The short answer is no; ballistic rubber is not recommended for bulletproofing. However, when combined with AR500 steel, ballistic rubber and steel can provide Level 3 properties. This is probably the most common misconception that ballistic rubber is in the bulletproof category. Steel and fiberglass can have an NIJ Level 3 Rating; ballistic rubber serves a different purpose.
Level 3 armor is the first level that protects against rifle rounds. This armor usually consists of rigid surfaces as opposed to soft surfaces, so it’s not concealable. Hard armor is also heavier than soft armor, but with that weight comes greater protection.
Ballistic rubber provides anti-ricochet protection first. The thicker the rubber, you start to add encapsulation abilities. Ballistic rubber knocks out ricochet while slowing down the round. The ability to slow down the round can save life on AR500 steel backstops.
Can ballistic rubber be used in safe rooms?
Ballistic rubber can be used in safe rooms, but not as bulletproofing. Only thick ballistic rubber can stop rounds. Meaning you would need to allow for very thick walls to slow or stop a bullet. Regardless of where ballistic rubber is installed, we always recommend AR500 steel when rubber is used in a ballistic application.
Ballistic rubber can be used to go over steel or fiberglass for anti-ricochet purposes.
Cumberland Rubber Supply does offer AR500 steel and Ballistic Fiberglass for situations that need an NIJ Level 3 Rated material.