Each brake fluid container with a capacity of six fluid ounces or more shall be provided with a resealable closure that has an inner seal impervious to the packaged brake fluid. The container closure shall include a tamper-proof feature that will either be destroyed or substantially altered when the container closure is initially opened.
Automotive ProductsContainer Requirements
Section § 13720
This law requires that containers of brake fluid holding six ounces or more must have lids that can be resealed. These lids should have a seal inside that the brake fluid can't get through, and they must also include a feature that shows if the container has been opened by becoming damaged or changed in some way.
brake fluid container resealable closure inner seal