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PERMABOND 940

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Permabond 940 — anaerobic adhesive, viscosity 3-10 mPa·s, Shore D 85.

Low odor and non-blooming — clean adhesive seams without white evaporation edges.

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  • brand
  • Container
  • Color
  • Country of origin
  • Chemical group
  • Viscosity (adhesives)
  • Viscosity mPa·s
  • Maximum gap width (mm)
  • PVC hand strength (seconds)
  • Hand strength of phenol (seconds)
  • ABS hand strength (sec.)
  • Neoprene hand strength (sec.)
  • Steel hand strength (sec.)
  • Handling strength of aluminum (sec.)
  • Hand strength of zinc (seconds)
  • Steel
  • aluminum
  • zinc
  • ABS
  • PC
  • phenol
  • Storage temperature (°C)
  • Hardness (Shore D)
  • Final strength
  • Operating temperature (°C)
  • Impact resistance (astm D-950)
  • Dielectric strength

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Low-viscosity, low-odor cyanoacrylate , alkoxyethyl cyanoacrylate, PERMABOND 940 low-odor superglue , non-blooming adhesive, low-odor cyanoacrylate, adhesive for dark surfaces, blooming-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

Internal reference: 49-940.FL

HS code: 3506.9190000

Internal reference: 49-940.FL
HS code: 3506.9190000

PERMABOND 940
PERMABOND 940
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-940.FL

Permabond 940 is the ultra-low viscosity variant of the Permabond Low-Bloom range — a low-odor alkoxyethyl cyanoacrylate adhesive that produces neither white evaporation edges nor strong fumes, making it the best CA choice in terms of aesthetics and occupational health.

With a viscosity of 3–10 mPa·s, 940 is ultra-low-viscosity and capable of wicking—capillary penetration into joined components and micro-gaps down to 0.05 mm. The alkoxyethyl chemistry fundamentally distinguishes 940 from standard ethyl CAs.

Two properties make the 940/941/943/947 series special: First, low bloom—the white residue that forms next to the adhesive joint due to evaporation with standard cyanoacrylates is almost completely absent. Second, reduced odor emission—the adhesive can also be used in areas without active ventilation. On steel, 940 provides a shear strength of 16–20 N/mm², and on NBR, it cures in 2 to 5 seconds.

SPECIAL FEATURE

Low odor and non-blooming — the alkoxyethyl chemistry reduces solvent vapors and prevents the white bloom pattern thatstandard cyanoacrylates leave behind next to the adhesive joint when they evaporate. Visually clean bonds, even on dark surfaces.

Permabond 940 in figures
3–10
mPa·s viscosity
Low-Bloom
Non-flowering
Low odor
Working comfort
16–20
N/mm² steel

What makes Permabond 940 stand out

Low-bloom (non-blooming)
No white evaporation line next to the adhesive seam — clean appearance even on dark surfaces.
Low odor
Reduced solvent vapors — also usable in rooms without active ventilation.
Ultra-low viscosity
3–10 mPa·s — Wicking-capable, flows into micro-gaps and into joined components via capillary action.
Very fast NBR/neoprene curing
2–5 seconds — suitable for high-speed line production.
Substrate failure in ABS and PC
The bond is stronger than the plastic substrate — if it breaks, the component tears.
Tight tolerances
0.05 mm gap filling — micromechanics and precision bonding.

What is Permabond 940 used for?

Wicking on dark or visible adhesive surfaces
No white evaporation edge — aesthetically clean adhesive seams.
Bonding without active ventilation
Low odor — workshops, service areas, exhibition or office areas.
Micromechanics and precision instrument manufacturing
Tight tolerance fits with gap widths down to 0.05 mm.
Electronics manufacturing
Excellent dielectric properties and low viscosity for component fixation.
Visually visible industrial assembly
When the adhesive seam remains visible on the component — cosmetics, toy or consumer goods sector.

