An injection molded black TPV part had randomly embedded white inclusions. Isolated white contaminants were soft and elastomeric. Upon testing, DSC indicated it was not EPR or EPDM. ATR further showed it to be silicone rubber. The customer confirmed that a different silicon sealant was used to seal the die.

This entry was posted on Friday, August 1st, 2014 at 2:34 pm and is filed under Contamination Identification. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.