Silicones, silicone oils, sprays
Casting and potting resins
Internal reference:
49-225.FL.L001
HS code:
35.069.190.000
Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Brand
- Permabond
- Manufacturer
- Permabond Engineering Adhesives Ltd
- Container
- 1 l
- Country of origin
- Italy
- Flash point
- -4°C
- UFI (Unique Formula Identifier)
- 38N0-D0CM-1006-SHQ5
Physical Properties
- Color
- green
- Viscosity (adhesives)
- 0.7 mPa·s
- Specific Gravity
- 0.7
- Boiling point
- 45-100°C
- Evaporation rate
- 7.7
Thermal Properties
- Storage Temperature (°C)
- 5 to 25°C
Product Description
Permabond A905 is a surface activator for use with anaerobic Permabond adhesives (A011, A113, A130, etc.) — accelerates curing on inactive surfaces and improves gap curing with coarse tolerances.
Anaerobic adhesives cure in the absence of air and in contact with metal — this works quickly on copper and steel, but on inactive surfaces such as stainless steel, zinc, or aluminum, curing can be significantly slowed. A905 is applied to one of the two bonding surfaces, allowed to flash off well, and then provides a thin activating film.
The high evaporation rate (7.7 × butyl acetate) ensures rapid flash-off — no waiting time required. A905 additionally improves gap curing in coarse tolerances where anaerobic curing itself would only progress slowly. Available as a liquid and as a spray (A 905 Spray).
Surface activator for the Permabond A-series — accelerates the curing of anaerobic adhesives on inactive surfaces such as stainless steel, zinc, or aluminum. Improves gap curing with coarse tolerances.
What sets Permabond A905 apart
What is Permabond A905 used for?
Processing
Recommended accessories
Important Notes
Which Permabond anaerobic adhesive for which application?
Permabond A905 in direct comparison with related products from the A-series.
Permabond A905 Current Product | Permabond A 905 Spray → | Permabond Cleaner A Aerosol → | Permabond A011 → | |
|---|---|---|---|---|
| Application / Strength | Surface Activator (Liquid) | Spray instead of liquid | Degreaser, not an activator | Adhesive (instead of activator) |
| Viscosity | 0.7 mPa·s | Aerosol | Aerosol | 500 mPa·s |
| Max. gap fill. | — | — | — | 0.12 mm |
| Breakaway Torque | — | — | — | 4 N·m |
| Prevailing torque | — | — | — | 5 N·m |
Frequently asked questions about Permabond A905
Practical application and design questions — answered by SILITECH.
Permabond A905 is a surface activator for use with anaerobic Permabond adhesives — accelerates curing on inactive surfaces such as stainless steel, zinc, or aluminum and improves through-cure in gap-filling applications with coarse tolerances. Surface activator for anaerobic adhesives — accelerates curing on inactive surfaces.
Apply A905 thinly and evenly to ONE of the two bonding surfaces. Allow to flash off completely (a few seconds to minutes). Then apply the anaerobic adhesive to the UNTREATED bonding surface. Activator and adhesive must not be mixed directly — this will lead to premature curing.
A905 is compatible with the entire anaerobic Permabond A-series — threadlockers (A011, A113, A126, A130, A025, A131, A134, A118), shaft-hub adhesives (A1042, A1046, A1062), thread sealants (A129, A1044, A1058) and flange sealants (A136). A905 has no activating effect on other adhesive types (cyanoacrylates, epoxides, UV acrylates).
A905 is particularly worthwhile on inactive surfaces — stainless steel, zinc (galvanized steel), aluminum, and some coatings. On steel, copper, and their alloys, anaerobic curing is already fast without an activator. Its use is also advisable at low ambient temperatures or with large bond gaps.
Permabond offers A905 as a liquid (for high processing volumes, dipping, cloth application) and as A 905 Spray (aerosol, for selective or hard-to-reach areas). The chemistry is identical — the choice depends on the application method.
When stored correctly at 5 to 25 °C, A905 remains stable until the printed expiration date. As the product contains solvents, keep the bottle tightly closed — otherwise evaporation will occur and effectiveness will diminish.
A905 contains solvents (flash point −4 °C) — fire and flash fire hazard. Use only in well-ventilated areas, keep away from open flames, sparks, and hot surfaces. Avoid eye and skin contact; refer to the SDS for complete safety data.