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PERMABOND 825

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Permabond 825 — Cyanoacrylate instant adhesive, viscosity 100-150 mPa·s, Shore D 85.

Durable up to 180 °C — even bonds HDPE and LDPE directly, without polyolefin primer.

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  • Viscosity (adhesives)
  • Viscosity mPa·s
  • Maximum gap width (mm)
  • Steel hand strength (sec.)
  • Rubber's hand strength (sec.)
  • Hand strength of phenol (seconds)
  • Steel
  • Operating temperature (°C)
  • Hardness (Shore D)
  • Storage temperature (°C)
  • Final strength
  • UFI (Unique Formula Identifier)

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Ethyl cyanoacrylate , low viscosity, solvent-free, industrial adhesive, instant adhesive, fast-drying adhesive , plastic adhesive, metal adhesive, rubber adhesive , PERMABOND 825 high-temperature 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: 49-825.FL.G020

HS code: 3506.9190000

Internal reference: 49-825.FL.G020
HS code: 3506.9190000

PERMABOND 825
PERMABOND 825
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-825.FL.G020

Permabond 825 is the premium high-temperature cyanoacrylate adhesive of the 800 series — designed for continuous use at up to 180 °C and can also be bonded to HDPE and LDPE without the need for a polyolefin primer.

With a viscosity of 100–150 mPa·s, 825 is medium-viscosity. What distinguishes 825 from the other high-temperature variants is its excellent resistance to thermal aging: After 1,000 hours at 180 °C, approximately 75% of the initial strength is retained — values ​​that 801 / 802 / 820 do not achieve.

On steel, 825 delivers a shear strength of 15–20 N/mm², and on stainless steel up to 22 N/mm². Curing times are particularly short on NBR and phenolic resins at 5–10 seconds. Unusually for a cyanoacrylate, 825 also bonds HDPE (10–20 seconds handling strength) and LDPE (40–60 seconds) without a polyolefin primer—albeit with reduced strength compared to standard substrates.

SPECIAL FEATURE

Highest heat resistance of the Permabond Standard CA series — after 1,000 hours of thermal aging at 180 °C, approximately 75% of the initial strength remains. Additionally, it can be bonded to HDPE and LDPE — a rare property for cyanoacrylates.

Permabond 825 in numbers
100–150
mPa·s viscosity
180 °C
Thermal aging
75 %
Residual strength after 1,000 hours
HDPE
addable

What distinguishes Permabond 825

180 °C continuous temperature
Thermal aging for 1,000 h at 180 °C: ~75% residual strength — the highest heat resistance in the standard CA series.
HDPE and LDPE can be bonded
Can be applied without POP primer — a rare property in cyanoacrylate adhesives.
Substrate failure in many plastics
ABS, PVC, PC and acrylic: Bond stronger than the substrate itself.
Fast curing on rubber and phenol
5–10 seconds — suitable for line production.
Stainless steel peak value
Shear strength of 18–22 N/mm² on stainless steel — significantly higher than on aluminum.
Standard gap width
0.15 mm — Standard geometries without pre-machining.

What is Permabond 825 used for?

Continuous high-temperature operation
Components subjected to long-term thermal stress at temperatures up to 180 °C.
Bonding to HDPE and LDPE
Can be applied without polyolefin primer — standard polyethylenes can be bonded directly.
Stainless steel bonding
Shear strength up to 22 N/mm² on stainless steel — suitable for apparatus and food technology.
Acrylic and plastic bonding
Substrate failure in acrylic, PC, ABS and PVC — bond stronger than the component.
Special adhesive bonds with combined requirements
When heat, polyethylene suitability and rapid curing 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 825 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. Direct bonding to HDPE/LDPE is a special feature; for PP, PTFE, and silicone, Permabond POP primer is still required.
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 825 in direct comparison with related cyanoacrylate products.

