made in america,!K Seal,tried it ,it worked for me,now put it in all my motors as standard on purchase.think its teflon,not sure though,Kalimex,greetings from the uk,I have a td4,2001,had slight problem recently with it not starting after it had cooled a bit after a journey,put it into the local lr dealer,he found nothing wrong,so i have had to sort it myself,because it seemd to be a temperature thing,it checked all the stats,no problem,anyway,eventualy found the problem by elemination,I sprayed the sensors one at a time each time it happened,with pipe freeze,{plumbers use it}this took the sensors back to cold,the cam sensor was the problem,when its cold it great,hot its great,warm its crap,hope you all have a good day,percy
