Water repellant, non-melting grease for creating airtight and waterproof seals in pipework. Can protect porous coated metals against salt water spray damage. Should be safe with most plastics.
WD-40 Specialist Silicone Spray Lubricant 400ml Can - Versatile All-Weather Protection for Extended Tool Life, Repels Moisture, Dust, and Grime - Smart Straw...
5.0

WD-40 Specialist High Performance PTFE Lubricant 400ml - Ultimate Multi-Surface Lubrication for Work, Home, and Outdoors
5.0