Product Feature
N:the out-ring can take out,inner-ring can not move.
NJ:the inner-ring can move one side,out-ring can not move.
NF:the out-ring can move one side,inner-ring can not move.
NUP:the seal with rubber,and brass,iron.the inner-ring can move.

Product Specification/Models
NJ210 50*90*20
NJ2304 20*52*21
NJ2305 25*62*24
NJ308 40*90*23
NJ2304 20*52*21
NJ219 95*170*32
NJ222 110*200*38
NJ309 45*100*25
NJ305 25*62*17
NJ307 35*80*21
NUP206 30*62*16
NUP310 50*110*27
NUP309 45*100*25

Application
NUP: used in hydraulic pump.
NJ(Small):used in swing and travel motor.
NJ(Big):used in swing pump and swing shaft.