Armstrong pump mechanical seal kit for 4030 medium frame pump with 11-1/2" impeller.
Includes mechanical seal 975000-984 and casing gasket 426401-006
Kit used with new style Armstrong 4030 with discharge line in top center of pump body. Old style 4030 has discharge line offset to 1 side.
Genuine Armstrong parts
Shipping rate for continental United States
Link to mechanical seal instruction pdf