S-1301M Epoxy or S-1239 Epoxy
In the world of Covalence shrink sleeves (formerly called Raychem shrink sleeves) there are coating systems which require the use of a two part epoxy as one of the components. Generally, this two part epoxy acts as the primary corrosion coating AND acts as the bonding agent between the shrink sleeve adhesive sealant AND acts as the bonding agent between the shrink sleeve adhesive sealant and the factory applied coating (generally where that factory applied coating is fusion bond epoxy).
Examples of coating systems which do require one of these two epoxies:
- DIRAX - coating system for pipelines that will be involved with road bores, directional drilling applications or directional drill bundles (holding bumpers in place)
- HTLP60 - a three layer system, rated to 60C, that recreates the factory applied three layer polyethylene coating at the field joint, creating a pipeline with a homogenous coating through out
- HTLP80 - a three layer system, rated to 80C, that recreates the factory applied three layer polyethylene coating at the field joint,
- ROCS - the toughest field joint coating on the planet, made from the same material as DIRAX, but without the unnecessary leader strip (since the pipe won't be bored).
So, what is the difference between S-1301M and S-1239 Epoxy? They are virtually interchangeable except where operating temperature is a concern. S-1301M is rated for use up to 80C. S-1239 is rated for use up to 60C. Otherwise, either epoxy can be used with any of the coating systems above. Both offer the same performance. Both essentially cost the same. The only potential issue is that we ONLY stock the S1301M epoxy. There was a time when S-1239 was to be phased out and we switched everything over toe S1301M. I couldn't honestly tell you if that phase out ever occurred...but we planned as if it did.
In addition to all of that, both of those epoxies are available in two different configurations:
- A "Primer 15 Kit" which contains an application pad, a stir stick, two latex gloves and enough epoxy to coat approximately 15 square feet of pipe. If you were working with 2" pipe, this epoxy kit would be sufficient for coating 5 (or more) field joints...assuming the contractor is organized and has 5 field joints welded, cleaned and preheated so that the installer can spread all of the epoxy within the time frame allowed by the pot life of the material (which isn't typically a problem).
- A "Bulk Kit" is sold as multiple five gallon containers (with the S1301M: 3 "A" and 1 "B"). In addition to the kit itself, a crew will need: calibrated pump sets (to be certain they are mixing the epoxy in the proper ratio), an epoxy application kit which includes applicator pads, stir sticks, mixing cups and gloves, and possibly drum heaters to keep the epoxy warm when the weather is cold (like all epoxies, the S1301M gets very thick like honey when cool).
There you have it. Everything you wanted to know about S1239, S1301M or S1301 (which was replaced years ago by the S1301M epoxy). For more information or pricing - please contact me at your earliest convenience.
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