Characteristics & Applications:
1. 3721 and 3721-1：Mechanical and
electrical applications; 3721 is better than 3721-1 in strength;
3721-1 is the economical product versus 3721
2. 3722, 3723, 3724 and 3725：Similar to NEMA Grade C, CE,
L and LE respectively
3. 3840：Mechanical and electrical applications, good moisture
resistance. If the usuage is not hindered, it is allowed to
have some cracks on top surface or section of rod with diameter
more than 25mm.
4. 3841 and 3841F：Similar to NEMA Grade G-10 and FR-4 respectively.
If the usuage is not hindered, it is allowed to have some
cracks on top surface
or section of rod with diameter more than 25mm.
used in Bushings, bearings, spacer rings in metal slitting,
rollers,Shaft bearings, close tolerance housings friction
bushings high voltage insulators, fuse tubes, and solenoid
and coil winding cores.lap spools, brush holders, liners fibre-lined
fuse tubes.pulleys, bushings, rollers and insulators.all electrical
and electronic applications