I used this word just now, and it occurred to me to look at its etymology. Turned out it is interesting:
gas[ket 7gas4kit8
n.
5prob. altered < Fr garcette < OFr garcete, small cord, orig., little girl, dim. of garce, fem. of gars, boy < ML *warkjone < Frank *wrakjo, mercenary soldier; akin to OE wrecca, WRETCH6
1 a piece or ring of rubber, metal, paper, etc. placed at a joint to make it leakproof
2 Naut. a length of rope or canvas for securing a furled sail to a yard or boom
blow a gasket [Slang] to become enraged