When it comes to thread locking and pipe sealing, one of the most common requirements we find is the need for a thread locker with high temperature resistance.
To make things in this area a little easier, we decided to put together this post which lists just our thread locking, pipe sealing, liquid gasket and cylindrical assembly adhesives that can withstand elevated temperatures.
What counts as a high temperature thread locker?
High temperature is a little bit of a loose term so we had to give it some definition. 150°C (302°F) wasn’t high enough as all our Weiconlock range will handle at least that. Therefore, we chose 180°C as a cut-off point. All the grades listed below will handle at least this temperature while a few will withstand higher. A little arbitrary I’ll admit but we had to start somewhere.
 Threaded Pipes and Fittings |
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 Cylindrical Assemblies |
 Flange Sealing & Gasketing |
High Temperature Thread Lockers / Sealants
Weiconlock AN 302-60 Thread Locking Adhesive For Passive Materials: 180°C
A specialised type of anaerobic adhesive designed to work with passive materials (like aluminium, nickel, gold, zinc and chrome) without the need for an additional primer. 302-60 is a permanent thread locker with a high cure strength and good elevated temperature resistance.
| Temperature Resistance | -60°C to +180°C |
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| Colour | Green |
| For Threaded Joins Up To | M20 |
| Cure Strength | High |
| Viscosity | Medium (700 – 1,000 MPa) |
| Handling Strength (at room temperature) | 2-5 Minutes |
| Final Strength (curing at room temperature) | 2-4 Hours |
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Weiconlock AN 302-72 High Temperature Thread Locking Adhesive: 230°C
A high temperature grade of thread locking adhesive able to withstand up to 230°C. 302-72 creates permanent, high strength bonds and seals and has a high viscosity which allows it to be used on threads up to M36.
| Temperature Resistance | -60°C to +230°C |
|---|---|
| Colour | Red |
| For Threaded Joins Up To | M56 |
| Cure Strength | High |
| Viscosity | High (6,000 – 15,000 MPa) |
| Handling Strength (at room temperature) | 20-40 Minutes |
| Final Strength (curing at room temperature) | 5-10 Hours |
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High Temperature Pipe Sealants
Weiconlock AN 302-80 Pipe and Thread Sealing Compound for Passive Materials: 180°C
High viscosity, high strength anaerobic adhesive able to be used not just on metal, but on many types of passive materials. Weiconlock AN 302-80 works with zinc, aluminium, nickel, high alloyed steel and many plastics. Very fast curing.
| Temperature Resistance | -60°C to +180°C |
|---|---|
| Colour | Green |
| For Threaded Joins Up To | M36 |
| Cure Strength | High |
| Viscosity | High (3,000 – 6,000 MPa) |
| Handling Strength (at room temperature) | 2-5 Minutes |
| Final Strength (curing at room temperature) | 2-4 Hours |
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High Temperature Cylindrical Assembly Adhesives
Weiconlock AN 306-20 Retaining Compound for Cylindrical Assemblies: 200°C
High quality, 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.
| Temperature Resistance | -60°C to +200°C |
|---|---|
| Colour | Green |
| For Threaded Joins Up To | M56 |
| Cure Strength | High |
| Viscosity | High (3,000 – 6,000 MPa) |
| Handling Strength (at room temperature) | 20-40 Minutes |
| Final Strength (curing at room temperature) | 24 Hours |
| Potable Water Sealing | Approved (KTW) |
| Gas Line Sealing | Approved (DVGW) |
| Oxygen Sealing | Approved (BAM) |
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High Temperature Pipe and Flange Sealing Adhesives
Weiconlock AN 305-10 Flange Sealing Adhesive: 200°C
A liquid gasket adhesive able to replace material gaskets for close fitting, metallic flanges, gearboxes and motor casings. This grade can tolerate gaps up to 0.5mm, is thick and easy to apply and cures with high strength. It withstands 200°C.
| Temperature Resistance | -60°C to +200°C |
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| Colour | Orange |
| For Threaded Joins Up To | Not For Threads |
| Cure Strength | High |
| Viscosity | High (70,000 – 300,000 MPa) |
| Handling Strength (at room temperature) | 15-30 Minutes |
| Final Strength (curing at room temperature) | 6-12 Hours |
| Gas Line Sealing | Approved (AGA and DVGW) |
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Weiconlock AN 305-74 Liquid Gasket Adhesive: 180°C
An easy to use alternative to thin, cut gaskets for metallic flanges and assemblies. Weiconlock AN 305-74 Liquid Gasket Adhesive is easy to apply, cures with high strength, has a high viscosity and is able to cover gaps up to 0.5mm.
| Temperature Resistance | -60°C to +180°C |
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| Colour | Orange |
| For Threaded Joins Up To | Not For Threads |
| Cure Strength | High |
| Viscosity | High (30,000 – 100,000 MPa) |
| Handling Strength (at room temperature) | 15-30 Minutes |
| Final Strength (curing at room temperature) | 12 Hours |
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