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PERMABOND 919

PERMABOND 919

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Allyl superglue, with post-cure up to 250 °C, MIL Class 1

Post-cure allows for continuous use up to 250 °C — the original allyl cyanoacrylate classic for extreme heat resistance.

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  • Chemical group
  • Viscosity (adhesives)
  • Viscosity mPa·s
  • Maximum gap width (mm)
  • Steel hand strength (sec.)
  • Rubber's hand strength (sec.)
  • Hand strength of phenol (seconds)
  • Steel
  • aluminum
  • ABS
  • PC
  • phenol
  • Storage temperature (°C)
  • Hardness (Shore D)
  • Final strength
  • Operating temperature (°C)
  • Dielectric strength

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Cyanoacrylate High-temperature resistant low viscosity Steel Allyl Cyanoacrylate MIL-A-46050C Type II Class 1 Industrial adhesive Superglue Metal adhesive PERMABOND 919 High-temperature adhesive Electronic bonding

 
General Terms and Conditions.

Shipping usually within 1 to 3 business days
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. 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: 49-919.FL

HS code: 3506.9190000

Internal reference: 49-919.FL
HS code: 3506.9190000

PERMABOND 919
PERMABOND 919
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-919.FL

Permabond 919 is the original allyl cyanoacrylate adhesive — a high-tech, two-stage curing superglue that becomes permanently temperature resistant at 150°C to 250°C after post-cure and carries the rare MIL-A-46050C Type V Class 1 approval.

With a viscosity of 2–6 mPa·s, 919 is ultra-low-viscosity and wicking-capable like Permabond 791 — penetrating micro-gaps by capillary action and filling gaps up to 0.05 mm. However, the allyl chemistry fundamentally distinguishes 919 from standard ethyl cyanoacrylates.

The key to its exceptional heat resistance is the two-stage curing process: After initial room-temperature curing (4 hours), the bond is post-cured for 2 hours at 150 °C. Only then does the bond become permanently resistant to temperatures up to 250 °C—a property unique in the world of cyanoacrylates. Permabond 919 is MIL-A-46050C Type V Class 1 approved and has been established in military, aerospace, and high-temperature industrial applications for decades.

AUTHORIZATION & SPECIAL PROPERTIES

MIL-A-46050C Type V Class 1 — the special high-temperature classification of the MIL-Spec. With the two-stage post-cure process (4 h RT + 2 h at 150 °C), Permabond 919 becomes permanently resistant up to 250 °C — a property that no standard cyanoacrylate achieves.

Permabond 919 in numbers
2–6
mPa·s viscosity
20–22
N/mm² steel
250 °C
With Post-Cure
MIL
V Class 1

What distinguishes Permabond 919

Allyl Cyanoacrylate — Original
The patented Allyl chemistry is the basis for the high-temperature properties of the entire 919/920/922 series.
Post-cure at 250 °C
With two-stage curing (4 h RT + 2 h 150 °C), it can withstand continuous temperatures up to 250 °C — unique among cyanoacrylates.
MIL-A-46050C Type V Class 1
The high-temperature class of the most important cyanoacrylate specification.
Ultra-low viscosity
2–6 mPa·s — Wicking-capable, flows into micro-gaps and into joined components via capillary action.
Excellent phenolic strength
14 N/mm² shear strength on phenolic resin — important for electronics and switchgear manufacturing.
Rapid initial curing
Under 20 seconds hand strength on steel, NBR and Buna-N.

What is Permabond 919 used for?

High-temperature applications up to 250 °C
Using post-cure processes — engine, heating equipment, and industrial furnace components.
Aviation and defense technology
MIL-A-46050C Type V Class 1 approved — qualified for highly demanding industries.
Wicking adhesives with heat requirements
Penetration into assembled components that will later be exposed to high temperatures.
Electronics and switchgear manufacturing
Phenolic resin bonding with a shear strength of 14 N/mm².
Precision micromechanics
Tight tolerance fits with 0.05 mm gap width and high temperature requirements.

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 919 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.
6
Post-cure for high-temperature performance
After bonding, fix for 4 hours at room temperature, then cure for 2 hours at 150 °C — after which the bond can withstand temperatures up to 250 °C.
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 full high-temperature performance, post-cure (4 h room temperature + 2 h at 150 °C) is mandatory. Without post-cure, 919 behaves like a standard cyanoacrylate at lower temperatures. Permabond CSA activator is recommended for porous or difficult surfaces. 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 919 in direct comparison with related cyanoacrylate products.

