Rod seal UIR

Description
Asymmetrical single-acting hydraulic rod seal with a U-shaped profile. It seals the rod using system pressure: the higher the pressure, the greater the sealing effect. Its shortened inner lip and recessed sealing lip reduce friction, while the tight fit on the outer diameter ensures a stable seat in the housing. UIR is the standard design for hydraulics and standard cylinders.
Assembly
The UIR is fitted into a closed groove. Chamfer the edges of the housing and the rod to prevent damage, and clean the installation space before assembly. Do not pull the seal over sharp edges, threads or keyways: use a mounting sleeve if necessary. Oil the rod before installing the assembly to ensure a correct seal.
Advantages
Materials
Available in NBR, EPDM, FKM, FFKM, NR, CR, VMQ and PTFE materials, selectable according to the working fluid and temperature. This range offers an optimal combination of chemical resistance and thermal stability, with good behaviour against hydraulic oils, lubricating oils, greases and flame-retardant fluids HFA, HFB and HFC. Choosing the right compound ensures reliable sealing and a long rod service life.
Technical data
NO.ØdØDbBC
U-2*5.5*2.6 UIR25.52.63.12
U-4*12*6 UIR412674
U-4*12*4.5 UIR4124.554
U-4*8*3 UIR4833.52
U-5*10*4 UIR51044.52
U-6.35*12.7*3.96 UIR6.3512.73.964.463
U-6*12*4 UIR61244.53
U-8*13.2*3.1 UIR813.23.13.62
U-8*16*5.5 UIR8165.56.54
U-8*14*4.5 UIR8144.553
U-8*14*4 UIR81444.53
U-9.52*16.5*3.96 UIR9.5216.53.964.463.5
U-9*15*9 UIR9159103
U-10*18*5.5 UIR10185.56.54
U-10*13.6*2.3 UIR1013.62.32.82
U-10*14*2 UIR101422.52
U-10*16*4.5 UIR10164.553
U-12*22*7.5 UIR12227.58.54.5
U-12*18*4.5 UIR12184.553
U-12*20*5.5 UIR12205.56.54
U-14*18*4 UIR141844.52
U-14*22*5.5 UIR14225.56.54
U-14.28*20.63*4.76 UIR14.2820.634.765.763
U-14*19*3.5 UIR14193.542
U-15*23*6.3 UIR15236.37.34
U-15.87*22.22*4.76 UIR15.8722.224.765.763
U-15*22*4.3 UIR15224.34.83.5
U-16*24*5 UIR1624564
U-16*24*5.5 UIR16245.56.54
U-16*26*7 UIR1626784.5
U-16*23*5.5 UIR16235.56.53.5
U-16*22.5*4.5 UIR1622.54.553
U-16*22*5 UIR1622563
U-16*20.6*3.3 UIR1620.63.33.83
U-17.46*23.81*4.76 UIR17.4623.814.765.263
U-18*24*5 UIR1824563
U-18*25*5 UIR1825563.5
U-18*25*5.5 UIR18255.56.53.5
U-18*26*4.5 UIR18264.554
U-18*28*8.2 UIR18288.29.24.5
U-18*25*4.5 UIR18254.553.5
U-18*26*5.5 UIR18265.56.54
U-19.05*25.4*4.76 UIR19.0525.44.765.763
U-20*30*6 UIR2030674.5
U-20*28*5.5 UIR20285.56.54
U-20*30*8 UIR2030894.5
U-20*30*7 UIR2030784.5
U-22*30*7 UIR2230784
U-22*30*8 UIR2230894
U-22*32*6 UIR2232674.5
U-22*30*5.7 UIR22305.76.74
U-22.4*30*4.5 UIR22.4304.554
U-22*29*5 UIR2229563.5
U-23.81*36.51*6.35 UIR23.8136.516.357.355
U-24*34*8.5 UIR24348.59.54.5
U-24*32*5.5 UIR24325.56.54
U-25*35*6 UIR2535674.5
U-25*35*8 UIR2535894.5
U-25*33*5.5 UIR25335.56.54
U-25*32*6 UIR2532673.5
U-25*32*5.5 UIR25325.56.53.5
U-25*37*6 UIR2537675
U-25*32*7 UIR2532783.5
U-25*33*10 UIR253310114
U-25*35*7 UIR2535784.5
U-25.4*38.1*6.35 UIR25.438.16.357.355
U-26.99*36.51*6.35 UIR26.9936.516.357.354.5
U-28*38*6 UIR2838674.5
U-28*38*7 UIR2838784.5
U-28*38*8 UIR2838894.5
U-28*36*5.7 UIR28365.76.74
U-28*36*5.5 UIR28365.56.54
U-28*36*8 UIR2836894
U-28*35.5*5 UIR2835.5564
U-30*40*8 UIR3040894.5
U-30*42*8.5 UIR30428.59.55
U-30*40*7 UIR3040784.5
U-30*38*5.7 UIR30385.76.74
U-30*38*8 UIR3038894
U-30*38*6.3 UIR30386.37.34
U-30.16*38.1*6.35 UIR30.1638.16.357.354
U-32*42*7 UIR3242784.5
U-32*40*5.7 UIR32405.76.74
U-32*40*8 UIR3240894
U-32*48*8 UIR3248895.5
U-34*44*7 UIR3444784.5
U-35*45*8 UIR3545894.5
U-35*45*7 UIR3545784.5
U-35*45*10 UIR354510114.5
U-35*43*8 UIR3543894
U-35*43*6 UIR3543674
U-35.5*45.2*6 UIR35.545.2674.5
U-35.5*40.5*3.5 UIR35.540.53.542
U-36*46*8 UIR3646894.5
U-36*46*10 UIR364610114.5
