TO-220 Silicone Rubber Transistor Insulator - Pack of 20

Silicone impregnated rubber washers. Stop using messy silicone grease. These washers are made from silicone rubber and are as effective as mica and grease.Physical properties:- Colour grey- Tensile strength 40kg/cm2- Elongation 80%- Dielectric breakdown voltage 4000/0.3mm - Co- efficient of thermal conductance 2.4 x 10- 3- Flammability class 94V- 0/0.3mm- Dimensional stability 0.2% change/0.3mmType Pkt TO220 20