Abstract: A seal cartridge for providing a fluid seal between a rotating shaft and a housing such as found in a centrifugal pump. The seal cartridge includes rotating and non-rotating seal portions. The non-rotating seal portion includes a seal ring seat that is connected to the support sleeve by a frangible element. During installation, the frangible element is separated to release the non-rotating portion of the seal from the support member. The non-rotation seal portion includes an O-ring held by a stationary seal holder. An O-ring seal seals a circumferential periphery of the seal ring to inhibit fluid leakage between the holder and the seal ring. An inside radial end face of the seal ring abuttingly engages a radial end face defined by the holder which enhances heat transfer between the seal ring and the holder.