)
- -55 to +120
- Storage Temperature (°C)
- 5-25
Product Description
Permabond UV620 is an optically clear, non-yellowing UV-curing adhesive for glass-metal bonding — specially developed for glass furniture and load-bearing connections with aesthetic requirements.
With a viscosity of 2,200–2,900 mPa·s, UV620 is medium-viscosity and covers standard glass gaps. Its refractive index of >1.490 is practically equivalent to glass—the adhesive joint becomes optically invisible.
The high resistance to yellowing makes UV620 suitable for outdoor and high-performance applications where the adhesive seam must remain clear for years. With a tensile strength of 16 N/mm² (ISO37) and elongation at break of 80%, load-bearing glass furniture bonding is easily achievable.
Optically clear and non-yellowing UV-resistant glass-to-metal adhesive — specially designed for glass furniture requiring high-strength bonds. Medium viscosity for standard geometries, refractive index >1.490 for invisible bond lines on glass.
What makes Permabond UV620 stand out
What is Permabond UV620 used for?
Processing
Recommended accessories
Important Notes
Which Permabond UV adhesive for which application?
Permabond UV620 in direct comparison with related products of the UV series.
Permabond UV620 Current Product | Permabond UV610 → | Permabond UV605 → | Permabond UV6160 → | |
|---|---|---|---|---|
| Application | Optically clear UV adhesive for glass-metal | Higher strength, less clear | Low viscosity for micro gaps | Optically clear in thick layers |
| Viscosity | 2,200–2,900 mPa·s @ 20 rpm | 600–1,300 mPa·s | 50–100 mPa·s | 1,000–2,000 mPa·s |
| Substrate Strength | 9–10 N/mm² | 13–16 N/mm² | 10–14 N/mm² | 11 N/mm² |
| Elongation at break | >80 % | 95 % | 90 % | 100–150 % |
Frequently asked questions about Permabond UV620
Practical application and design questions — answered by SILITECH.
Permabond UV620 is a methacrylic acid ester (UV-curing) adhesive with a viscosity of 2,200–2,900 mPa·s @ 20 rpm. This optically clear, UV-curing glass-to-metal adhesive is resistant to yellowing and suitable for aesthetically demanding glass furniture. The adhesive cures upon exposure to UV light in the 365–400 nm spectral range, providing instant curing on demand.
Permabond UV620 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 UV620 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 UV620 bonds reliably to glass/steel: 9–10 N/mm². For thermoplastic substrates, we recommend testing compatibility before series production — release agents on injection-molded parts can impair adhesion.
Permabond UV620 is an optically clear UV adhesive for glass-to-metal bonding (2,200–2,900 mPa·s @ 20 rpm viscosity, >80% elongation at break). Permabond UV610 is a high-strength adhesive for glass furniture (600–1,300 mPa·s, 95% elongation at break) — higher strength, less clear.
When stored at 5 to 25 °C and protected from light, Permabond UV620 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 UV620 (optically clear UV adhesive for glass-to-metal); Permabond UV610 (high-strength glass furniture); Permabond UV605 (wicking); Permabond UV6160 (clear thick layers). 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.