MBSM Shrink Sleeve

MBSM Wrap Around Jacket Repair (to 35kV)

     MBSM repair sleeves (heat shrinkable) protect cables in mechanically abusive environments.  They also rejacket premolded splices.  MBSM also repairs and rejackets LC shielded and moisture impervious cables.  MBSM is also used to provide strain relief to cables.

     MBSM is available in five different sizes; all supplied with a 5:1 shrink ratio (that is a high, high shrink ratio).   It is designed to be used on standard poly or elastomeric insulated / jacketed cables which may include aluminum or steel armoring.  MBSM provides a moisture vapor transmission barrier for repairing and rejacketing LC shield and moisture impervious cables.  MBSM sleeves do not provide electrical insulation.

MBSM 43/8-1200
MBSM 75/15-1200
MBSM 125/30-1200
MBSM 160/42-1200
MBSM 200/50-1200

The first letters (MBSM) are simply the material type
The first numbers (43, 75, 125, 160, 200) are all the supplied ID of the tube
The second numbers (8, 15, 30, 42, 50) are all the fully recovered OD of the tubes (fully shrunk)
The last numbers (1200) is the length of the tube in millimeters (or 4 feet long).

How Do I Repair a Cable?

Question:  I have a damaged cable, how do I repair it?

Answer:  The first thing you're doing to need to do is get yourself a properly sized CRSM wrap around repair system for power cable oversheaths.  

Step 1:  Clean the damaged area on the cable and the adjacent (undamaged) PE jacket.  

Lightly abrading the PE will assure the strongest possible bond. 

Step 2:  Remove the release paper from the CRSM shrink sleeve

Step 3:  Wrap the CRSM sleeve in place

Step 4:  Secure the rail and channel closure system in order to hold the CRSM in the shape 

of a tube during the shrink process.

Step 5:  Fire up your propane torch or industrial hot air gun and begin shrinking the sleeve; starting in the middle and moving your heat source circumstantially around the shrink sleeve.

Step 6:  Continue shrink the CRSM sleeve; working your way to one edge; 

then back to the middle; then out to the other edge.

Step 7:  Check to see that you have adhesive flow on both ends of the shrink sleeve (along the cable).  This is your seal.  If that adhesive is there; and the CRSM sleeve is conformed to the cable;

 you are finished.  Simple and easy!

CRSM Cable Repair Sleeves

     CRSM (Cable Repair Sleeves) are a multi-function heat shrink sleeve system used for a wide variety of cable repairs and low (1000 volt) splicing.  Utilizing a rail and channel mechanical closure system (which has been around since the 1960's), this product utilizes a high expansion backing and a thick adhesive sealant to cover many, many varieties of electrical repair/splice requirement.

     CRSM was invented in the 1970's.  Some might read that and think "wow; what an ancient technology; surely there is something newer out there."  Others (like me) would look at that and say "wow - 40 years of use and this product is still a leader in its field.  If there were problems with this product; they would certainly have been discovered by now."

     This product is available in a number of different sizes and widths.  The nomenclature is as follows:  the first number is the supplied ID of the tube (once the rail and channel is in place).  The second number is the fully recovered ID of the shrink sleeve.  The third number is the 'length' (some would say width) of the tube - or the coverage of the sleeve along the cable. 

Standard Sizes:

CRSM 34/10-200
CRSM 34/10-1200

CRSM 53/13-200

CRSM 53/13-1200

CRSM 84/20-750

CRSM 84/20-1200

CRSM 107/29-1000

CRSM 107/29-1200

CRSM 143/36-1200

CRSM 198/55-1200

Call or email today for pricing:  936/321-3333 or stacey@jsicoatings.com