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Email: steve@jsicoatings.com

Monday, January 5, 2015

Shark Tooth Shrink Sleeve

Shrink Sleeve with no Leak Path

shark tooth shrink sleeve
Sharktooth cut heat shrinkable sleeve (DIRAX)
     Over the years, there have occasionally been engineers and technical people in the pipeline coatings industry who expressed some concern about a potential leak path at the overlap area of the heat shrinkable sleeve.  Truthfully, our experience with heat shrinkable sleeves (at least the Covalence, formerly Raychem product) makes a very strong case that those concerns are unfounded (WPCT Use History / DIRAX Use History).

     Though we don't really believe there is any need for concern there, the "customer is always right" as they say.  That is, anytime a customer has concerns...or even potential concerns, it is simply put: sound practice to address those concerns as well as possible.  Though our business cards would indicate we are in the pipeline coatings business, it is much more accurate to say that we are in the people business.  We are also in the "engineered solutions" business.  We are grateful every time we get the chance to address and alleviate concerns and that is what we did here.  That 'engineered solution' is named SharkTooth. 

     As you can see in the photo above, rather than a straight line step down area which geometrically and theoretically creates a single direct line from one side of the shrink sleeve to the other, we have created a zig zagged step down area where the shrink sleeve adhesive will be foiling waters attempt to reach that bare steel at every twist and at every turn. 

     Quick side note: if your installers are not properly following one of the final steps in the installation process of our shrink sleeves and using a silicone roller to put mild pressure to that step down area to assure proper filling and sealing -- please make sure they have a roller on hand to use by tomorrow!

     So, is a potential straight line leak path a concern of yours?  If it is; let's chat.  The SharkTooth cut shrink sleeve (DIRAX is pictured above) was tested extensively in a hyperbaric chamber to insure that even under significant pressure there was absolutely no water ingress.

Tuesday, December 30, 2014

Casing Seal / Flange Seal / CCS Weave


How Do I Seal Up A Casing?

     This post could also address:  How do I seal up (ie prevent corrosion) on a flange?  Both use the same material type in a different configuration.  Whether sealing a casing or a flange, a very simple way is the Covalence (formerly Raychem) Caseal or Flangeseal:

how to seal casing
Caseal (Casing Seal)

corrosion prevention on a flange
Flangeseal

     Both of these materials are manufactured using the CCS Weave material.  This material is a high expansion, multi layer, fiber reinforced, highly aggressive mastic sealant heat shrinkable sleeve systems.  Held together using both a mechanical closure system and a heat resistant closure system (to protect the mechanical closure system), these products have been successfully used for many years.

     The fiber reinforcement gives these products fantastic penetration resistance, abrasion resistance and tear resistance.  In addition, the high expansion allows these products to be used on multiple casing and flange configurations with ease.  These shrink sleeves shrink almost 65% (when allowed to by the substrate).  To look specifically at that shrink range:

CS 4500 (for a 4.5" casing pipe) is supplied with an OD of 5.5" and will shrink and seal down to a 2.375" carrier. 
CS 6625 (for a 6.625" casing pipe) is supplied with an OD of 7.625" and will shrink and seal down to a 3.5" carrier.  
CS 8625 (for an 8.625" casing pipe) is supplied with an OD of 9.625" and will shrink and seal down to a 4.0" carrier.  
CS 10750 (for a 10.75" casing pipe) is supplied with an OD of 11.75" and will shrink and seal down to a 5.563" carrier.  
CS 12750 (for a 12.75" casing pipe) is supplied with an OD of 14.25" and will shrink and seal down to a 6.625" carrier.
CS 14000 (for a 14" casing pipe) is supplied with an OD of 15.50" and will shrink and seal down to a 6.625" carrier.
CS 16000 (for a 16" casing pipe) is supplied with an OD of 17.50" and will shrink and seal down to a 8.625" carrier.

     This continues on up to actually sealing between a 48" casing pipe and a 30" carrier pipe.  Please be aware, this product is for sealing...it is not a centralizer or stablizer.