Weiconlock AN 306-20 Adhesive for Cylindrical Assemblies - 50ml Pen

Permanent Locking for Water, Gas & Oxygen Applications.

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50ml Pens of this high strength adhesive designed for permanent bonding and sealing of bearing housings, bushes, splines and close fitting metal parts. Approved for gas, potable water and oxygen sealing and withstands temperatures up to 200°C.

Browse our range of AN 306-20 Sizes.
Browse our range of Weiconlock AN 306-20 Sizes.
Bearing, Shaft and Housing Adhesive Range Link
Browse our full Weiconlock Cylindrical Assembly Adhesives Range.
  • Higher Viscosity for Larger Parts or Vertical Surfaces.
  • High Strength for Hard to Disassemble, Permanent Bonds.
  • DIN WVGW Approved for Gas.
  • WRAS & German Hygiene Institut Approved for Potable Water.
  • BAM Approved for Oxygen Service.

Weiconlock AN 306-20 Cylindrical Assembly Adhesive is a high strength, high viscosity grade designed for locking bearings, gear wheels, shafts and bolts into place permanently..

This grade of anaerobic adhesive is manufactured in Germany by Weicon and offers a variety of benefits. These are expanded on in the sections below:

WRAS & Hygiene Institut Approved for Potable Water.

Our Weiconlock AN 306-20 has been tested and approved by both the Hygiene-Institut des Ruhrgebiets and WRAS. This allows it to be used for bonding in drinking water applications.

DIN / DVGW Approved for Gas & BAM Approved for Oxygen Service.

Weiconlock AN 306-20 has been BAM tested and safety-related evaluated- according to leaflet M 031-1 “List of nonmetallic materials compatible with oxygen” (DGUV information 213-078) of BG RCI.

This quality adhesive has also been tested in accordance with DIN DVGW and approved for use with gas.

High Temperature Resistance.

Our Weiconlock AN 306-20 is a high temperature grade of anerobic adhesive. This glue will withstand continuous exposure to temperatures between -60°C and +200°C.

High Strength, Hard to Disassemble Joins.

Weiconlock AN 306-20 cures with high strength for permanent bonds and seals. Strength ratings are summarised further below.

Specialised tools or the application for heat (300°C) will be required to disassemble joins made with Weiconlock AN 306-38.

Medium Viscosity.

Weiconlock AN 306-20 has a viscosity of 3.000 - 6.000 nt mPa·s (according to Brookfield at 25°C). We classify this as a high viscosity which means it is more suitable for larger diameter connections and vertically aligned parts.

Weiconlock AN 306-20 is able to cover gaps up to 0.2mm and is used on threaded joints up to M 56 (R2").


Weiconlock AN 306-20 is a non-marking grade of threadlocking adhesive.

Weiconlock AN 306-20 Key Specs Overview.

Colour Green
Viscosity 3.000 - 6.000 nt mPa·s
Maximum Gap Bridging 0.2mm
Prevailing stregth 40 - 55 Nm
Handling Strength at Room Temperature 20 - 40 Minutes
Temperature Resistance -60°C to +200°C.

For more detailed information on this high-quality adhesive, please consult the specifications tab or the Technical Data Sheet via the Media Tab.

The Weiconlock Pen System.

One of the features of all Weiconlock Threadlockers, Flange Sealants, Retaining Adhesives and Pipe Sealers is the pen system they use for most size containers (300ml varieties are supplied in cartridges and are the one exception).

This special pen makes accurate application natural and easy. It also helps to reduce wastage as there’s less chance of spillage.

The Weicon Pen System has been used in all kinds of industries all over the world for decades and continues to be a key point of difference for these German-Made adhesives.

Common Features of All Weiconlock Anaerobic Adhesives.

WEICONLOCK® are one-component anaerobic adhesives and sealants, especially made for metal assembly parts.

The full range covers over 60 different grades designed for everything from Thread Locking, Pipe Sealing, Flange Sealing and Retaining Cylindrical Assemblies like bearings. There are special grades for potable water applications, gas lines, oxygen service and more.

No matter the grade chosen, all types of Weiconlock Adhesive have a few things in common:

Excellent Chemical Resistance.

All grades of Weiconlock Adhesives are resistant to a large variety of different chemicals, fluids and gases. Some of the more common are summarised in the table below. A more comprehensive list is also available via the Media Tab..

Media Resistance   Media Resistance
Acetic acid 80% o   Oxygen
Aromat, Solvent +   Phenol +
Brake fluid +   Propane +
Diesel, heating oil +   Seawater +
Edible oil +   Silicone oil +
Fuel oil +   Turpentine +
Glycocol, glycine +   Vinegar +
Helium +   Water (acidic) under PH 7 +
Hydrochloric acid +   Water PH 7 to 8 +
Isobutane +   Water (alk.) over PH 8 +
Kerosene +   Water, chlorinated +
Mineral oil +   Water, cooked o
Naphtha, petroleum +   Water, distilled +
Natural gas - dry +   Water, wastewater (sewage) +
Nitrogen gas +   Xylene, dimethylbenzene +

+ = Good Resistance.
o = Resistant
% = Limited Resistance.
- = Not Resistant.

Easy to Use.

In general, WEICONLOCK does not require special pre-treatment as slightly oily surfaces (e.g. on as received parts) will be tolerated.

However, best results will be achieved on cleaned, degreased parts (use WEICON Surface Cleaner). If required, the parts should be slightly roughened.

WEICONLOCK is ready for use and should be applied evenly direct from the bottle/tube with the dispensing tip (avoid direct contact of dispensing tip with metal). Apply continuous bead on one side of flange, join and tighten parts quickly.

For sealing applications (pipe fitting) apply WEICONLOCK in circular motions on the thread. Screw pipe threads together and tighten until desired orientation.

Do not pour back into the bottle any WEICONLOCK fluid which had contact with metal; even smallest metal particles will cause the content of the bottle to cure. In series construction, the use of manual or automatic applicators is recommended.

Simple to Store.

WEICONLOCK can be stored in the unopened original container for at least 24 months at room temperature. Keep away from heat sources and direct sunlight. The air in the bottle/tube keeps WEICONLOCK liquid.


Colour Green
Viscosity 3.000 - 6.000 nt mPa·s
Maximum Gap Bridging 0.2mm
Breakaway strength (Thread)  28 - 36 Nm
Prevailing stregth 40 - 55 Nm
Shear strength Nmm² (DIN 54452)* 15 - 25 N/mm²
Handling Strength at Room Temperature 20 - 40 Minutes
Final strength (100%) after 24 Hours
Temperature Resistance -60°C to +200°C.

*Strength values based on M 10 screws, 8.8 grade, thickness of nut 0,8.d Static shear strength based on cylindrical parts of abt. Ø 13 mm, tolerance (D-d) = 0,05 mm, l/d = 0,88 

SKU SWM000084B01V0002
Model # 30620150
Brand Weicon
Shipping Weight 0.0770kg
Shipping Width 0.035m
Shipping Height 0.035m
Shipping Length 0.200m
Shipping Cubic 0.000245000m3
Unit Of Measure ea

Technical & Safety Data Sheet.

TDS Link SDS Link      
Weiconlock AN 306-20 TDS Weiconlock AN 306-20 SDS      

Related Content & Information.

AN 306-20 Adhesive for Cylindrical Assemblies Demo Video        
AN 306-20 Adhesive for Cylindrical Assemblies Demo Video        

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