b-12 October 31, 2015 Solutions Central › b-12 0 Vote Up Vote Down robski asked 9 years ago i've got an spray can of b-12 part no 0120. is it safe to use on plastic and rubber parts, if sprayed and left on for a minute or two? 1 Answers 0 Vote Up Vote Down chemtooler Staff answered 9 years ago Perhaps. B-12 is OK on most types of rubber for short periods of time but will instantly fog or dissolve many types plastics, including acrylic, PVC, ABS, and polystyrene. Please login or Register to submit your answer Username or Email Address Password Remember Me