I can't tell because I have not made use of the electrum wallet
But for all I know the 12 phrase is a means of recovery and if you lose it you should consider your wallet gone

As for the wallet I make use of (imtoken) you can recover the 12 phrase word but you will have to input your wallet password
But in the case of the imtoken if you lose the two(12 phrase words and password) consider the wallet gone; because imtoken does not support recovery of password. And I think no wallet support that either