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PERMABOND 737MM

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Black superglue paste, gap filler 0.5 mm

Black adhesive paste with 0.5 mm gap filling — remains stationary even in vertical bonding applications.

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  • Chemical group
  • Viscosity (adhesives)
  • Viscosity mPa·s
  • Maximum gap width (mm)
  • Steel hand strength (sec.)
  • Handling strength of aluminum (sec.)
  • Rubber's hand strength (sec.)
  • Hand strength of phenol (seconds)
  • Steel
  • aluminum
  • PVC
  • PC
  • Operating temperature (°C)
  • Hardness (Shore D)
  • Storage temperature (°C)
  • Final strength
  • Impact resistance (astm D-950)
  • Dielectric strength
  • Tensile strength

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Superglue , cyanoacrylate adhesive, plastic adhesive , metal adhesive, black adhesive , elasticized adhesive, impact-resistant adhesive , PERMABOND 737 , gap filler adhesive , high-strength bonding , peel-resistant 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: 49-246.FL

HS code: 3506.9190000

Internal reference: 49-246.FL
HS code: 3506.9190000

PERMABOND 737MM
PERMABOND 737MM
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-246.FL

Permabond 737MM is a black pigmented, high-viscosity cyanoacrylate paste — designed for bonding gaps up to 0.5 mm, vertical applications and impact/peel-loaded joints where liquid superglues would fail.

With a viscosity of 2,000 to 4,000 mPa·s, 737MM is a true adhesive paste—it doesn't run, stays precisely where it's applied, and reliably fills gaps up to 0.5 mm. This property makes 737MM the first choice for applications with large tolerances, vertical adhesive joints, or overhead applications.

The toughened chemistry provides impact resistance of 5–10 kJ/m² and peel strength of 40–60 N/25 mm—values ​​that a conventional cyanoacrylate adhesive product cannot achieve. On steel, it achieves a shear strength of 19–23 N/mm² and a tensile strength (ISO 6922) of 25 N/mm². The black pigmentation makes 737MM visually unobtrusive on dark substrates.

SPECIAL FEATURE

Highly viscous, black pigmented paste with 0.5 mm gap filling capacity — fills gaps too large for standard cyanoacrylates and remains firmly in place even in vertical bonding applications due to its toughness. Elastically toughened for impact and peel stress.

Permabond 737MM in figures
2'000–4'000
mPa·s viscosity
0,5
mm gap filling
25
N/mm² tensile strength
Black
Pigmented

What distinguishes Permabond 737MM

0.5 mm gap filling
Six times more than a standard CA — fills rough tolerances without pre-machining.
High-viscosity paste
2,000–4,000 mPa·s — does not leak, stationary in vertical and overhead bonding applications.
Toughened
Impact resistance 5–10 kJ/m² and peel resistance 40–60 N/25 mm — impact and peel resistant.
black pigmented
Visually inconspicuous on dark surfaces, rubber components and black plastics.
Substrate failure in ABS, PVC, PC
For ABS, the bond strength starts at 8 N/mm² — stronger than the plastic substrate itself.
Increased thermal conductivity
0.2 W/(m·K) — twice as high as most cyanoacrylates.

What is Permabond 737MM used for?

Vertical adhesive seams
Adhesive paste does not run — safe application to lateral or upright adhesive surfaces.
Coarse tolerances / gap filling up to 0.5 mm
When component pairings do not exhibit a standard CA-typical microgap dimension.
Bonds subjected to shock and vibration
Mechanical and vehicle engineering with dynamic loads.
Visible adhesive bonds on dark surfaces
Black pigmentation makes adhesive seams disappear in rubber or plastic components.
Repair and maintenance operations
Paste consistency allows for selective application and controlled gap filling.

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 737MM 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
Shake the bottle briefly before use. 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 737MM in direct comparison with related cyanoacrylate products.

Permabond 737MM
Current product		Permabond 731 Clear →Permabond 735 →Permabond 792 →
ChemistryEthyl cyanoacrylate (toughened)Ethyl-CA (tough-elastic)Ethyl-CA (tough-elastic)Ethyl-CA
viscosity2,000–4,000 mPa·s (paste)150 mPa·s100–200 mPa·s60–125 mPa·s
Maximum gap filling.0.5 mm0.15 mm0.15 mm0.15 mm
Firmly on steel15–20 s<30 s30–50 s2–3 s
Shear strength steel19-23 N/mm²24–30 N/mm²24–30 N/mm²18–22 N/mm²
Strength / Recommended forGap filling
0.5 mm		Low viscosity, colorlessMedium viscosity, blackStandard colorless
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
Superglue , cyanoacrylate adhesive, plastic adhesive , metal adhesive, black adhesive , elasticized adhesive, impact-resistant adhesive , PERMABOND 737 , gap filler adhesive , high-strength bonding , peel-resistant adhesive

