They are not fully water tight i.e some water will ingress if fully submerged, no great problem other than the need to replace the product after drying your favourite dispensers.
Note that salt naturally draws moisture in, this is not a problem if you use it your pride and joy regularly.

Yes you can, a chilli Cap option will be included in the next production run

At the moment we are only offering ribbed or smooth cap sets and they cannot be mixed at the moment, you could buy a smooth Falcon and ribbed Vulcan and mix them up, the best of both worlds

We do ship internationally and you can find a list of available countries in our shipping rates page but we don’t take responsibility for import fees or taxes on delivery

Yes stainless steel is dishwasher safe but we recommend rinsing and cleaning by hand due to the small size of the componants

They will dull with time, Dependant on the environment you keep them in. However they will easily buff up to original finish.