Permabond 919
Current product		Permabond 920 →Permabond 922 →Permabond 825 →
ChemistryAllyl cyanoacrylateAllyl-CAAllyl-CAEthyl-CA
viscosity2–6 mPa·s80 mPa·s1,200–2,000 mPa·s100–150 mPa·s
Maximum gap filling.0.05 mm0.15 mm0.4 mm0.15 mm
Firmly on steel<20 s15–20 s<20 s10–20 s
Shear strength steel20-22 N/mm²19–23 N/mm²19–23 N/mm²15–20 N/mm²
Strength / Recommended forWith post-cure
250 °C		Medium viscosity, MIL Class 2 + BioPaste, MIL Class 3, 0.4 mm gapContinuous use at 180 °C, without post-cure
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Cyanoacrylate High-temperature resistant low viscosity Steel Allyl Cyanoacrylate MIL-A-46050C Type II Class 1 Industrial adhesive Superglue Metal adhesive PERMABOND 919 High-temperature adhesive Electronic bonding

Technical data for PERMABOND 919

All 22 product information 4 Performance at final strength 1 Physical properties 4 Curing values ​​5 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 5 Thermal properties 2
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 20 g, 500 g
Country of origin Italy
Performance at final strength
Dielectric strength 3-5 kJ/m²
Physical properties
Color colorless
Chemical group Allyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 2-6
Curing values
Maximum gap width (mm) 0.05
Steel hand strength (sec.) <20
Rubber's hand strength (sec.) >15
Hand strength of phenol (seconds) <20
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 20-22
aluminum 16-18
ABS 4
PC 7
phenol 14
Thermal properties
Storage temperature (°C) 2-7
Operating temperature (°C) -55 to +250

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 919 - Technical Data Sheet EN.pdf
388 KB
Permabond 919 - Technical Data Sheet EN.pdf
540 KB
Permabond 919 - Fiche Technique FR.pdf
343 KB

Frequently asked questions about Permabond 919

Practical application and design questions — answered by SILITECH.

Permabond 919 is an allyl cyanoacrylate superglue with a viscosity of 2–6 mPa·s and a maximum gap filling capacity of 0.05 mm. It contains genuine allyl cyanoacrylate—ultra-low flammability, MIL Class 1, and post-cure up to 250 °C.

Permabond 919 reliably bonds steel (20–22 N/mm²), aluminum (16–18 N/mm²), ABS (4 N/mm²), polycarbonate (7 N/mm²), 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.

Permabond 919 is approved according to MIL-A-46050C Type V Class 1 (existing designs) — qualified for demanding industrial applications.

Permabond 919 reaches handling strength on steel in <20 s. Other typical curing times: <15 s (NBR), <20 s (Buna N), <20 s (phenol). The final strength of 20–22 N/mm² (steel) is reached after 24 hours. Temperature, humidity, and substrate affect the curing rate.

Permabond 919 offers a viscosity of 2–6 mPa·s, a gap filling capacity of 0.05 mm, and a shear strength of 20–22 N/mm² on steel. Permabond 920 has a viscosity of 80 mPa·s, a gap filling capacity of 0.15 mm, and a shear strength of 19–23 N/mm² on steel (medium viscosity, MIL Class 2 + Bio). Both utilize an allyl cyanoacrylate base (or a related cyanoacrylate variant).

Permabond 919 should be stored unopened 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 919 (2–6 mPa·s, 0.05 mm gap width, with post-cure); Permabond 920 (80 mPa·s, 0.15 mm, medium viscosity, MIL Class 2 + Bio); Permabond 922 (1,200–2,000 mPa·s, 0.4 mm, paste, MIL Class 3, 0.4 mm gap); Permabond 825 (100–150 mPa·s, 0.15 mm, 180 °C continuous use, without post-cure). 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 500 g
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Country of origin Italy
Performance at final strength
Dielectric strength 3-5 kJ/m²
Physical properties
Color colorless
Chemical group Allyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 2-6
Curing values
Maximum gap width (mm) 0.05
Steel hand strength (sec.) <20
Rubber's hand strength (sec.) >15
Hand strength of phenol (seconds) <20
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 20-22
aluminum 16-18
ABS 4
PC 7
phenol 14
Thermal properties
Storage temperature (°C) 2-7
Operating temperature (°C) -55 to +250
Keywords
Keywords
Cyanoacrylate High-temperature resistant low viscosity Steel Allyl Cyanoacrylate MIL-A-46050C Type II Class 1 Industrial adhesive Superglue Metal adhesive PERMABOND 919 High-temperature adhesive Electronic bonding

Documents and datasheets

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