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Most lids you've ever used have pressure relief. It's not an extra part or valve or anything, it's just the simple geometry to ensure that the seal opens before
by Brian_K_White 6mo ago
Most lids you've ever used have pressure relief. It's not an extra part or valve or anything, it's just the simple geometry to ensure that the seal opens before the lid becomes mechanically free.
- flowerthoughts 6mo agoThermos has only been producing flasks since 1904. There shouldn't be an expectation that they already have this on a checklist of things to watch out for in new designs. /s