I've had to replace this thing once already and it needs to be done again! no pics right now cuz im at work and I just remembered i wanted to post this

has this happent o anyone else??!?! the little rubber thingie in the lid keeps ripping and coming out!!!! its a PITA!!! if Im the only one with this problem..can some one please throw me a P/N for new one...I tryed the after market rubber thingie from Pep boys.. lasted 4/5months...... Ill get ya a pic later today! thanks guys!

How is the rubber seal ripping?

Unless you have a need, this cap is never moved.

no clue on how..... i was installing the rest of my airhorn project and noticed that the lid was sitting at an angle, took it off and noticed it ripped and woodnt fit back into the lid.
the first time was the same thing...workin under the hood and noticed it. I have no clue as to what makes it lose..

Seems like you have bigger problems then just a cap seal.

ahh f**k!!!! dont tell me that......I havent noticed any other problems.... no loss of fluids or brakeing.....waitttttttttttttttttttttttttttttttttt ttttttttt sometimes when driving I have to REALLLLLLLLLLLLLLLLLLLLLY have to hit the brakes to stop and even than I still think im not going to stop in time...but this is rare/non-rare. when it happens it feels as if there is no pressure in the lines.....hmmm maybe i do have a problem!! shoot! like i said, ill take a pic tonite and post it. any ideas Bill???? thanks for the help so far!!

Off the cuff..if you have noticed a torn seat and loose cap twice. That seems odd to me. You aren't loosening it, and no one else is messing with your car. How did it get loose and how did that seal get ripped? I've seen 100 year old cars with the original seal.

When you push the pedal it pressurizes lines.. I'm thinking something (no ideas) is causing a problem and the pressure is coming back, popping your cap and hammering the seal. It'* infrequent since you've only noticed the cap twice.

I'm going to ask others for input on this one..it'* not really something I have lots of experience with.

good enough for me! thanks for your help!

could be a crimped or damaged brake line. follow your lines to all four wheels, if you have 4wheel disc, you might have ran over something that damaged a line underneath your car. There is enough pressure to pop the lid if the lines have a crimp or are completely blocked.

I chatted with a couple X sperts on it. (yeah..I said that one right)

We are at a loss and I like Chads response. Something seems wrong here and there is probably a deeper problem that'* popping the cap and tearing your seal.

I like Chad'* thinkin also... Im going to have to do this to make sure...cause ther has been a couple of times that I have hit a curb coming out of a parking spot man I hope thats all it is, a bad line....seems easy to do?!?! or is it!?!? and/or am I just a complete fool for that last statement?!