Permabond 825
Current product		Permabond 801 →Permabond 802 →Permabond 820 →
ChemistryEthyl cyanoacrylateEthyl-CAEthyl-CAEthyl-CA
viscosity100-150 mPa·s10–15 mPa·s90–110 mPa·s100 mPa·s
Maximum gap filling.0.15 mm0.05 mm0.15 mm0.15 mm
Firmly on steel10–20 s10–15 s10–15 s10–15 s
Shear strength steel15-20 N/mm²19–23 N/mm²19–23 N/mm²19–23 N/mm²
Strength / Recommended forThermally aging resistant
up to 180 °C		Ultra-low, WickingMedium viscosity, standardHigh temperature + biocompatible
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Ethyl cyanoacrylate , low viscosity, solvent-free, industrial adhesive, instant adhesive, fast-drying adhesive , plastic adhesive, metal adhesive, rubber adhesive , PERMABOND 825 high-temperature adhesive

Technical data for PERMABOND 825

All 18 product information 5 Physical properties 4 Curing values ​​5 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 1 Thermal properties 2
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 20 g
Country of origin Italy
UFI (Unique Formula Identifier) J521-90W4-Y00E-0R3U
Physical properties
Color colorless
Chemical group Ethyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 100-150
Curing values
Maximum gap width (mm) 0.15
Steel hand strength (sec.) 10-20
Rubber's hand strength (sec.) 10-15
Hand strength of phenol (seconds) 5-10
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 15-20
Thermal properties
Operating temperature (°C) -40 to 200
Storage temperature (°C) 2-7

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 825 - Technical Data Sheet DE.pdf
335 KB
Permabond 825 - Technical Data Sheet EN.pdf
375 KB
Permabond 825 - Fiche Technique FR.pdf
338 KB
Safety Data Sheets (SDS) 3
Permabond 825 - Safety Data Sheet DE.pdf
395 KB
Permabond 825 - Safety Data Sheet EN.pdf
390 KB
Permabond 825 - Fiche de Sécurité FR.pdf
394 KB

Frequently asked questions about Permabond 825

Practical application and design questions — answered by SILITECH.

Permabond 825 is an ethyl cyanoacrylate instant adhesive with a viscosity of 100–150 mPa·s and a maximum gap filling capacity of 0.15 mm. Premium high-temperature cyanoacrylate adhesive up to 180 °C — also suitable for HDPE and LDPE.

Permabond 825 reliably bonds steel (15–20 N/mm²), aluminum (12–16 N/mm²), ABS (>6 N/mm² (substrate failure)), PVC (>5 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.

Highest heat resistance of the Permabond Standard CA series — after 1,000 hours of thermal aging at 180 °C, approximately 75% of the initial strength remains. Additionally, it can be bonded to HDPE and LDPE — a rare property for cyanoacrylates.

Permabond 825 reaches handling strength on steel in 10–20 s. Other typical curing times: 5–10 s (NBR), 5–10 s (phenol), 10–20 s (HDPE), 40–60 s (LDPE). The final strength of 15–20 N/mm² (steel) is reached after 24 hours. Temperature, humidity, and substrate affect the curing rate.

Permabond 825 offers a viscosity of 100–150 mPa·s, a gap filling capacity of 0.15 mm, and a shear strength of 15–20 N/mm² on steel. Permabond 801 has a viscosity of 10–15 mPa·s, a gap filling capacity of 0.05 mm, and a shear strength of 19–23 N/mm² on steel (ultra-low wicking). Both utilize an ethyl cyanoacrylate base (or a related cyanoacrylate variant).

Permabond 825 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 825 (100–150 mPa·s, 0.15 mm gap width, thermally aging resistant); Permabond 801 (10–15 mPa·s, 0.05 mm, ultra-low viscosity, wicking); Permabond 802 (90–110 mPa·s, 0.15 mm, medium viscosity, standard); Permabond 820 (100 mPa·s, 0.15 mm, high temperature + biocompatible). For polypropylene, polyethylene, PTFE, and silicone, pretreatment with Permabond Polyolefin Primer (POP) is always required.

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Product specifications

Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 20 g
Country of origin Italy
UFI (Unique Formula Identifier) J521-90W4-Y00E-0R3U
Physical properties
Color colorless
Chemical group Ethyl cyanoacrylate
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 100-150
Curing values
Maximum gap width (mm) 0.15
Steel hand strength (sec.) 10-20
Rubber's hand strength (sec.) 10-15
Hand strength of phenol (seconds) 5-10
Final strength 24 hours
Mechanical properties
Hardness (Shore D) 85
Shear strength ISO 4587 in N/mm²
Steel 15-20
Thermal properties
Operating temperature (°C) -40 to 200
Storage temperature (°C) 2-7
Keywords
Keywords
Ethyl cyanoacrylate , low viscosity, solvent-free, industrial adhesive, instant adhesive, fast-drying adhesive , plastic adhesive, metal adhesive, rubber adhesive , PERMABOND 825 high-temperature adhesive

Documents and datasheets

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