▁originally ▁called ▁a ▁" C oo ke ▁Se al " ▁and ▁he ▁founded ▁the ▁Co oke ▁Se al ▁Company . ▁Co oke ' s ▁se al ▁( which ▁actually ▁did ▁not ▁have ▁a ▁means ▁of ▁drive ) ▁was ▁first ▁used ▁in ▁re fr iger ation ▁compress ors . ▁The ▁Co oke ▁Se al ▁Company ▁was ▁a ▁sid eline ▁product ▁for ▁Co oke ▁and ▁he ▁sold ▁the ▁company ▁to ▁Mus k eg on ▁P ist on ▁Ring ▁Company ▁where ▁it ▁became ▁the ▁Rot ary ▁Se al ▁Division . ▁ ▁Mus k eg on ▁P ist on ▁Ring ▁sold ▁its ▁Rot ary ▁Se al ▁Division ▁to ▁E G & G ▁Se al ol ▁who ▁were ▁later ▁acquired ▁by ▁John ▁C rane ▁In cor por ated . ▁ ▁The ▁first ▁commer cially ▁successful ▁mechanical ▁se al ▁to ▁be ▁used ▁on ▁cent rif ug al ▁p umps ▁was ▁probably ▁made ▁by ▁the ▁Camer on ▁Division ▁of ▁the ▁In gers oll - R and ▁Company . ▁ ▁The ▁Camer on ▁se al ▁was ▁installed ▁in ▁a ▁number ▁of ▁cent rif ug al ▁pipeline ▁p umps ▁in ▁ 1 9 2 8 . ▁▁ ▁Mechan ical ▁se als ▁in ▁the ▁ 1 9 3 0 s ▁often ▁used ▁a ▁face ▁combination ▁of ▁hard ened ▁steel ▁versus ▁lead ed ▁bronze . ▁ ▁Car bon - graph ite ▁was ▁not ▁widely ▁used ▁as ▁a ▁se al ▁face ▁material ▁until ▁after ▁World ▁War ▁II . ▁ ▁So ft ▁pack ing ▁was ▁used ▁as ▁secondary ▁se aling ▁elements . ▁ ▁The ▁O -