This is from data I gathered in September 2005. So the links may be out of date.
Acoustic Caulk = 50 year caulk.
As far as your caulk, I would recommend using an "Acoustical Sealant". Most other caulks either dry hard or shrink over time. Causing an opening for flanking sound. Acoustical sealant is non-hardening and flexible and doesn't shrink. If you're having problems trying to find it, search for your local supply houses of drywall, insulation or steel framing supply places. Basically where the contractors go. There are several different brands to choose from...eg: Boss, Grabber, Tite Bond, etc.
Cost and size. Big tubes only need to be changed a third as often. At about $5 nowadays for a big fat 29-oz cartridge of OSI SC-175 Acoustical Sealant, that's equivalent to under $2 for a 10.1 oz tube. And you don't have to go crazy looking if you just call a local drywall supplier (not home improvement warehouse). They probably order from OSI routinely. Get a case or two and caulk away.
Eric Desart Says: Butyl acoustic caulks will also absorb vibration, so they are best
Rod Gervais says: GE Silicone II is the Mercedes of caulks, but if you only have a Chevy budget, OSI SC-175 will get you there too.
Brian Ravnaas (paraphrased): USG Caulk. Cleans up well. Works as well as the others
OSI SC-175 $2.97 US / 29oz (10 cents US per oz)http://www.84lumber.com/stores/zip_search.asphttp://www.osiproseries.com/adhesive...sound-sealant/http://doityourself.com/store/specialtycaulks.htmhttp://www.osiliterature.com/IMAGE/PDF/sO11175.PDF
Lepage PL Acousti-Seal $4.97 CDN / 850 ml ($3.75 / 29 oz, or 13 cents US per oz)http://www.lepageproducts.com/produc...id=69&plid=260http://www.lepageproducts.com/produc...y.asp?catID=26
unhappy mess: http://www.johnlsayers.com/phpBB2/viewtopic.php?t=3104
USG SHEETROCK® Brand Acoustical Sealant ($4.66 / 29oz, or 16 cents US per oz )http://www.capmat.com/images/bulletin_8_5_04.htm
$4.66 / 29ozhttp://www.usg.com/IC/products/Sealants/Acoustic.asphttp://literature.usg.com/pdf/J678.pdfhttp://www.allchurchsound.com/ACS/ed...torletter.html
available at whitecapdirect.com
"I just picked up a 29 oz tube of USG SHEETROCK® Brand Acoustical Sealant for $5.99 at Midtown Lumber & Hardware in New York City"
Mono acoustical sealant $1.89CDN / 10oz ($7.30US / 29oz, or 25 cents US per oz)
Price from Canadian Tire.
Soundsealant 29 oz. $7.50 US (or 26 cents US per oz)http://www.acousticalsolutions.com/p...ants/caulk.asp
Owens Corning Acoustical Caulk $2.89 / 10oz from special order from Lowes (29 cents US per oz)
Grabber® Acoustical Sealant GSCS $13.50 NZ / 850ml ($8.77 US / 29oz, or 30 cents US per oz)http://www.grabberman.com/acousticaldata.htm
GE Silicone II $5.25 CDN / 300 ml ($4 / 10oz, or 40 cents US per oz)
Titebond® Acoustical Sound Sealant $17.98 US / 29oz (or 62 cents us per oz)http://www.amistorefront.com/detail.aspx?ID=285
$17.98 / 29 oz (62 cents s per oz)http://order.americanmicroinc.com/cg...croinc/AS.html
QuietSeal QS-350 29oz Contractors Tube $19.95 US (or 69 cents US per oz)http://www.quietsolution.com/constru...adhesives.html
Auralex StopGap Acoustical Sealant ($19.95 / 29 oz, 69 cents us per oz)http://www.auralex.com/acoustic_seal...nt_stopgap.asphttp://www.bhphotovideo.com/bnh/cont...rch&Q=&ci=8390
Boss 824 Acoustical Sealant (Disavowed by Knightfly)http://www.bossproducts.com/BossProd...alog.asp?cat=2
bottom of the page/
"The Boss seemed to dry up and shrink a little bit, so I had to go back around and fill in some spots. I didn't have that much of a problem w/ the Grabber or Titebond, but I've used only a couple tubes of the Titebond so far. It's all easy cleanup though. No oily silicone stuff. "
Heat the tubes up first in a bucket of warm to hot water. The stuff will oozze out.