MRE-C909 replaces MJGordon Permasil #909C

Long con­sid­ered an indus­try stan­dard, MJ Gor­don Per­masil #909C car­nau­ba wax spray is no longer avail­able and is now replaced by Chem­linq MRE-C909.

If any man­u­fac­tur­er of semi­con­duc­tor devices were ever asked what they used to release epoxy mold com­pound from the mold, their answer was always the same: MJ Gor­don Per­masil #909C. Long con­sid­ered an indus­try stan­dard, M.J. Gor­don’s Car­nau­ba Wax Mold Release is dubbed as the “World’s Finest Car­nau­ba Wax Mold Release”. The rea­son for this pres­ti­gious hon­or was sim­ply because it worked so well.

What is MJ Gordon #909C?

MJ Gor­don Per­masil #909C is a non-flam­ma­ble, car­nau­ba wax aerosol spray used as a mold release agent for epoxy mold­ing com­pounds and oth­er ther­moset plas­tics. Not only did was the car­nau­ba wax com­pat­i­ble with epoxy, in some cas­es, it actu­al­ly enhances the final prop­er­ties, includ­ing ten­sile strength and max­i­mum displacement. 

What is so spe­cial about M.J Gor­don’s Car­nau­ba Wax Release is not nec­es­sar­i­ly the car­nau­ba wax itself (though this is also an impor­tant con­sid­er­a­tion), but the patent­ed process of mak­ing it avail­able in aerosol spray form. Typ­i­cal­ly, car­nau­ba wax is only avail­able in flakes, pow­der or clumps. These clumps are the same ones typ­i­cal­ly used by semi­con­duc­tor man­u­fac­tur­ers to wax the mold plunger or break in new molds. What the car­nau­ba wax aerosol spray ver­sion allows is uni­for­mi­ty, con­trol, and the con­ve­nience of an aerosol spray.

MJ Gordon Permasil 909C uses non-REACH-registered ingredients

Trou­bles with Per­masil #909C began back in June of 2007 when the Euro­pean Union intro­duced REACH, essen­tial­ly forc­ing man­u­fac­tur­ers to com­ply with new dis­clo­sure and reg­is­tra­tion reg­u­la­tions. As a long-time rep­re­sen­ta­tive of MJ Gor­don, CAPLINQ reached out to Allan B Gor­don of MJ Gor­don to dis­cuss alter­na­tives to the ingre­di­ents to be able to ensure con­tin­u­ous sup­ply after REACH was ful­ly intro­duced in 2018.

At the time, CAPLINQ was informed that there were no planned devel­op­ments or replace­ments for the MJ Gor­don Per­masil #909C.

Sens­ing the dan­ger this rep­re­sent­ed to CAPLIN­Q’s semi­con­duc­tor cus­tomers, we set about to start to devel­op our own alter­na­tive to the Per­masil 909C car­nau­ba wax for­mu­la­tion. After almost 10 years of devel­op­ment, this devel­op­ment result­ed in our Chem­linq MRE-C909 car­nau­ba wax aerosol epoxy mold release.

M.J. Gordon stop supplying Permasil 909C

In ear­ly 2019, CAPLINQ start­ed get­ting many phone calls, emails and inquiries about our abil­i­ty to sup­ply the MJ Gor­don #909C. We tried reach­ing out to Allan Gor­don and com­pa­ny but received no replies to any of the emails, or phone calls. 

Since CAPLINQ was just one of two dis­trib­u­tors for MJ Gor­don in Europe, the oth­er being Kemtron in the UK, we reached out to Kemtron to see if they expe­ri­enced the same thing. They informed us that they also had the same expe­ri­ence, they had also tried tele­phon­ing, email­ing etc but received no reply. They even con­tact­ed the Pitts­field local Police and asked if they could check to see if there had been a fam­i­ly dis­as­ter but received no reply.

In July of 2019, Kemtron ran out of stock and have had to pre­sume that the MJ Gor­don Per­masil 909C was no longer avail­able. Kemtron then con­tact­ed all of their cus­tomers and advised them to con­tact CAPLINQ as we had suc­cess­ful­ly devel­oped an alter­na­tive to 909C.

Below is the let­ter Kemtron had writ­ten to their customers:

I am writ­ing to advise you that we have not been able to con­tact MJ Gor­don Co for the last 6 weeks. This is very strange, and we can only pre­sume that the com­pa­ny is no longer trad­ing. We have spo­ken to their oth­er dis­trib­u­tors in the Nether­lands (CAPLINQ) and Sin­ga­pore and they report the same and have also had no com­mu­ni­ca­tion from them. Inter­net search­es and com­pa­ny reports have proved neg­a­tive in find­ing infor­ma­tion as to what could have hap­pened. MJ Gor­don was a very small com­pa­ny of just 2–3 people. 

Our stocks of Per­masil 909C are now down to 2 box­es (24 cans) and when these have gone we will not be in a posi­tion to sup­ply this prod­uct anymore. 

There is a prod­uct that may be able to replace the Gor­dons 909C which is avail­able from CAPLINQ. Please see

I sug­gest you con­tact Caplinq direct­ly, the cus­tomer ser­vice con­tact is Mar­jette Oost­er­veen and she can be reached by email at

MRE-C909 for many packages and many EMCs

As we con­vert cus­tomers from MJGor­don to MRE-C909, we would like to doc­u­ment the pack­ages and epoxy mold com­pounds they used. This has proved use­ful for oth­er cus­tomers eval­u­at­ing MRE-C909.

Package Types

MRE-C909 has been test­ed suc­cess­ful­ly on the fol­low­ing packages:

  • TO220
  • TO220FP
  • TO247
  • TO247FP
  • TO263
  • TO264
  • TO92
  • SOT93
  • SOIC8
  • SOIC16
  • QFP 
  • QFN 5x5
  • BGA

Epoxy Mold Compounds

MRE-C909 has been test­ed suc­cess­ful­ly with the fol­low­ing epoxy mold­ing compounds:

  • SolE­poxy: MG18, MG97, OP1000, OP7000
  • Hysol: MG15F-36A, MG36F-25A, MG33F-0520, MG33F-0620, GR300, GR30, GR360
  • Kyocera: KE-300BH
  • Sum­it­o­mo: EME-G770HCD, EME-G660, EME-G720C
  • Hitachi: CEL-9220, CEL8240

CAPLINQ MRE-C909 is a proven alternative to MJ Gordon 909C

For­tu­nate­ly for CAPLINQ and our cus­tomers, we had been prepar­ing for such a ter­ri­ble turn of events. Since the devel­op­ment of the MRE-C909, we had suc­cess­ful­ly con­vert­ed more than 20 cus­tomers from Per­masil 909C to our Chem­linq MRE-C909. Each cus­tomer spent 2–3 month val­i­dat­ing the prod­uct and each one then con­firmed back to CAPLINQ that this MRE-C909 car­nau­ba wax aerosol spray for epoxy mold­ing com­pound behaved the same as its predecessor. 

Please vis­it our web­site to view our entire range of semi­con­duc­tor mold main­te­nance prod­ucts includ­ing our semi­con­duc­tor epoxy mold release agents and specif­i­cal­ly our Chem­linq MRE-C909. You can also con­tact us about if you have any ques­tions about the MJ Gor­don 909C product.

About Chris Perabo

Chris is an energetic and enthusiastic engineer and entrepreneur. He is always interested in taking highly technical subjects and distilling these to their essence so that even the layman can understand. He loves to get into the technical details of an issue and then understand how it can be useful for specific customers and applications. Chris is currently the Director of Business Development at CAPLINQ.

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