In article .com,
"ablebravo" wrote:

i have a couple of 'cap packages' that are stuffed w/wax -- or
whatever the brown goo is-- like the kind used to seal slugs in tuned
coils.

AB-

One common material used was beeswax, which is a beige or brownish wax.
Paraffin should work equally well, but is clear or frosty-white in color.

Fred
K4DII