Heat Shrink Tubing (Medium Wall)

MWTM Heat Shrink Tubing

MWTM Medium Wall Shrink Tubing

     Raychem invented many different varieties of heat shrinkable tubing made specifically for many different applications.  As an example, we have our WCSM - rated to 1000 volts.  But what about cases where 1000 volt resistance isn't needed?  Is there a more cost effective option?  Of course there is: MWTM rated to 600 volts. 

     The radiation cross linked PE backing is just a little thinner than the WCSM.  Thinner backing means less electrical resistivity.  Pretty simple. 

     The sealant coated MWTM (you know it is sealant coated when it has a -S in the nomenclature) is for use on insulation and jacket repair up to 600 volts or for general sealing and rejacketing of polymeric or elastomeric insulated cables up to 35kV.  MWTM has a 3:1 shrink ratio and an unlimited shelf life when stored under normal conditions.

     See the different sizes available above.  The first letters are of course the material type (MWTM).  The first number is the supplied ID of the shrink tubing.  The second number (after the /) is the size which the shrink sleeve tube will recover to.  The third number (1200) is the length of the tube as supplied (they can be cut down simply and easily). 

     So, the MWTM 85/25-1200-S is a tube rated to 600 volts, supplied with an ID of 85mm which will shrink down to a 25mm substrate - it is supplied in a 1200mm long tube (48") and is coated on the inside with a sealant adhesive. 

Raychem MWTM Tubing

Raychem MWTM Tubing

Raychem MWTM tubing is a medium wall sealant coated or uncoated tubing rated for use at 600 volts. Sealant-coated MWTM tubing (-S designation) is for use as insulation/jacket repair rated for use up to 600 volts or for general sealing and rejackerting of polymeric- or elastomeric-insulated cable up to 35 kilo-volt.

• RUS is accepted as jacket restoration of JCN cable.
• Uncoated MWTM tubing (-U or -A/U) is for cable rejacketing only.
• MWTM tubing has a 3:1 shrink ratio and an unlimited shelf life when stored under normal conditions.

 Commonly used Sealant-Coated MWTM Tubing 

               MWTM - supplied with a 10 mm id that shrinks down to 3 mm with a length of 1200 mm

               MWTM - supplied with a 16 mm id that shrinks down to 5 mm with a length of 1200 mm

               MWTM - supplied with a 25 mm id that shrinks down to 8 mm with a length of 1200 mm

               MWTM - supplied with a 35 mm id that shrinks down to 12 mm with a length of 1200 mm

               MWTM - supplied with a 50 mm id that shrinks down to 16 mm with a length of 1200 mm

               MWTM - supplied with a 85 mm id that shrinks down to 25 mm with a length of 1200 mm

               MWTM - supplied with a 115 mm id that shrinks down to 34 mm with a length of 1200 mm

               MWTM - supplied with a 140 mm id that shrinks down to 42 mm with a length of 1200 mm

Commonly used Uncoated, Spooled MWTM Tubing

MWTM - supplied with a 10 mm id that shrinks down to 3 mm packaged standard in a 100 ft spool

MWTM - supplied with a 16 mm id that shrinks down to 5 mm packaged standard in a 100 ft spool

MWTM - supplied with a 25 mm id that shrinks down to 8 mm packaged standard in a 100 ft spool

  MWTM - supplied with a 35 mm id that shrinks down to 12 mm packaged standard in a 100 ft spool

 MWTM - supplied with a 50 mm id that shrinks down to 16 mm packaged standard in a 75 ft spool

Commonly used Uncoated, Cut-Piece MWTM Tubing 
 MWTM - supplied with a 85 mm id that shrinks down to 25 mm with a length of 1500 mm
   MWTM - supplied with a 115 mm id that shrinks down to 34 mm with a length of 1500 mm
   MWTM - supplied with a 115 mm id that shrinks down to 34 mm with a length of 1500 mm