2-pin Waterproof, Electrical Cable Connector Plug | Fruugo UK
sourcingmap 5Pairs 4P 0.5mm Male to Female Waterproof Cable Wire Connectors for LED Strips : Amazon.co.uk: DIY & Tools
PCSL® Waterproof Cable Repair Joint Enclosure - Including 10 Gel Crimps, for use above or below ground for repair of telephone and data cables : Amazon.co.uk: Electronics & Photo
Pipe Penetration Waterproofing
Waterproof USB 3.0 Cable, IP67 metal A Male to A Male, 1.0M - ITM Components
Waterproof Ethernet Network Connection Gland | Green Feathers