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Double seal/Unbalanced/Independent of direction of rotation/Multiple Spring
Double seals in the HQ-74-D series have the same design-feature as the “HQ7” family of single seals (easy-to-replace seal faces, ect.).Apart from the installation length of the drive collar, all fitting dimensions (d1<100mm) conform to DIN 24960.
Operating limits
d1=14 ~ 200mm 0.55”~ 8”
p1=25(40)bar 360(580)PSI
t= -50℃ ~ 220℃ -58℉ ~ 430℉
-20℃ ~ 180℃ -4℉ ~ 355℉
Vg=20m/s(10m/s) 66(33)ft/s
Limit for shrink-fitted carbide seal faces with d1≥105mm Axial movement:
d1≤100mm±0.5mm
d1﹥100mm±2.0mm