When tumbling either with a rolling or vibratory tumbling and which
ever media you choose. You must use some form of lubication, most
times the media supplier will have either a product or some
suggestions for what to use.
When you you get done with a run you must clean the items that are
tumbled, the can or barrel and the shot. No matter what you are
using wash it till the water runs clean. Washing the shot in a wire
strainer from the dollar store will let you have a couple. If you
store the shot dry then placing a towel on a baking sheet with the
shot spread out in a thin layer till it drys. If you store it wet in
a plastic jar in the recomended lube till the next time you must
wash the shot and barrel out everytime. No execptions.
If you wipe most any rubber product with a cleaner you probably will
get some carry over. The most common black scum on silver is from
not washing the shot and equipment good enough between uses. Some
cheap rubber rings and gaskets can be affected by any petro-based
If you want to lube or lightly grease the gaskets or o-rings use a
silcone based grease or go to a plumbings supply house and pick up a
tin of sexhauer (brand name) plumbing valve/faucet grease. a tin or
tube will last a long time.
been there, done that and broke it!