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PERMABOND A126

PERMABOND A126

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Permabond A126 — anaerobic adhesive, viscosity 10-30 mPa·s.

High-strength wicking adhesive — flows into threads and coaxial connections via capillary action.

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  • Viscosity (adhesives)
  • Viscosity mPa·s
  • fluorescence
  • Maximum gap width (mm)
  • Handling strength (M10 steel)@23°C
  • Functional strength (M10 steel) @ 23°C
  • Final strength (M10 steel) @ 23°C
  • Shear strength (steel ISO10123)
  • coefficient of thermal expansion
  • Dielectric strength
  • Thermal conductivity
  • Storage temperature (°C)
  • Operating temperature (°C)

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WRAS shaft-hub PERMABOND

 
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: 49-217.FL

HS code: 3506.9190000

Internal reference: 49-217.FL
HS code: 3506.9190000

PERMABOND A126
PERMABOND A126
Permabond · Permabond Engineering Adhesives Ltd · SKU 49-217.FL

Permabond A126 is a high-strength anaerobic wicking adhesive for the permanent bonding and sealing of threaded parts and coaxial connections — the ultra-low viscosity allows bonding in tight tolerance fits without disassembly.

With a flow rate of 10–30 mPa·s, A126 is highly mobile and flows through capillary action into micro-gaps down to 0.05 mm — both between internal and external threads and into coaxial fits such as shaft-hub connections or bearing seats. Curing takes place in the absence of air and in contact with the metal.

The universal wicking application makes A126 the first choice for post-assembly bonding of already mounted components — securing vibration-loose screws, fixing loose bearing fits, or making repairs without complete disassembly. The breakaway torque of 14 N·m and the high holding torque of 34 N·m provide a permanently high-strength bond.

SPECIAL FEATURE

Universal wicking adhesive for the permanent bonding and sealing of threaded parts and coaxial connections — the ultra-low viscosity of 10–30 mPa·s allows for the subsequent securing of already assembled components by capillary penetration into micro-gaps.

Permabond A126 in figures
10–30
mPa·s Wicking
Universal
Thread + shaft-hub
14 N·m
Breakaway torque
penetration
capillary-capable

What distinguishes Permabond A126

Wicking for thread + shaft-hub
Universal application — penetrates both screw threads and coaxial fits.
Ultra-low viscosity
10–30 mPa·s — migrates into micro-gap, completely penetrates adhesive gaps.
High-strength bond
14 N·m breakaway resistance, 34 N·m further resistance — strong vibration resistance.
Fast curing
Handling strength after 15 minutes.
Tight tolerances
0.05 mm gap filling — micro gaps and precision threads.
Subsequent application possible
Secure already assembled components without disassembly.

What is Permabond A126 used for?

Retrofitted screw locking
Secure screws that are already installed without loosening them.
Shaft-hub fits
Secure coaxial connections with wicking penetration.
Repair without disassembly
Secure vibration-loosened components in the field.
Precision mechanics
Tightly toleranced threads and fits with a 0.05 mm gap width.
Bearing and bushing bonding
Subsequent fixing of loose fits.

processing

1
Clean surfaces
Bonding surfaces must be clean, dry, and free of grease. Degrease with Permabond Cleaner A or a solvent (acetone, isopropanol). Rough surfaces (~25 µm) result in higher bond strength than polished surfaces.
2
Apply adhesive
Apply Permabond A126 directly from the bottle — for through holes, apply a stripe along the thread length; for blind holes, apply a few drops to the bottom. Do not touch the tip to metal surfaces (this will cause premature hardening in the bottle).
3
assembling components
Insert the screws and tighten them to the required torque. For shaft-hub fits, assemble the components before the adhesive begins to cure.
4
Allow to harden
Anaerobic curing begins in the absence of air and in contact with metal. Handling strength is typically achieved after 15 minutes, functional strength after 1 hour, and full strength after 24 hours at 23 °C.
5
Accelerate curing (optional)
Permabond A905 activator can be used on inactive surfaces (stainless steel, zinc, aluminum) or at low temperatures — applied to one adhesive surface, allowed to evaporate, then adhesive applied to the other side.
Data sheets & safety data sheet
Full TDS and SDS in DE, EN, FR — view or download directly.
To the documents →

Recommended accessories

Permabond A905 Activator
Accelerates anaerobic curing on inactive surfaces such as stainless steel, zinc or aluminum and improves gap curing.
View product →
Permabond A 905 Spray
Aerosol version of the A905 activator — convenient application in inaccessible places or large areas.
View product →
Permabond Cleaner A Aerosol
Spray cleaner for quick degreasing and preparation of the bonding surfaces before applying the anaerobic adhesive.
View product →
Permabond A118 High Strength Universal
High-strength all-round bonding — the universal choice for demanding screw, bearing and shaft-hub connections.
View product →

Important instructions

Not suitable for / Important notes
After application, wait several minutes until wicking penetration is complete before subjecting the component to stress. Not for use in contact with oxygen or vapor. Some thermoplastics may be affected.
storage
Store at 5 to 25 °C. Anaerobic adhesives lose their reactivity upon contact with metal — do not touch the tip of the bottle to metal surfaces, do not pour the adhesive back into the bottle.

Which Permabond anaerobic adhesive is suitable for which application?

Permabond A126 in direct comparison with related products of the A series.

Permabond A126
Current product		Permabond A113 →Permabond A1062 →Permabond HM162 →
Application / StrengthHigh-strength wicking adhesive for threads and coaxial connectionsApply before assemblyWith UV secondary curingHigher viscosity, before assembly
viscosity10-30 mPa·s500 mPa·s10–20 mPa·s1,000 mPa·s
Maximum gap filling.0.05 mm0.12 mm0.05 mm0.2 mm
Breakaway torque14 N·m12 N·m—32 N·m
Further torque34 N·m7 N·m—57 N·m
Topics & Application Areas
Key terms related to this product. Also useful for our search and filters.
WRAS shaft-hub PERMABOND

Technical data for PERMABOND A126

All 19 product information 4 Performance at final strength 3 Physical properties 5 Curing values ​​4 Thermal properties 3
Product information
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Container 10 ml, 50 ml, 200 ml, 2 l
Country of origin Italy
Performance at final strength
Shear strength (steel ISO10123) 10-20 MPa
Dielectric strength 11 kV/mm
Thermal conductivity 0.19 W/(mK)
Physical properties
Color green
Chemical group Acrylic Unicomponent
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 10-30
fluorescence Yes
Curing values
Maximum gap width (mm) 0.05
Handling strength (M10 steel)@23°C 15 minutes
Functional strength (M10 steel) @ 23°C 1 hour
Final strength (M10 steel) @ 23°C 24 hours
Thermal properties
coefficient of thermal expansion 90 x 10-6 mm/mm/°C
Storage temperature (°C) 5-25
Operating temperature (°C) -55 to 150

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) 4
Permabond A126 - Technical Data Sheet DE.pdf
377 KB
Permabond A126 - Technical Data Sheet DE.pdf
377 KB
Permabond A126 - Technical Data Sheet EN.pdf
367 KB
Permabond A126 - Fiche Technique FR.pdf
332 KB
Safety Data Sheets (SDS) 3
Permabond A126 - Safety Data Sheet DE.pdf
348 KB
Permabond A126 - Safety Data Sheet EN.pdf
345 KB
Permabond A126 - Fiche de Sécurité FR.pdf
347 KB

Frequently asked questions about Permabond A126

Practical application and design questions — answered by SILITECH.

Permabond A126 is a single-component, anaerobic acrylic adhesive with a viscosity of 10–30 mPa·s and a gap-filling capacity of up to 0.05 mm. This high-strength wicking adhesive is suitable for threaded and coaxial connections and flows into micro-gaps via capillary action. Anaerobic adhesives cure in the absence of air and in contact with metal, making them ideal for tight-tolerance metallic joints.

Anaerobic adhesives like Permabond A126 remain liquid in the bottle (due to contact with air and oxygen) and only begin to harden after bonding under anaerobic conditions and metal-to-metal contact. Curing starts at the metal surface and progresses into the bond gap. The product cures quickly on steel and copper; on stainless steel and zinc, the Permabond A905 activator may be beneficial.

Difficult to remove — Permabond A126 is high-strength (14 N·m breakaway torque). Disassembly typically requires heating the bond to 200 °C or more. Designed for permanent bonding.

Permabond A126 does not have specific industry approvals such as WRAS or KTW (drinking water). For general industrial applications, the product is approved according to Permabond's internal specifications; however, product-specific testing prior to series production is recommended.

Permabond A126 typically achieves handling strength after 15 minutes and functional strength after 1 hour at 23 °C on M10 steel. Final strength is reached after 24 hours. On inactive surfaces (stainless steel, zinc) or at low temperatures, the curing time is extended—Permabond A905 activator accelerates the process.

Permabond A126 is a high-strength wicking adhesive for threads and coaxial joints (10–30 mPa·s viscosity, 0.05 mm gap filling, 14 N·m breakaway torque). Permabond A113 is a medium-strength threadlocker (500 mPa·s, 0.12 mm gap filling, 12 N·m breakaway torque) — apply before assembly. Both belong to the anaerobic Permabond A series.

The choice depends on the application: Permabond A126 (high-strength wicking adhesive for threads and coaxial connections); Permabond A113 (medium threadlocker); Permabond A1062 (wicking + UV shaft-hub); Permabond HM162 (wicking shaft-hub). For inactive surfaces (stainless steel, zinc, aluminum) Permabond A905 activator be used to accelerate curing.

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Product specifications

Product information
Container 10 ml or 50 ml or 200 ml or 2 l
Manufacturer Permabond Engineering Adhesives Ltd
brand Permabond
Country of origin Italy
Performance at final strength
Shear strength (steel ISO10123) 10-20 MPa
Dielectric strength 11 kV/mm
Thermal conductivity 0.19 W/(mK)
Physical properties
Color green
Chemical group Acrylic Unicomponent
Viscosity (adhesives) Low viscosity <500 MPas
Viscosity mPa·s 10-30
fluorescence Yes
Curing values
Maximum gap width (mm) 0.05
Handling strength (M10 steel)@23°C 15 minutes
Functional strength (M10 steel) @ 23°C 1 hour
Final strength (M10 steel) @ 23°C 24 hours
Thermal properties
coefficient of thermal expansion 90 x 10-6 mm/mm/°C
Storage temperature (°C) 5-25
Operating temperature (°C) -55 to 150
Keywords
Keywords
WRAS shaft-hub PERMABOND

Documents and datasheets

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