Encapsulated Tank Bolts are a specialized bolts that is polycapped with plastic such as...
Polypropylene
Nylon
Polyvinylidene Fluoride
A poly capped bolt is used when the bolt head will be exposed to potable water or caustic environments on the interior of a tank. The purpose of encapsulating the bolt is to prevent rusting or deterioration of the bolt and/or to keep water clean.