processing

1
Clean surfaces
Bonding surfaces must be clean, dry, and free of grease. Degrease with acetone or isopropanol. Lightly sand aluminum, copper, and their alloys to remove the oxide layer.
2
Use adhesive sparingly
Apply Permabond 940 only drop by drop to a bonding surface — the thin layer is crucial for rapid curing.
3
assembling components
Quickly and correctly align the parts. Apply enough pressure so that the adhesive spreads into a thin film.
4
Secure until firmly in place
Do not disturb or realign until handling strength is reached (typically a few seconds to one minute, depending on the substrate). Final strength is reached after 24 hours.
5
Remove adhesive residue
Excess adhesive can be removed with Permabond CA Solvent 2, nitromethane or acetone.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

Permabond Activator CSA
Accelerates curing and enables bonding on porous or acidic surfaces.
View product →
Permabond POP Primer
Polyolefin primer for the pretreatment of PP, PE, PTFE and silicone — without a primer, reliable cyanoacrylate bonding is not possible on these materials.
View product →
Permabond Cleaner A Aerosol
Spray cleaner for quick degreasing and preparation of the bonding surfaces before applying cyanoacrylate.
View product →
Permabond CA Solvent 2
Special solvent for removing hardened cyanoacrylate adhesive residue — gentler than acetone or nitromethane.
View product →

Important instructions

Not suitable for / Important notes
For porous or difficult surfaces, Permabond CSA activator is recommended. Permabond POP primer is mandatory before bonding PP, PE, PTFE, or silicone.
storage
Store refrigerated at 2 to 7 °C. Allow the bottle to warm to room temperature before opening – this prevents condensation and protects the shelf life.

Which Permabond is suitable for which application?

Permabond 940 in direct comparison with related cyanoacrylate products.

Permabond 940
Current product		Permabond 941 →Permabond 943 →Permabond 947 →
ChemistryAlkoxyethyl cyanoacrylateAlkoxyethyl-CAAlkoxyethyl-CAAlkoxyethyl-CA
viscosity3-10 mPa·s10–20 mPa·s90–110 mPa·s900–1,500 mPa·s
Maximum gap filling.0.05 mm0.08 mm0.15 mm0.25 mm
Firmly on steel10–15 s10–15 s10–15 s20–30 s
Shear strength steel16-20 N/mm²16-20 N/mm²16-20 N/mm²16-20 N/mm²
Strength / Recommended forLow Odor
Low-Bloom		Low viscosityMedium viscosityPasty, vertical/coarse column
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Low-viscosity, low-odor cyanoacrylate , alkoxyethyl cyanoacrylate, PERMABOND 940 low-odor superglue , non-blooming adhesive, low-odor cyanoacrylate, adhesive for dark surfaces, blooming-free

Technical data for PERMABOND 940

All 28 product information 4 Performance at final strength 2 Physical properties 4 Curing values ​​9 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 6 Thermal properties 2
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 20 g, 50 g
Country of origin Italy
Performance at final strength
Impact resistance (astm D-950) 3-5 kJ/m²
Dielectric strength 25 kV/mm
Physical properties
Color colorless
Chemical group Alkoxyethyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 3-10
Curing values
Maximum gap width (mm) 0.05
PVC hand strength (seconds) 10-15
Hand strength of phenol (seconds) 10-15
ABS hand strength (sec.) 10-15
Neoprene hand strength (sec.) 2-5
Steel hand strength (sec.) 10-15
Handling strength of aluminum (sec.) 10-15
Hand strength of zinc (seconds) 30-40
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 16-20
aluminum 8-9
zinc 8
ABS >6
PC >5
phenol 12-14
Thermal properties
Storage temperature (°C) 2-7
Operating temperature (°C) -55 to +80

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 940 - Technical Data Sheet DE.pdf
336 KB
Permabond 940 - Technical Data Sheet EN.pdf
376 KB
Permabond 940 - Fiche Technique FR.pdf
343 KB
Safety Data Sheets (SDS) 3
Permabond 940 - Safety Data Sheet DE.pdf
275 KB
Permabond 940 - Safety Data Sheet EN.pdf
253 KB
Permabond 940 - Fiche de Sécurité FR.pdf
256 KB

Frequently asked questions about Permabond 940

Practical application and design questions — answered by SILITECH.

