I've carried one of the Blue Seal Savers in the top of my tank bag for a long time. Went to use it a couple days ago and the thing cracked and broke in pieces while inserting it in the seal. Fortunately no pieces ended up past the seal, as that would have been a pain to clean out. I suspect it deteriorated from UV exposure, or simply got old. I finished the job with one made from a milk jug. No more name brands for me, I will carry a couple of my homemade ones from now on.
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