Do the connectors have the silicone shrink wrap?
No they do not. Generally, with any coax you will not find shrink wrap, since the PL-259 connector covers the coax and is a tight seal.
The M&P connectors have a rubber seal to keep moisture out and are the finest PL-259’s I have seen in my Ham career. Have changed all my coaxes out to M&P and super happy with the entire line. Here is the link.
M&P coax is our top of the line coax for it superior shielding.
Thanks for letting us help with all your radio equipment needs
Happy Thanksgiving!
de Doug W3CF
Mike,
Note that if you want some coax seal in addition to what Doug mentioned, you can consider our Coax Seal SKU: ZCB21018
https://www.gigaparts.com/coax-seal-waterproofing-connector-wrap.html
Some amateurs use this around the connector at the antenna and at other outdoor connectors to cover the entire PL-259 connector to keep out water, snow, ice, etc.