U-36*44*5.7 UIR36445.76.74
U-36*44*5.5 UIR36445.56.54
U-36*46*7 UIR3646784.5
U-36*44*6 UIR3644674
U-37*47*8 UIR3747894.5
U-38.1*50.8*9.52 UIR38.150.89.5210.525
U-40*50*10 UIR405010114.5
U-40*50*8 UIR4050894.5
U-40*48*8 UIR4048894
U-40*50*7 UIR4050784.5
U-40*48*5.4 UIR40485.46.44
U-40*48*5.8 UIR40485.86.84
U-41.27*50.8*5.56 UIR41.2750.85.566.564.5
U-45*55*10 UIR455510114.5
U-45*55*7 UIR4555784.5
U-45*60*9 UIR45609105.5
U-45*60*7 UIR4560785.5
U-45*55*7.3 UIR45557.38.34.5
U-45*55*6 UIR4555674.5
U-45*61*12 UIR456112135.5
U-45*62*8 UIR4562895.5
U-50*60*10 UIR506010114.5
U-50*65*10 UIR506510115.5
U-50*60*7 UIR5060784.5
U-50*62*8 UIR5062895
U-50*60*7.5 UIR50607.58.54.5
U-55*65*10 UIR556510114.5
U-55*65*7.3 UIR55657.38.34.5
U-56*68*8.5 UIR56688.59.55
U-60*70*10 UIR607010114.5
U-60*70*12 UIR607012134.5
U-60*75*12 UIR607512135.5
U-60*70*11 UIR607011124.5
U-60*74*8 UIR6074895
U-60*72*8.5 UIR60728.59.55
U-60*80*12 UIR608012136
U-63*75*8.5 UIR63758.59.55
U-63*73*6.5 UIR63736.57.54.5
U-63.5*76.2*9.52 UIR63.576.29.5210.525
U-63*78.1*5.8 UIR6378.15.86.85.5
U-63*83*12 UIR638312136
U-65*75*10 UIR657510114.5
U-70*80*12 UIR708012134.5
U-70*85*10 UIR708510115.5
U-70*85*12 UIR708512135.5
U-70*82*8.5 UIR70828.59.55
U-75*85*12 UIR758512134.5
U-75*85*7.2 UIR75857.28.24.5
U-78*88*8 UIR7888894.5
U-80*90*12 UIR809012134.5
U-80*92*8.5 UIR80928.59.55
U-80*92*9.5 UIR80929.510.55
U-85*95*12 UIR859512134.5
U-85*95*7 UIR8595784.5
U-85*100*9 UIR851009105.5
U-90*100*12 UIR9010012134.5
U-90*102*8.5 UIR901028.59.55
U-90*105*12 UIR9010512135.5
U-90*105*11.5 UIR9010511.512.55.5
U-95*105*12 UIR9510512134.5
U-95*115*13 UIR9511513146
U-100*110*14 UIR10011014154.5
U-100*115*12 UIR10011512135.5
U-100*115*10 UIR10011510115.5
U-105*120*12 UIR10512012135.5
U-105*120*10 UIR10512010115.5
U-110*130*14 UIR11013014156
U-120*140*14.6 UIR12014014.615.66
U-120*135*9.5 UIR1201359.510.55.5
U-125*145*12 UIR12514512136
U-135*145*12 UIR13514512134.5
U-140*160*14 UIR14016014156
U-150*160*13.5 UIR15016013.514.54.5
U-150*170*15 UIR15017015166
U-155*165*12 UIR15516512134.5
U-160*170*12 UIR16017012134.5
U-180*200*11.5 UIR18020011.512.56
U-190*210*15 UIR19021015166
U-220*240*15 UIR22024015166
U-240*260*15 UIR24026015166
Plano técnico y parámetros de montaje de la junta de vástago UIR
Este esquema técnico define las cotas y variables geométricas esenciales para el correcto alojamiento y montaje de la junta de vástago UIR. En él se especifican las dimensiones críticas vinculadas a las tablas de especificaciones, tales como el ancho de la junta (b), el ancho de la ranura (B), el diámetro interior del vástago (Ød) y el diámetro exterior del alojamiento (ØD). Asimismo, se detallan el radio máximo del fondo de la ranura (r < 0.40 mm), la longitud del chaflán de entrada (C) y su ángulo a 20°. Estos parámetros aseguran un asiento estable en la ranura con un ajuste firme en el diámetro exterior, reducen la fricción mediante el labio interior acortado y garantizan una eficaz estanqueidad tanto estática como dinámica en cilindros estándar.
Vista tridimensional y componentes de la junta de vástago UIR
Esta ilustración en 3D detalla la estructura fundamental de la junta de vástago hidráulica UIR. En el esquema se aprecian sus elementos característicos: el anillo perfilado de elastómero con perfil en U asimétrico, los labios de estanqueidad asimétricos (con el labio interior acortado) y el labio de cierre rebajado. Esta geometría reduce la fricción en el movimiento del vástago, mientras que su ajuste firme en el diámetro exterior garantiza una colocación estable y un sellado eficaz que se refuerza a medida que aumenta la presión del sistema.
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