While our bulbs are sealed, to further protect your lightbulbs when used in exterior installations where the bulbs are exposed to precipitation, we recommend installing them pointed downward (best), or outward (2nd best).

If bulbs must be oriented in an upright position, where the bulbs are most vulnerable to moisture penetration at their seams, we highly recommend using inexpensive socket gaskets.

PLEASE NOTE: Using socket gaskets when bulbs are aimed downwards is both unnecessary and potentially problematic, trapping precipitation in the socket.

Available for both E12 and E17 standard Christmas light sockets. 

*Not compatible with Tru-Tone Deluxe light strings or other non-standard style sockets.