Bell & Gossett PL-130 Mechanical Seal Kit. Bell & Gossett 189174LF – Seal Kit for PL-130 & PL-130B. Bell & Gossett seal kit for B&G series PL pumps, specifically models PL-130 and PL-130B. Seal kits prevent the pump from leaking water at the pump shaft. It is recommend to order a new pump cover gasket when replacing the seal kit as it necessary to replace it each time the pump is opened for maintenance.