The powdered material of the seal is made up of particles of {HEAD ~ varying size} from 10 to 0.1 microns as this has been found to maximize the effectiveness of {TAIL ~ the seal} 
The powdered material of the seal is made up of particles of { HEAD ~ varying size } from 10 to 0.1 microns as this has been found to maximize the effectiveness of { TAIL ~ the seal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL