-40%
(pack) Rod Sealing U-ring K31 PU/NBR/POM ID 25mm-57mm (choose dimensions)

(pack) Rod Sealing U-ring K31 PU/NBR/POM ID 25mm-57mm (choose dimensions)

$ 1.5

Availability: 9608 in stock
  • Brand: Unbranded/Generic
  • Item must be returned within: 30 Days
  • Condition: New
  • Restocking Fee: No
  • Refund will be given as: Money Back
  • Return shipping will be paid by: Buyer
  • MPN: Does Not Apply
  • All returns accepted: Returns Accepted

    Description

    K31 is a three piece single acting sealing set which consist of one
    elastomeric main sealing element with additional sealing lip , one special pro‑le elastomer nitrile rubber that goes into the main sealing component and one thermoplastic back-up ring.
    PRODUCT ADVANTAGES
    • Able to work in high pressures
    • Superior sealing effect in low pressures
    • Easy assembly into closed grooves
    • Superior sealing effect with the secondary lip
    • Secondary sealing lip provides extra protection against the ingress of dirt particles.
    •High wear resistance
    •Improved sealing gap due to the active back-up ring
    APPLICATION
    Mining equipment , iron and steel industry , metal injection machines , scrap cutters , marine hydraulics , cranes and mobile hydraulics.
    MATERIAL
    CODE
    NBR
    70 SHORE A
    NB7001
    PU
    94 SHORE A
    PU9401
    POM
    PM9901
    OPERATING CONDITIONS
    MEDIA
    Mineral oils(DIN 51524)
    HFA ve HFB
    HFC
    TEMPERATURE
    -30°C +100°C
    +5°C +50°C
    -30°C +40°C
    PRESSURE
    ≤630 Bar
    ≤630 Bar
    ≤630 Bar
    SPEED
    ≤0.5 m/sn
    ≤0.5 m/sn
    ≤0.5 m/sn
    Note: The above data are maximum values and cannot be used at the same time.
    SURFACE ROUGHNESS
    Ra
    Rmax
    Sliding Surface Ød
    ≤0.4 μm
    ≤3.2 μm
    Groove Base ØD
    ≤1.6 μm
    ≤10 μm
    Groove Flanks B
    ≤3.2 μm
    ≤16 μm
    Note: It is recommended to have 50% to 90% of the working surface material contact area value.
    INSTALLATION
    Easily assembled into closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.
    NOTES
    K31 can be used in all type of cylinders safely due to the reason of perfect adaptation to the pressure changes.
    MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES
    (D-d)/2 (mm)
    ≤7.5
    10
    12.5
    15
    dmin (mm)
    50
    80
    100
    105
    PERMISSIBLE SEALING GAP
    Pressure (Bar)
    Smax (mm)
    150
    1.0
    250
    0.8
    400
    0.6
    630
    0.4
    Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.