978c

Single Spring Mechanical Seal 978C – Equal to industry standard number 978 / PS-978

Tapered spring for wide base to fit over impeller hub or other similar feature

1-1/4″ Single spring mechanical seal with 1.765″ x .365″ cup seat, 1.787? rotary OD, 1.062″ working length

Crimped rotary head type N-33, equivalent to Pac-Seal T-21 (tapered spring) and Burgmann MG9, can replace seal type D & 2 type seal heads.

Electro polished 304SS metal parts.

Single spring mechanical seal, with an elastomeric bellows, independent of the direction of rotation of the shaft. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

Have questions? Check out our Single Spring Seal Guide  or call us anytime—we’re here to help.

Please click “specifications” below for OEM numbers and Pump Nameplate Data