[GaryVoshol]

<R02> ROBOT parts shall not be made from hazardous materials, be unsafe, or cause an unsafe condition. Items specifically PROHIBITED from use on the ROBOT include:
A. Shields, curtains, or any other devices or materials designed or used to obstruct or limit the vision of any PILOTS and/or COMMANDERS and/or interfere with their ability to safely control their ROBOT
B. Speakers, sirens, air horns, or other audio devices that generate sound at a level sufficient to be a distraction or hindrance affecting the outcome of a MATCH
C. Any devices or decorations specifically intended to jam or interfere with the remote sensing capabilities (including vision systems, acoustic range finders, sonars, infra-red proximity detectors, etc.) of another robot (i.e. changing ROBOT color to confuse opponent’s vision system)
D. Lasers of any type
E. Flammable gasses
F. Any devices intended to produce flames or pyrotechnics
G. Materials that off-gas noxious or toxic gasses
H. Materials that produce hazardous inhalable particles
I. Caustic chemicals
J. Hydraulic fluids or hydraulic components
Teams should provide MSD Sheets for any materials they use that might be considered questionable during ROBOT inspection.

(emphasis mine)