LID GASKET DESIGN
- The 2007 and prior
models have a deviation in design that helps you identify if your pump is made prior to 2003. It is important to know which design you have, as this will also determine the type of shaft seal you need.
The is 2003 to 2007
design uses a T-ring gasket; it gets its name from its T-shaped cross-section (p/n: SPX4000TS
The prior to 2003
design uses a standard O-ring lid gasket (p/n: 4664-14
The 2008 and late
r era of Northstar impeller and gasket choices are straightforward. This model’s design has no deviations from the beginning to the end of the era.