something I know about. The thing to use is made by 3M. It is a black potting compound used to protect the electrical connections when servicing high-tension lines. It is available from Graybar Electric in two-part plastic packages; when the seperator is broken the parts mix, so can be kneaded well, then the package cut to release the goop. You have about 15 minutes of working time, and it becomes hard in about 4 hrs. I don't know the part number, but the distributor knows what it is. My client used (and still uses) this to protect and seal electrical connections for sewerline robots. Its a killer potting compound. --Bob James Nick Sears wrote: > Hello, > > I am making temperature sensors with an IC sensor enclosed in a 6 foot > piece of 1/2" diameter stainless steel pipe. I need an epoxy to fill > the pipe to protect the sensor, displace moisture, etc. I have been > checking prices on potting epoxies and it seems they are considerably > more expensive and difficult to locate than the standard hobby shop > variety, especially when only needing approximately 1/2 gallon. I am > looking for opinions on whether I should go for the potting epoxy for an > application like this or whether the standard variety epoxy would > suffice. The sensors will spend long periods of time (months to years) > at temperatures of approximately 200 degF. Thanks for any ideas. > > Nick > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- Replier: Most attachments rejected -------------- Bob Axtell PIC Hardware & Firmware Dev http://beam.to/baxtell 1-520-219-2363 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu