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PERMABOND 920

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Permabond 920 — anaerobic adhesive, viscosity 70-90 mPa·s, Shore D 85.

Usable up to 250 °C (with Post-Cure) and biocompatible — MIL-A-46050C Type V Class 2 approved.

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  • Color
  • Country of origin
  • 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
  • PVC
  • PC
  • phenol
  • Storage temperature (°C)
  • Hardness (Shore D)
  • Final strength
  • Operating temperature (°C)
  • Impact resistance (astm D-950)

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Low viscosity, high temperature resistance , steel , allyl cyanoacrylate, ISO 10993 cytotoxicity tested for medical devices, MIL-A-46050C Type V Class 2 cyanoacrylate adhesive, plastic adhesive , metal adhesive, rubber adhesive, high-temperature , PERMABOND 920 baked enamel adhesive

 
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: 49-920.FL

HS code: 3506.9190000

Internal reference: 49-920.FL
HS code: 3506.9190000

PERMABOND 920
PERMABOND 920
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-920.FL

Permabond 920 is the medium viscosity allyl cyanoacrylate variant of the 919/920/922 series — a standard gap filler with the characteristic post-cure high temperature resistance up to 250 °C, additionally biocompatible and MIL-A-46050C Type V Class 2 approved.

With a viscosity of 80 mPa·s, 920 is medium-viscosity—the standard range for cyanoacrylates—and fills gaps up to 0.15 mm. Its handling strength is 15–20 seconds on steel. On phenolic resin, 920 achieves a remarkable 14 N/mm², which distinguishes the allyl chemistry as a high-tech variant.

Like 919, 920 utilizes a two-stage curing process: After 4 hours of room-temperature bonding, the bond is post-cured for 2 hours at 150 °C — after which it is permanently load-bearing up to 250 °C. In addition to MIL-A-46050C Type V Class 2 approval, 920 is cytotoxicity-tested and therefore qualified for high-temperature applications in medical and hygiene-related environments.

AUTHORIZATION & SPECIAL PROPERTIES

MIL-A-46050C Type V Class 2 + biocompatible (cytotoxicity tested). With two-stage post-cure curing (4 h RT + 2 h at 150 °C), it is permanently resistant up to 250 °C — the medium viscosity variant in the unique allyl cyanoacrylate series.

Permabond 920 in figures
80
mPa·s viscosity
19–23
N/mm² steel
250 °C
With Post-Cure
MIL+Bio
V Class 2

What makes Permabond 920 stand out

Medium viscosity standard geometry
80 mPa·s and 0.15 mm gap filling — standard adhesive gap without pre-treatment.
Post-cure at 250 °C
Two-stage curing (4 h RT + 2 h 150 °C) — permanently load-bearing up to 250 °C.
MIL-A-46050C Type V Class 2
High-temperature classification of the most important cyanoacrylate specification.
Biocompatible
Cytotoxicity tested — qualified for medical and hygiene-related applications.
Substrate failure in ABS, PVC, PC
The bond is stronger than the plastic substrate — if it breaks, the component tears.
Very good phenol strength
14 N/mm² shear strength on phenolic resin — important for electronics.

What is Permabond 920 used for?

Medical and hygiene-related high-temperature adhesives
Cytotoxicity tested + suitable for temperatures up to 250 °C — an unusual combination.
Aviation and defense technology
MIL-A-46050C Type V Class 2 approved — for demanding industry applications.
Components subject to continuous thermal stress
Engine, heating appliance and industrial furnace components — with post-cure up to 250 °C.
Electronics and switchgear manufacturing
Phenolic resin bonding with a shear strength of 14 N/mm².
Standard gap width with heat requirement
When standard geometry and high-temperature suitability come together.

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 920 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, 920 behaves like a standard cyanoacrylate. Passing the cytotoxicity test does not replace full medical device certification. Permabond POP primer is mandatory for 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 920 in direct comparison with related cyanoacrylate products.

Permabond 920
Current product		Permabond 919 →Permabond 922 →Permabond 820 →
ChemistryAllyl cyanoacrylateAllyl-CAAllyl-CAEthyl-CA
viscosity80 mPa·s2–6 mPa·s1,200–2,000 mPa·s100 mPa·s
Maximum gap filling.0.15 mm0.05 mm0.4 mm0.15 mm
Firmly on steel15–20 s<20 s<20 s10–15 s
Shear strength steel19–23 N/mm²20–22 N/mm²19–23 N/mm²19–23 N/mm²
Strength / Recommended forWith post-cure
250 °C		Ultra-low, MIL Class 1, WickingPaste, MIL Class 3, 0.4 mm gapHigh temperature + biocompatible, without post-cure
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Low viscosity, high temperature resistance , steel , allyl cyanoacrylate, ISO 10993 cytotoxicity tested for medical devices, MIL-A-46050C Type V Class 2 cyanoacrylate adhesive, plastic adhesive , metal adhesive, rubber adhesive, high-temperature , PERMABOND 920 baked enamel adhesive

Technical data for PERMABOND 920

All 23 product information 4 Performance at final strength 1 Physical properties 4 Curing values ​​5 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, 500 g
Country of origin Italy
Performance at final strength
Impact resistance (astm D-950) 3-5 kJ/m²
Physical properties
Color colorless
Chemical group Allyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 70-90
Curing values
Maximum gap width (mm) 0.15
Steel hand strength (sec.) 15-20
Rubber's hand strength (sec.) 10-15
Hand strength of phenol (seconds) 10-15
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 23-29
aluminum 8-9
ABS >6
PVC >6
PC >5
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 920 - Technical Data Sheet DE.pdf
333 KB
Permabond 920 - Technical Data Sheet EN.pdf
390 KB
Permabond 920 - Fiche Technique FR.pdf
349 KB
Safety Data Sheets (SDS) 3
Permabond 920 - Safety Data Sheet DE.pdf
311 KB
Permabond 920 - Safety Data Sheet EN.pdf
306 KB
Permabond 920 - Fiche de Sécurité FR.pdf
310 KB

Frequently asked questions about Permabond 920

Practical application and design questions — answered by SILITECH.

Permabond 920 is an allyl cyanoacrylate superglue with a viscosity of 80 mPa·s and a maximum gap filling of 0.15 mm. Medium viscosity allyl cyanoacrylate — MIL Class 2, biocompatible, with post-cure up to 250 °C.

Permabond 920 reliably bonds steel (19–23 N/mm²), aluminum (8–9 N/mm²), ABS (>6 N/mm² (substrate failure)), PVC (>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.

Permabond 920 is approved according to MIL-A-46050C Type V Class 2 (existing designs), cytotoxicity testing passed — qualified for demanding industrial applications.

Permabond 920 reaches handling strength on steel in 15–20 seconds. Other typical curing times are 10–15 seconds (Buna N) and 10–15 seconds (phenol). The final strength of 19–23 N/mm² (steel) is reached after 24 hours. Temperature, humidity, and substrate affect the curing rate.

Permabond 920 offers 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. Permabond 919 has 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 (ultra-low viscosity, MIL Class 1, Wicking). Both utilize an allyl cyanoacrylate base (or a related cyanoacrylate variant).

Permabond 920 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 920 (80 mPa·s, 0.15 mm gap width, with post-cure); Permabond 919 (2–6 mPa·s, 0.05 mm, ultra-low viscosity, MIL Class 1, wicking); Permabond 922 (1,200–2,000 mPa·s, 0.4 mm, paste, MIL Class 3, 0.4 mm gap); Permabond 820 (100 mPa·s, 0.15 mm, high temperature + biocompatible, 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
Impact resistance (astm D-950) 3-5 kJ/m²
Physical properties
Color colorless
Chemical group Allyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 70-90
Curing values
Maximum gap width (mm) 0.15
Steel hand strength (sec.) 15-20
Rubber's hand strength (sec.) 10-15
Hand strength of phenol (seconds) 10-15
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 23-29
aluminum 8-9
ABS >6
PVC >6
PC >5
phenol 14
Thermal properties
Storage temperature (°C) 2-7
Operating temperature (°C) -55 to +250
Keywords
Keywords
Low viscosity, high temperature resistance , steel , allyl cyanoacrylate, ISO 10993 cytotoxicity tested for medical devices, MIL-A-46050C Type V Class 2 cyanoacrylate adhesive, plastic adhesive , metal adhesive, rubber adhesive, high-temperature , PERMABOND 920 baked enamel adhesive

Documents and datasheets

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