Technical specifications for PERMABOND 737MM

All 24 product information 5 Performance at final strength 2 Physical properties 4 Curing values ​​6 Mechanical properties 1 Shear strength ISO 4587 in N/mm² 4 Thermal properties 2
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 20 g, 50 g, 500 g
Country of origin Italy
Tensile strength 25 N/mm²
Performance at final strength
Impact resistance (astm D-950) 5-10 kJ/m²
Dielectric strength 25 kV/mm
Physical properties
Color black
Chemical group Ethyl cyanoacrylate
Viscosity (adhesives) Medium viscosity 500 - 5000 mPas
Viscosity mPa·s 2000-4000
Curing values
Maximum gap width (mm) 0.5
Steel hand strength (sec.) 15-20
Handling strength of aluminum (sec.) 30-35
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 19-23
aluminum 13-15
PVC >6
PC >5
Thermal properties
Operating temperature (°C) -55 to +120
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 737MM - Technical Data Sheet DE.pdf
335 KB
Permabond 737MM - Technical Data Sheet EN.pdf
376 KB
Permabond 737MM - Technical Data Sheet FR.pdf
335 KB
Safety Data Sheets (SDS) 3
Permabond 737MM - Safety Data Sheet DE.pdf
332 KB
Permabond 737MM - Safety Data Sheet EN.pdf
310 KB
Permabond 737MM - Fiche de Sécurité FR.pdf
331 KB

Frequently asked questions about Permabond 737MM

Practical application and design questions — answered by SILITECH.

Permabond 737MM is an ethyl cyanoacrylate (toughened) instant adhesive with a viscosity of 2,000–4,000 mPa·s (paste) and a maximum gap filling capacity of 0.5 mm. Black, high-viscosity CA paste — fills gaps up to 0.5 mm, toughened.

Permabond 737MM reliably bonds steel (19–23 N/mm²), aluminum (13–15 N/mm²), ABS (>8 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.

Highly viscous, black pigmented paste with 0.5 mm gap filling capacity — fills gaps too large for standard cyanoacrylates and remains firmly in place even in vertical bonding applications due to its toughness. Elastically toughened for impact and peel stress.

Permabond 737MM reaches handling strength on steel in 15–20 s. Other typical curing times: 30–35 s (aluminum), 10–15 s (Buna N), 5–10 s (phenol). The final strength of 19–23 N/mm² (steel) is reached after 24 hours. Temperature, humidity, and substrate affect the curing rate.

Permabond 737MM offers a viscosity of 2,000–4,000 mPa·s (paste), 0.5 mm gap filling, and 19–23 N/mm² shear strength on steel. Permabond 731 Clear has a viscosity of 150 mPa·s, 0.15 mm gap filling, and 24–30 N/mm² shear strength on steel (low viscosity, colorless). Both utilize an ethyl cyanoacrylate (toughened) base (or a related cyanoacrylate variant).

Permabond 737MM 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 737MM (2,000–4,000 mPa·s (paste), 0.5 mm gap width, gap filling); Permabond 731 Clear (150 mPa·s, 0.15 mm, low viscosity, colorless); Permabond 735 (100–200 mPa·s, 0.15 mm, medium viscosity, black); Permabond 792 (60–125 mPa·s, 0.15 mm, standard colorless). 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 or 500 g
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Country of origin Italy
Tensile strength 25 N/mm²
Performance at final strength
Impact resistance (astm D-950) 5-10 kJ/m²
Dielectric strength 25 kV/mm
Physical properties
Color black
Chemical group Ethyl cyanoacrylate
Viscosity (adhesives) Medium viscosity 500 - 5000 mPas
Viscosity mPa·s 2000-4000
Curing values
Maximum gap width (mm) 0.5
Steel hand strength (sec.) 15-20
Handling strength of aluminum (sec.) 30-35
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 19-23
aluminum 13-15
PVC >6
PC >5
Thermal properties
Operating temperature (°C) -55 to +120
Storage temperature (°C) 2-7
Keywords
Keywords
Superglue , cyanoacrylate adhesive, plastic adhesive , metal adhesive, black adhesive , elasticized adhesive, impact-resistant adhesive , PERMABOND 737 , gap filler adhesive , high-strength bonding , peel-resistant adhesive

Documents and datasheets

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