Flowserve U/D Series Pusher Seal
Product Brand
Flowserve
Type
Mechanical Seals
SubType
Pusher Seals
About this product
UC Series seals are balanced pusher seals with a substantial single coil spring that provides exceptional performance in the most demanding services including refineries, pipelines, and petrochemical services. UC seals are fully compliant with API 682, Type A requirements.
D Series seals are based on the UC Series, and add a pumping ring built into the rotating seal face body that establishes an exclusive Plan 23 cooling chamber around the seal faces. D Series seals excel in high temperature boiler feed water and hot hydrocarbon services.
- Extended service life in heavy-duty services assured by rugged single pusher seal with thick cross section components
- Increased reliability via large, low spring rate single coil spring that tolerates axial setting dimensions while reducing opportunity for clogging and hang-up from solids
- Consistent seal face contact provided by robust U-cup seal and spring holder
- Low-emissions performance enabled by silicon carbide rotating face mounted on graphite ring in UC and UCQ seals, preventing shrink fit distortions and sustaining a flat seal face
- High pressure performance in UO, UOP, D, and DP seals enabled by silicon carbide rotating face mounted on O-ring, preventing shrink fit distortions and sustaining a flat seal face
- Cost-effective operation ensured by integrated pumping ring in D and DP seals that establishes an exclusive Plan 23 cooling chamber around the seal faces and eliminates the expense of cool injection systems