Pharmatech Dust Cap Seals are designed for use wherever two components are to be temporarily joined (docked) for product transfer.
The seals comes in two colours - translucent and cornflower blue.

Dust Cap Seals and Mounting Rings

How it works

The Dust Cap Sseal is located on a mounting ring and has a hole is cut in the middle of the seal. The hole needs to be smaller than the pipe going through it. After inserting the pipe the edge of the seal is bent down to make a dust tight seal around the pipe.

For a dust cap seal to work one of the components must move relative to the other. E.G. As can be seen in adjacent photo where the drum and cone are on a hoist and being lowered into the seal on top of the mill. (A)

Where this is not possible e.g. between mill outlet and the IBC which are both at fixed heights a sliding component can be put between the two and raised and lowered to give the vertical movement. made . (B)

Dust Cap seals and weighing Applications.

Dust Cap Seals are suitable for use at weighing interfaces with electronic scales and will not measurably affect the accuracy of weighing if simple precautions are taken. Ensure that the difference between the feed pipe and seal diameter are kept as large as practicable..