WACKER Paste P12 is a silicone thermal grease from Wacker, rated 0.81 W/m·K. Typical uses: Electrically insulating heat paste. Short answer: we dispense it with a PCP progressive cavity pump.
Material at a glance
| Manufacturer | Wacker |
|---|---|
| Type | Thermal grease |
| Chemistry | Silicone |
| Thermal conductivity | 0.81 W/m·K |
| Viscosity | Pasty |
| Cure | non-curing |
From the manufacturer's published data (source). Always work from the current technical data sheet.
How we dispense it
For a single-component thermal compound we start with a PCP progressive cavity pump, fed from a cartridge for lab and low volume, or from a pail with a follower-plate pail pump for production. A progressive cavity pump meters by volume, so dot and bead size stay consistent. Pump size depends on your dot or bead size and cycle time.
- Abrasion: the ceramic filler that carries the heat wears pumps out. We use tungsten carbide rotors and wear-resistant stators and run the pump slowly, at 8 to 12 rpm, for long wear life.
- Feed: thick pastes don't flow to a pump on their own. Above cartridge volumes, a follower plate pushes the material out of the pail and keeps air out.
- Non-curing: there's nothing to purge, so the job is accurate, repeatable metering.
See our PCP progressive cavity pumps, or use the pump configurator.
Frequently asked questions
What pump should I use to dispense WACKER Paste P12?
For a single-component thermal compound we start with a PCP progressive cavity pump, fed from a cartridge for lab and low volume, or from a pail with a follower-plate pail pump for production. Pump size depends on your shot or bead size and cycle time; send us those and we will size it.
Can WACKER Paste P12 be fed from pails instead of cartridges?
Cartridges suit lab and low volume. Above that, a follower-plate pail pump feeds the metering pump directly, which cuts container changes and waste.
Does WACKER Paste P12 need mixing?
No. It is a single-component material, so there is no mixer and no ratio to hold. The job is accurate, repeatable volumetric metering, which is what a progressive cavity pump does.
Will WACKER Paste P12 wear out the pump?
Thermally conductive fillers are abrasive. With tungsten carbide rotors, wear-resistant stators and pump speeds of 8 to 12 rpm, stators typically last 6 to 12 months and rotors up to 24 months, and a pump rebuild takes under an hour.
Talk it through with us
Running WACKER Paste P12, or about to? Send us the technical data sheet, your bead or shot size and your cycle time, and we'll recommend a pump and feed system. We can run an application test on your material before you buy. Contact us
Related materials
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- CoolTherm TC-404 · Parker LORD, thermal grease
- DOWSIL TC-5622 Thermally Conductive Compound · Dow, thermal grease
- SilCool TIG3500H · Momentive, thermal grease
- X-23-8052 · Shin-Etsu, thermal grease
All thermal interface materials · Materials we've dispensed
WACKER Paste P12 is a trademark of Wacker or its affiliates. Dispense Robotics is not affiliated with the manufacturer; the name is used to describe the material our equipment dispenses.