Silicones, silicone oils, sprays
Casting and potting resins)
Internal reference:
49-4C40
HS code:
350691900
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Brand
- Permabond
- Manufacturer
- Permabond Engineering Adhesives Ltd
- Container
- 30 g, 500 g
- Curing time at 23°C
- 24 hours
Performance at Full Cure
- Impact strength (ASTM D-950)
- 3-5 kJ/m²
Physical Properties
- Chemical group
- Ethyl Cyanoacrylate
- Viscosity at 25°C
- 1200-2400
- Specific Gravity
- 1.1
- Viscosity (adhesives)
- High viscosity >5000 mPas
Electrical Properties
- Dielectric Constant
- 4,5
Curing values
- Maximum gap fill (mm)
- 0.43
- Fixture time on steel (sec.)
- 5-10
- Hand Strength Rubber (sec.)
- 5-10
- Hand Strength Phenol (sec.)
- 5-10
Mechanical properties
- Hardness (Shore D)
- 85
Shear strength ISO 4587 in N/mm²
- Steel
- 20-22
Thermal Properties
- Storage Temperature (°C)
- 2-7
Product Description
Permabond 4C40 is a high-viscosity, medical-device-grade cyanoacrylate for large gap filling — faster set times and improved gap filling capacity vs. conventional cyanoacrylates, also for difficult-to-bond polyacetals.
Permabond cyanoacrylate instant adhesives in medical device grade — biocompatible (ISO 10993), solvent-free, cross-link in seconds through surface moisture between the components. 4C40 is tailored to specific applications — the most important properties and areas of use are listed below.
Permabond 4C40 is a medium-high viscosity, medical-grade variant — faster than conventional cyanoacrylates, with improved gap-filling properties. Excellent on difficult-to-bond polyacetals (POM).
What distinguishes 4C40
What is 4C40 used for?
Processing
Recommended accessories
4C40 in comparison
Direct comparison with related Permabond products from our range.
4C40 Current Product |
4C30 → | 4C10 → | 4UV80HV → | |
|---|---|---|---|---|
| Chemical Base | Cyanoacrylate (ethyl ester) | Cyanoacrylate (ethyl ester) | Cyanoacrylate (ethyl ester) | Methacrylate ester |
| Viscosity | high viscosity | Medium Viscosity | low viscosity | high viscosity, opaque |
| Grade | Medical Device | Medical Device | Medical Device | Medical Device (ISO 10993-5) |
| Color | colorless | colorless | colorless | opaque |
| Set Time | ~60 s | ~30 s | <10 s (typical) | UV Cure (sec.) |
| Full Cure | 24 h | 24 h | 24 h | UV-cured |
| Main application | Large gap + POM | Auto-dispenser, middle column | Hard-to-bond rubbers | UV Medical Device |
Frequently asked questions about 4C40
Practical application and design questions — answered by SILITECH.
Permabond 4C40: High-viscosity, medical-device-grade cyanoacrylate for large gap filling — faster set times and improved gap filling capacity compared to conventional cyanoacrylates, also suitable for difficult-to-bond polyacetals. Main applications: Medical devices with POM components, large gap bonding, vertical applications.
Medical-Device-Grade cyanoacrylates meet elevated purity standards for medical applications — typically ISO-10993 tests (biocompatibility, cytotoxicity). They have the same instant-curing chemistry as standard CAs (cross-linking via surface moisture), but with controlled purity of ingredients for use in medical devices with patient contact or in pharmaceutical products.
Store in the unopened original container in a dry, cool place — Permabond adhesives typically between +5 and +25 °C, exact values see TDS. Consult the Safety Data Sheet (SDS) before use. Observe the expiry date on the packaging. Store cyanoacrylates cool (ideally refrigerated) for maximum shelf life.
In the comparison table above, you will find related Permabond products with different properties — viscosity, mixing ratio, special certification. If you are unsure about the optimal choice, we will be happy to advise you — contact SILITECH with your specific application (substrate pairing, load, curing condition).