1. Products
  2. Solutions
  3. Roxtec knock-out sleeve

Roxtec knock-out sleeve

Use the print button on the page for an optimized print layout.

Sleeve with knock-out plate for sealing prior to cable and pipe routing.

The Roxtec knock-out sleeve (KOS) keeps your building dry during and after construction, and provides spare capacity for future needs. The sleeve is easily fixed and cast into structures of varying thickness and ensures a tight seal until its plate is knocked out for cable and pipe routing. The sleeves have an integrated feature which allows them to be connected into space efficient clusters. Once cables or pipes are routed, they are to be sealed with Roxtec UG™ underground solutions in the corresponding size.

  • Light-weight
  • Area efficient
  • Quick and easy to install

To buy this product, please contact a Roxtec representative.

Contact us

Product characteristics

  • watertight.svg
    Watertight
  • gas-tight.svg
    Gas-tight
  • ip-ul nema.svg
    IP/UL NEMA

Ratings & certificates

Certificates are continuously added, renewed and replaced, please visit regularly to ensure compliance.

Fire

  • N/A

Tightness

  • Gas: 0.3 bar (constant)
  • Water: 0.5 bar (constant)
  • IP 68

Certificates

The ratings and classifications shown above represent examples of the verified performance of this sealing solution. For the full list of available certificates, please visit our Certificates page.

Specification texts

Print

Roxtec KOS (Roxtec knock-out sleeve, KOS,) is designed to seal the duct until cables are installed. Manufactured from black ABS plastic with innovative knock-out cover, easily removed when cables are routed. The KOS is available in two depth versions: 150mm that can be cut down to 120mm depth, and 100mm that can be cut town to 90mm depth, with internal diameters suited to fit sizes 100, 150 and 200mm Roxtec UG™ seals.
  • Extension possible with backside push connection to fit 110, 160 and 200mm Ø cable ducting
  • Sealed at point of civil construction
  • Knock-out cover, no special tools needed to open
  • Radius edge to avoid damage when routing cables
  • Approved and tested for use with Roxtec seals
  • Tested to 1bar catastrophic water pressure
  • Prevents ingress from water, vermin, gas and dust until cables are routed
  • Connectivity to form KOS clusters via press/snap connection
  • Area efficient formation with a centre to centre distance of 180, 250 or 280mm, depending on size, when connected via press/snap connection

Installation

Read more about the Roxtec sealing system and learn how to perform a correct transit installation on our installation pages.

Structure of installation

  • concrete_icon.svg
    Concrete

Mounting type

  • casting.svg
    Casting

Installation instructions

Seals for your industry

Explore the multitude of applications where you can benefit from our solutions.

Sealing component data

Here you find technical information about each specific part of our system.

Round frames/seals

Configure your own transit kit

Select your set of sealing modules