that is a defitnly yes i had that lousy problem dealler say 200 bucks for a new vaule C and i went through 3 set of seals and none fit what so ever so i got some liquid gasket and made my own seal untill i went to a junk yard and pulled one from a b13 body and it fit and did a great job and I like my new color on my vaule cover
i have a 96 sentra....so you know they say that they discontinue the tube seal that why the PART NUMBER will not work that what they told me after i return the 50 dollars spark tube seal i spent 30 bucks for a new alumium VC .....and yes i dont think they were ment to be replace or not so easy on the the new vaule cover (black ones) so we have no choice to buy the WHOLE thing also i found on ebay that you can get the whole head gasket set includeing the tube seals for bout same price ... hopes this help