Silicones, silicone oils, sprays
Casting and potting resins)
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Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Manufacturer
- Permabond Engineering Adhesives Ltd
- Brand
- Permabond
- Container
- 20 g, 50 g, 500 g, 2 kg
- Country of origin
- Italy
- UFI (Unique Formula Identifier)
- 94K0-R03P-C00U-704J
Physical Properties
- Specific Gravity
- 1.1
- Color
- colorless
- Chemical group
- Ethyl Cyanoacrylate
- Viscosity (adhesives)
- Low viscosity <500 MPas
- Viscosity mPa.s
- 30-50
Electrical Properties
- Dielectric Constant
- 2.5 (@ 10 kHz)
- Dielectric strength (ASTM D-149)
- 25 kV/mm
Curing values
- Maximum gap fill (mm)
- 0.1
- Fixture time on steel (sec.)
- 10-15
- Hand Strength Rubber (sec.)
- 5-10
- Hand Strength Phenol (sec.)
- 5-10
- Final strength
- 24 hours
Product Approvals
- MIL-A-46050C Type II Class 1
- Approved
- WRAS Drinking Water Approval
- cold water use only
Mechanical properties
- Impact strength (ASTM D950)
- 3-5 kJ/m²
- Hardness (Shore D)
- 85
Shear strength ISO 4587 in N/mm²
- PC
- >5
- Steel
- 18-22
- Aluminum
- 6-8
- Zinc
- 6-8
- ABS
- >6
- PVC
- >6
- Phenol
- >6
Thermal Properties
- Thermal conductivity
- 0.1 W/(m·K)
- Coefficient of thermal expansion
- 90 × 10⁻⁶ mm/mm/°C
- Operating temperature (°C)
- -55 to +80
- Storage Temperature (°C)
- 2-7
Product Description
Permabond 105 is a one-component, low-viscosity cyanoacrylate adhesive with particularly high purity — the special choice for demanding rubber and plastic bonding applications where blooming or discoloration are undesirable.
With a viscosity of 30–50 mPa·s, Permabond 105 fills gaps up to 0.1 mm and produces a particularly clean, almost blooming-free adhesive seam — ideal for visible components, electronics, or optically sensitive applications where the typical white haze around the bond line is undesirable.
One strength: Permabond 105 reliably bonds natural rubber, EPDM, and butyl rubber — elastomers where standard cyanoacrylates often fail.
WRAS Drinking Water Approval (cold water use only) — British drinking water approval for direct contact with cold potable water. Suitable for sanitary, food, and water installation components.
What sets Permabond 105 apart
What is Permabond 105 used for?
Processing
Recommended accessories
Important Notes
Which Permabond for which application?
Permabond 105 in direct comparison with the related cyanoacrylate products in our range.
| Permabond 101 → | Permabond 102 → |
Permabond 105
Current Product
|
Permabond 910 → | |
|---|---|---|---|---|
| Chemistry | Ethyl Cyanoacrylate | Ethyl Cyanoacrylate | Ethyl Cyanoacrylate | Methyl cyanoacrylate |
| Viscosity | 2–3 mPa·s | 70–90 mPa·s | 30-50 mPa·s | 70–90 mPa·s |
| Max. gap fill. | 0.05 mm | 0.15 mm | 0.1 mm | 0.15 mm |
| Finger-tight on steel | 3–5 s | 10–15 s | 10–15 s | 10–15 s |
| Shear strength steel | 19–23 N/mm² | 19–23 N/mm² | 18-22 N/mm² | 23–29 N/mm² |
| Strength / Recommended for | Wicking, micro gaps, precision |
All-purpose bonding, larger gap widths |
High purity, rubber/ plastic bonding |
Universal all-rounder, highest steel strength |
Frequently Asked Questions about Permabond 105
Practical application and design questions — answered by SILITECH.
Permabond 105 is a low-viscosity ethyl cyanoacrylate adhesive (30–50 mPa·s) with exceptionally high purity. Ideal for demanding rubber bonding (natural rubber, EPDM, butyl, Buna-N), difficult-to-bond plastics, and visible components where the typical blooming (white haze) around standard cyanoacrylate bond lines is undesirable. Maximum gap fill 0.1 mm, hand strength on steel in 10–15 seconds.
Permabond 105 is the special choice for demanding elastomers: natural rubber, EPDM, butyl rubber, Buna-N, and NBR. It reliably bonds steel (18–22 N/mm²), aluminum, zinc, ABS, PVC, phenolic resins, and plastics that are difficult to bond. For polypropylene (PP), polyethylene (PE), PTFE, and silicone, pretreatment with Permabond Polyolefin Primer (POP) is required.
Blooming refers to the whitish haze or deposit that forms around the bond line with standard cyanoacrylate adhesives — caused by evaporating monomer condensing on adjacent surfaces. Permabond 105 has a particularly pure formulation with significantly reduced blooming effect — keeping the area around the bond clean for visible parts, optical applications, and electronics.
Permabond 105 is approved to MIL-A-46050C Type II Class 1 for existing designs — the internationally established specification for high-performance cyanoacrylate industrial adhesives. As such, Permabond 105 is qualified for demanding industrial, aerospace, and defense applications.
Permabond 105 is lower in viscosity (30–50 mPa·s) than Permabond 102 (70–90 mPa·s) and has particularly high purity — almost blooming-free. Permabond 105 is the special choice for demanding rubber bonding (NR, EPDM, butyl) and visible components. Permabond 102, on the other hand, is the all-rounder for standard bonding tasks with larger gaps (up to 0.15 mm) and substrate failure on ABS, PVC, and polycarbonate.
Permabond 105 is stored unopened in a cool place at 2 to 7 °C and remains stable until the printed expiration date. Before opening, allow the bottle to warm to room temperature — this prevents internal condensation, which would reduce shelf life. Opened bottles remain functional for several months when stored correctly, although the curing speed may decrease over time.
For demanding rubber bonding applications (NR, EPDM, Butyl) and visible components with high purity requirements, choose Permabond 105. For micro gaps and wicking applications, Permabond 101 is the right choice (2–3 mPa·s, max. 0.05 mm). For general bonding with larger gaps and substrate failure on ABS/PVC/PC, Permabond 102 is recommended. Universal applications with the highest steel strength are covered by Permabond 910 . For polypropylene, polyethylene, PTFE, and silicone, pretreatment with Permabond POP-Primer is always required.