Permabond 940 is an alkoxyethyl cyanoacrylate instant adhesive with a viscosity of 3–10 mPa·s and a maximum gap filling of 0.05 mm. This low-odor, non-blooming cyanoacrylate adhesive features ultra-low viscosity for wicking and aesthetic bonding.

Permabond 940 reliably bonds steel (16–20 N/mm²), aluminum (8–9 N/mm²), ABS (>6 N/mm² (substrate failure)), polycarbonate (>5 N/mm² (substrate failure)), as well as Buna-N rubber and similar elastomers. For polypropylene (PP), polyethylene (PE), PTFE, and silicone, pretreatment with Permabond Polyolefin Primer (POP) is required.

Low odor and non-blooming — the alkoxyethyl chemistry reduces solvent vapors and prevents the white bloom pattern thatstandard cyanoacrylates leave behind next to the adhesive joint when they evaporate. Visually clean bonds, even on dark surfaces.

Permabond 940 reaches handling strength on steel in 10–15 seconds. Other typical curing times: 2–5 seconds (NBR), 10–15 seconds (PVC/phenol/ABS), 30–40 seconds (zinc). The final strength of 16–20 N/mm² (steel) is reached after 24 hours. Temperature, humidity, and substrate affect the curing rate.

Permabond 940 offers a viscosity of 3–10 mPa·s, a gap filling capacity of 0.05 mm, and a shear strength of 16–20 N/mm² on steel. Permabond 941 has a viscosity of 10–20 mPa·s, a gap filling capacity of 0.08 mm, and a shear strength of 16–20 N/mm² on steel (low viscosity). Both utilize an alkoxyethyl cyanoacrylate base (or a related cyanoacrylate variant).

Permabond 940 should be stored unopened refrigerated at 2 to 7 °C and is stable until the printed expiration date. Allow the bottle to warm to room temperature before opening—this prevents condensation inside, which would reduce its shelf life. Opened bottles remain functional for several months if stored correctly, although the curing rate may decrease over time. We recommend a test bond to check reactivity before critical production applications.

From the Permabond cyanoacrylate range, select according to viscosity and special properties: Permabond 940 (3–10 mPa·s, 0.05 mm gap width, low odor); Permabond 941 (10–20 mPa·s, 0.08 mm, low viscosity); Permabond 943 (90–110 mPa·s, 0.15 mm, medium viscosity); Permabond 947 (900–1,500 mPa·s, 0.25 mm, pasty, vertical/coarse gaps). For polypropylene, polyethylene, PTFE, and silicone, pretreatment with Permabond Polyolefin Primer (POP) is always required.

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Product specifications

Product information
Container 20 g or 50 g
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Country of origin Italy
Performance at final strength
Impact resistance (astm D-950) 3-5 kJ/m²
Dielectric strength 25 kV/mm
Physical properties
Color colorless
Chemical group Alkoxyethyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 3-10
Curing values
Maximum gap width (mm) 0.05
PVC hand strength (seconds) 10-15
Hand strength of phenol (seconds) 10-15
ABS hand strength (sec.) 10-15
Neoprene hand strength (sec.) 2-5
Steel hand strength (sec.) 10-15
Handling strength of aluminum (sec.) 10-15
Hand strength of zinc (seconds) 30-40
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 16-20
aluminum 8-9
zinc 8
ABS >6
PC >5
phenol 12-14
Thermal properties
Storage temperature (°C) 2-7
Operating temperature (°C) -55 to +80
Keywords
Keywords
Low-viscosity, low-odor cyanoacrylate , alkoxyethyl cyanoacrylate, PERMABOND 940 low-odor superglue , non-blooming adhesive, low-odor cyanoacrylate, adhesive for dark surfaces, blooming-free

Documents and datasheets

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