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PERMABOND UV632

PERMABOND UV632

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UV adhesive urethane methacrylate — toughened for plastics

Low-viscosity urethane methacrylate UV adhesive — toughened for tight tolerance plastic fits.

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  • brand
  • Container
  • Color
  • Country of origin
  • Chemical group
  • Viscosity (adhesives)
  • Viscosity 20rpm
  • Specific gravity
  • Curing wavelength
  • Operating temperature (°C)
  • Storage temperature (°C)
  • Tensile strength (ISO37)
  • Refractive index
  • Elongation at break (elasticity) (ISO37)
  • Hardness (Shore D)
  • Dielectric strength
  • Dielectric constant 1MHz at 25°C
  • Water absorption (ISO62) 2 hours in boiling water
  • Shear strength polycarbonate
  • Acrylic
  • PET
  • UFI (Unique Formula Identifier)

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Acrylic UV-curable , metal , plastic, glass , low viscosity , solvent-free

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
(availability will be confirmed after ordering)

. Express logistics. Fast and reliable within Switzerland & Europe.

Shipping from Swiss warehouse within 24 hours. Batch certificate. Invoice within 30 days (B2B). Technical support.
Shipping & Delivery

Usually 1 to 3 working days

Availability will be confirmed after order receipt.

Express logistics within Switzerland & Europe.

General Terms and Conditions →

Product data

HS code: 3506.9190000

HS code: 3506.9190000

PERMABOND UV632
PERMABOND UV632
Permabond Permabond Engineering Adhesives Ltd

Permabond UV632 is the low-viscosity urethane methacrylate variant of the UV plastics range — combining wicking ability with toughened strength for tight tolerance fits with dynamic loading.

With a viscosity of 200–400 mPa·s, UV632 is low-viscosity and can flow into tightly toleranced plastic fits via capillary action. The urethane methacrylate chemistry provides higher elongation at break and impact strength than pure methacrylate UV adhesives.

Polycarbonate affinity leads to substrate failure above 7 N/mm². Reliable bonding of PET and acrylic is also possible. Long-wavelength curing (365–420 nm) allows bonding of UV-stabilized substrates.

APPLICATION PROFILE

Low-viscosity urethane methacrylate variant — combines the wicking properties of UV630 with the impact resistance of urethane chemistry. Ideal for tight-tolerance plastic fits under dynamic loads.

Permabond UV632 in figures
Urethane
Toughened
200–400
low mPa·s
>70 %
Elongation at break
365–420 nm
Long wavelength

What distinguishes Permabond UV632

Urethane methacrylate
Toughened and elasticized — higher impact resistance than standard methacrylate.
Low viscosity
200–400 mPa·s — Wicking-capable in tightly toleranced fits.
Substrate failure in PC
>7 N/mm² — Bond stronger than polycarbonate.
Long-wave UV curing
365–420 nm — UV-stabilized plastics.
>70% elongation at break
Flexible and impact resistant.
PET and acrylic bonding
Multi-substrate bonding.

What is Permabond UV632 used for?

Tightly toleranced plastic fits
Wicking capability for micro-gaps.
Dynamically stressed PC adhesive
Impact and peel resistant.
PET components
Packaging and industrial bonding.
Acrylic bonding under stress
If UV630 were too brittle.
Multi-substrate bonding
Different plastics in one application.

processing

1
Clean surfaces
Prepare bonding surfaces to be clean, dry, and free of grease — degrease with isopropanol or acetone. For aluminum/copper, lightly sand to remove the oxide layer. Test compatibility on plastics.
2
Apply adhesive thinly
Apply Permabond UV632 thinly and evenly – directly from the bottle or using a dispensing device. Keep the adhesive protected from light. Avoid air bubbles.
3
Adding and aligning components
Quickly and precisely assemble. When bonding glass, spread the adhesive into a thin film by applying pressure. Do not move components during UV curing.
4
Cure with UV light
Point the UV lamp at the adhesive gap. Curing time depends on the lamp power, wavelength, and light transmittance of the components — typically 1–5 seconds for a 30 W/cm² fiber optic system or 5–15 seconds for a 4 mW/cm² low-power lamp.
5
Full strength after UV irradiation
After complete UV curing, the components are immediately ready for handling. Final strength is achieved immediately after irradiation. For dual-cure products (UV + anaerobic), an additional 24 hours are required for complete anaerobic curing of the shaded areas.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

Permabond Cleaner A Aerosol
Spray cleaner for the rapid degreasing of bonding surfaces before applying UV adhesive — reliably removes oil, grease and release agents.
View product →
Permabond UV620 — glass standard
Optically clear glass-metal UV adhesive for high-quality glass furniture — the all-rounder of the UV range.
View product →
Permabond UV630 — Biocompatible plastic
UV adhesive for plastics (polycarbonate, acrylic) — biocompatible according to ISO 10993-5, long-wave curing 365–420 nm.
View product →
Permabond UV7141 — Dual-Cure UV+Anaerobic
UV + anaerobic dual curing for shaded areas — ceramic-coated glass, backlit mirrors, overlapping adhesive surfaces.
View product →

Important instructions

Not suitable for / Important notes
Store away from light.
storage
Store at 5 to 25 °C and protect from direct sunlight. Curing begins under UV light — keep the bottle in the dark and open only under UV-blocked light.

