The PC-3 is for seams during installation. We have used it to repair cracks too. I do not think that it is designed for drains, but listening to your situation, this might hold up (12-24 months longer) than
silicone.
Once it is cured, It will hold up to solvents and corrosives (as the specs state), but this is when it is used in bench joints and seams. It should do better than silicone for your application and you won’t have
to replace the whole end piece.
For less than $100 – I think this may be a good option (over silicone) – just be sure dry the sink out well before applying the product (use a heat gun – do it when the lab is out of session) and you allow proper
curing time after applying the product. Don’t expect it to last forever, you may have to reapply ever couple of years.
Good Luck
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU]
On Behalf Of Melissa Ballard
Sent: Thursday, February 14, 2019 1:10 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] lab sink question
James,
I had found the PC-3 products online as well but wanted confirmation. The sink was installed in 2006. It doesn’t seem to be damaged from what the plumber has indicated (and it’s not really feasible to replace as it is an end piece part
of a complete lab bench design). He has replaced the piping under the sink already but wasn’t satisfied with the material he used and wanted something better. Since I’ve been in this job, the only thing that goes down the drain are neutralized acids and general
washings from when we wash glassware – nothing too aggressive. Of course I have no idea what happened prior to me getting here!
Thank you all for your help!
Melissa Ballard - MSPH, CIH, CSP, CCHO
Industrial Hygienist / Industrial Hygiene Chemist
Michelin North America
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU]
On Behalf Of James Saccardo
Sent: Thursday, February 14, 2019 11:54 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [EXT] Re: [DCHAS-L] lab sink question
-MB
The black composite material that you are looking for is called PC-3
https://www.smooth-on.com/products/pc-3/
https://farwestmaterials.com/products/pc-3
Please do consider replacing the sink, recommend it, or plan for it in the future.
Good Luck,
James
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU]
On Behalf Of Melissa Ballard
Sent: Thursday, February 14, 2019 9:33 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] lab sink question
Would appreciate any assistance with this random laboratory question…The plumber at my facility is asking me what type of putty/epoxy/sealant (I really don’t know) he can use to repair the connection in our laboratory sink. It is where
the sink basin connects to the drain. Over the years the old material has degraded and allowed for leaking. Any ideas on a specific product or even a generic material type?
The sink itself is the standard lab grade, black epoxy resin material you see in most labs.
Thanks,
Melissa Ballard - MSPH, CIH, CSP, CCHO
Industrial Hygienist / Industrial Hygiene Chemist
Michelin North America
email: melissa.ballard**At_Symbol_Here**michelin.com
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