The Velcro material itself is not waterproof, however it is available with adhesive which is waterproof, so it can be used on materials that are constantly or often wet or underwater. A velcro 'seal' or interface is also not waterproof.
There are some waterproof robots, but normally they will sizzle then sink. You can a waterproof one in the Natural History museum in london.
Some but not all brushless motors are waterproof. To make sure that your motor is waterproof I suggest you either contact the maker or go the their website to check.
Good drainage is vital to having a dry house. A solid foundation with the drainage system and a waterproof membrane are critical. The ground around the house needs to slope away from the foundation. A good roof also protects the house, as do the siding materials.
waterproof glue is waterproof because of the zinc and iron that is inside of it; thay react to create an almost water resistant barrier.
poorna is the thing which CAN gave
Glass Paper Metal Wood Wool
Waterproof material is material that can withstand water. Waterproof material will not be damaged by the wetness of water being on it.
What exactly are you planning to waterproof?
Cementuous materials are not waterproof. Hydraulic cement is the closest they come, but even it becomes saturated.
Cohune Palm
Waterproof and water-repellent fabrics materials treated with various substances so as to make them impervious to water. Some examples are: Gore-tex Vinyl Fluoropolymers
The Velcro material itself is not waterproof, however it is available with adhesive which is waterproof, so it can be used on materials that are constantly or often wet or underwater. A velcro 'seal' or interface is also not waterproof.
Kevlar is a fiber that is knitted or woven into a material/fabric. Those materials can be laminated to be made waterproof, but Kevlar in and of itself as a finished good is not waterproof.
The best waterproof and weatherproof materials are the ones that say waterproof and weatherproof on the packaging. Then you can leave your lawn furniture out all year long.
They don't let water through.
they are mostly stuff like rian gear.