: The whistle on the kettle keeps popping off Is it safe to use Teflon tape on a kettle whistle? I have a stovetop stainless steel kettle with a whistle so I don't walk away and forget it. The two parts of the whistle keep

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Given that PTFE (Teflon) tape is meant for use on drinking water pipes, and PTFE is used for non-stick cookware (which gets much hotter than a kettle spout), I'd happily use it (the type for potable water).

Making a habit of consuming it probably isn't a good idea but flecks of non stick coating do sometimes get into food, without poisoning anyone.

I've recently read a research paper suggesting that PTFE could be used to bulk out food as a weight-loss aid: Polytetrafluoroethylene Ingestion as a Way to Increase Food Volume and Hence Satiety Without Increasing Calorie Content. I'm not sure I fancy it, and it would contribute to microplastic pollution - but the paper proposes PTFE making up 25% of foods, while the worst that could happen here is a few scraps. They say it's safe. In rats.