LeisureTime Leak Seal 32 oz Specially formulated for spas and hot tubs, Leak Seal seals minor leaks in spa surfaces and plumbing without draining. Convenient and easy-to-use, Leak Seal helps maintain your spa's surface and plumbing for years of enjoyment. Features: Seals minor leaks in plumbing No draining required Applications: Spa Maintenance: See product label for specific application instructions. Compatible With: Chlorine, bromine and ozone sanitizers.