Since solenoid output force will continue to improve (though current draw will increase) with ambient temperature decrease, operation of standard designs in an ambient temperature as low as –65°F (–53°C) presents no problem. It is when solenoids will be operated in an ambient environment above 76°F (25°C) that some caution must be taken. If the
Coil wrapping tape is clear Mylar brand polyester film 0.002" thick which has been slit to the desired width and is used to wrap the coil in an overlapping manner. The film is per Mil-I-631 Type G, Form T, Class I, rated for 130°C continuous and meets UL file E-39505. Coil banding tape is Mylar
Tubular or cylindrical solenoids offer “maximum” magnetic efficiency and provides the best force/stroke.