E3D Kraken Plugs (M-WC-Plug)
These are the same plugs used in the Kraken Heat Sink and have a 1/8” BSPT Thread and use a 5mm Hex Key.
They have a wide range of applications in sealing and require a tapered hole.
Replacing these plugs on the Kraken should only be completed if you are confident in your ability to achieve an adequate seal. We use threadlock and a measured torque setting.