... boards, ACF and other pressing projects5, Product Code: HC-XX A (T) (S)XX-thicknessA-dark blue, high thermal conductivityT-Black ... , excellent thermal conductivity, antistatic propertyNo "A" or "T" letters, it said that black, excellent heat resistance ... , and no powder7,the product list:HC,HC-S, HC-A, HC-AS, HC-TS silicone rubber sheet