It's been a while since I've done any art 500 work, and I've sub'd out for a service station job, changing out sump's below fuel dispensers. My job is to disconect wiring and re-connect after new sumps are set. My question is this, the dispensers were wired using EYS's,UNF's and cap L's...what is the type of "seal off" that has the larger "screw in" filling neck? I just remeber them being easier to stuff and easier to "chip out" during future demo's