Which Permabond UV adhesive is suitable for which application?

Permabond UV632 in direct comparison with related products of the UV series.

Permabond UV632
Current product		Permabond UV630 →Permabond UV648 →Permabond UV639 →
ApplicationUV adhesive for plastics — low viscosity urethane methacrylateMethacrylate, biocompatibleHigh-viscosity variantMaximum elongation at break
viscosity200–400 mPa·s @ 20 rpm250 mPa·s20,000–40,000 mPa·s1,300 mPa·s
Substrate strength>7 N/mm² (substrate failure)PolycarbonatPolycarbonatAcrylic/PETG
Elongation at break>70 %110 %>70 %>220 %
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Acrylic UV-curable , metal , plastic, glass , low viscosity , solvent-free

Technical data for PERMABOND UV632

All 23 product information 5 Performance at final strength 7 Physical properties 5 Curing values ​​1 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 2 Thermal properties 2
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 50 ml, 1 l, 2 l
Country of origin Italy
UFI (Unique Formula Identifier) NUF1-701W-900P-W8CD
Performance at final strength
Tensile strength (ISO37) 13 N/mm²
Refractive index >1,490
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) Low viscosity <500 MPas
Viscosity 20rpm 200-400
Specific gravity 1.1
Curing values
Curing wavelength 365 - 420 nm
Mechanical properties
Hardness (Shore D) 55-75
Shear strength ISO 4587 in N/mm²
Acrylic >3 N/mm²
PET >4 N/mm²
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) 3
Permabond UV632 - Technical Data Sheet DE.pdf
307 KB
Permabond UV632 - Technical Data Sheet EN.pdf
318 KB
Permabond UV632 - Fiche Technique FR.pdf
282 KB
Safety Data Sheets (SDS) 3
Permabond UV632 - Safety Data Sheet DE.pdf
480 KB
Permabond UV632 - Safety Data Sheet EN.pdf
475 KB
Permabond UV632 - Fiche de Sécurité FR.pdf
479 KB

Frequently asked questions about Permabond UV632

Practical application and design questions — answered by SILITECH.

Permabond UV632 is a urethane methacrylate (UV-curing, long-wavelength) adhesive with a viscosity of 200–400 mPa·s @ 20 rpm. This low-viscosity urethane methacrylate UV adhesive is toughened and elasticized for tight-tolerance plastic fits. The adhesive cures upon irradiation with UV light in the spectral range of 365–420 nm—curing in seconds, "on demand.".

Permabond UV632 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 UV632 depends on the lamp power, wavelength, and light transmittance of the components. Typical curing times range from seconds to a few minutes.

Permabond UV632 bonds reliably to: Polycarbonate: >7 N/mm² (substrate failure); Acrylic: >3 N/mm²; PET: >4 N/mm². For thermoplastic substrates, we recommend testing compatibility before series production — release agents on injection-molded parts can impair adhesion.

Permabond UV632 is a UV adhesive for plastics — low-viscosity urethane methacrylate (200–400 mPa·s @ 20 rpm viscosity, >70% elongation at break). Permabond UV630 is a standard low-viscosity (250 mPa·s, 110% elongation at break) — methacrylate, biocompatible.

When stored at 5 to 25 °C and protected from light, Permabond UV632 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 UV632 (UV adhesive for plastics — low-viscosity urethane methacrylate); Permabond UV630 (standard low-viscosity); Permabond UV648 (high-viscosity urethane); Permabond UV639 (highly elastic). 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 1 l or 2 l
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Country of origin Italy
UFI (Unique Formula Identifier) NUF1-701W-900P-W8CD
Performance at final strength
Tensile strength (ISO37) 13 N/mm²
Refractive index >1,490
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) Low viscosity <500 MPas
Viscosity 20rpm 200-400
Specific gravity 1.1
Curing values
Curing wavelength 365 - 420 nm
Mechanical properties
Hardness (Shore D) 55-75
Shear strength ISO 4587 in N/mm²
Acrylic >3 N/mm²
PET >4 N/mm²
Thermal properties
Operating temperature (°C) -55 to +120
Storage temperature (°C) 5-25
Keywords
Keywords
Acrylic UV-curable , metal , plastic, glass , low viscosity , solvent-free

Documents and datasheets

Safety Data Sheets (SDS) and Technical Data Sheets (TDS) are available for download: