i've never heard of anyone replacing the seal on those. mine went bad a while back and i just got new ones from napa. i think both were only like $30.

all you have to do is take off your drum, unbolt them from the backing plate, unbolt the brake line, and put the new ones in. really simple. this is of course implying that your brake shoes are removed already. probably a good idea to replace those too while they are off if they're worn.

oh, and make sure you clean everything real well and apply fresh grease to the contact points. you can also check out the articles section for more info.

87 22R PU, 2? body lift, 33? BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.