I received a fax flier from Tritronics that listed P/N 254599 as a gasket for 7" CRT's used in CTC169, 171, 178, 195 and P/N 254600 as a gasket for 9" CRT's used in a PTK188. I ordered three of each on the assumption they would be the real thing. What I got is actually a diaphragm, not a gasket. I then checked the part number in the RCA Partsfinder program and found that Thomson does call it a gasket so it is not the fault of Tritronics. Look out for this incorrect nomenclature since the diaphragms are seldom needed and won't fix a gasket leak. Philips P/N 313501302321 is a gasket that does work on the 7" CRT's ************************************************** Jim Myers Since 1972 Telrad Electronic Services Co. Fort Wayne, IN 46815 ************************************************* ***************************************************************************** CHECK OUT THE NEW CHATROOM! Just login and click on chat! http://www.tech-assist.org/secure/tip/main.htm The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.htm Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/