They breathe better if you do not have them sealed when you are baking them..ed _www.smecc.org_ (http://www.smecc.org) (resent due to error message) -------- Original message -------- From: Chuck Guzis <cclist at sydex.com> Date: 06/09/2015 9:46 PM (GMT-07:00) To: General at classiccmp.org, "Discussion at classiccmp.org:On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: Re: Blue tape retainers On 06/09/2015 08:21 PM, ben wrote: When baking tapes with the Wright Line seals, I've learned to remove the seals. If you leave them on, the tapes at 58C, will often just fall right out the seal--the coefficient of expansion is much larger for the seals than for the tape reels. After the seal has had a chance to cool off, it fits fine. This is particularly a problem with the smaller size reels. --Chuck