Retractable door seal, DDS 15/30 8s, Startec

for wooden doors

  • Application and function, automatic door seals
  • Area of application

    • Protection against cold, draught and vermin
    • Reduces light leakage
    • soundproofing
    • smoke control
    • Fire resistance
    • Safes energy of air conditioning systems (see following example)

    Example calculation of energy savings:

    Door width 960 mm,

    pressure difference between indoor and outdoor 10 Pa,

    room temperature 25°C and relative humidity of 90 %,

    outdoor temperature 35°C and relative humidity of 70 %,

    floor gap 7 mm

    Without seal: leakage rate approx. 41 m3/h

    With seal: leakage rate under 2 m3/h

    The area of application in which the door is used is mainly governed by the sealing profile material (PVC or silicone). High quality, self-extinguishing silicone seals are used for fire resistant and smoke control doors.


    Retractable door seals are available with single-side or double-side release mechanism. Seals with single-side release (with double doors) are released on the hinge side or on the lock side, depending on the model. Double-side release always means release at the hinge side and at the lock end. With double-side release seals, the sealing profile is raised and lowered faster, which prolongs its life time considerably.


    The sealing profile is pressed automatically against the floor or engages with a threshold as the door is closed.

    Automatic door seals can be distinguished between retractable door seals and sill seals.

    Sill seals are always used in combination with a threshold, it is, however, recommended to use retractable door seals also in combination with a threshold in case of carpet fitted floors or butt joints with different floor coverings.

  • Installation types, automatic door seals
  • Installation types

    Automatic door seals can be fitted in different ways depending on the model and application.

    Full mortice fitted, With mounting bracket

    Full mortice fitted and face fixed


    screwed on

    Plug-fitted and/or glue fixed (glass)

    screwed underneath


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    NONE Min. 1

    950.45.074 Dr.seal 708mm

    for wooden doors –, With mounting bracket, length 708 mm

    950.45.075 Dr.seal 833mm

    for wooden doors –, With mounting bracket, length 833 mm

    950.45.076 Dr.seal 958mm

    for wooden doors –, With mounting bracket, length 958 mm

    950.45.077 Dr.seal 1083mm

    for wooden doors –, With mounting bracket, length 1,083 mm

    950.45.078 Dr.seal 1208mm

    for wooden doors –, With mounting bracket, length 1,208 mm

    Product details

    Delayed hydraulic lowering (8 seconds)


    Time-delayed release


    With mounting bracket

    Area of application

    For soundproofing doors (DIN 4109)


    Carrier: Aluminium
    sealing profile: Silicone, self-extinguishing


    Carrier: Bright, sealing profile and release: Grey


    Single-side release, with delayed hydraulic lowering (8 seconds)

    Sound proofing value

    51.5 dB

    Sealing height

    ≤12 mm


    For full mortice fitting, with mounting brackets
    can be shortened at one end by ≤150 mm

    Installation dim.

    Groove: 15 x 30 mm


    For DIN left and DIN right hand use
    Product Features

    Supplied with

    1 retractable door seal

    1 mounting bracket set

    Order reference

    Fixed lengths available on request.

    Complementary products and accessories
    Corporate Office: Häfele America Co., 3901 Cheyenne Drive, Archdale, N.C. 27263
    Phone: 800.423.3531, Fax: 800.325.6197, Local Phone: 336.434.2322, Email:

    Retractable door seal, DDS 15/30 8s, Startec

    for wooden doors –

    • With mounting bracket

    • With holding clamp

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