Excuse my lack of O-ring design experience, but we are currently using an EPDM o-ring on a Polyester (PBT) housing, in which either a Polycarbonate (PC) or PBT lid gets screwed onto. The O-ring is a radial seal and is designed to have between 8-25% compression. I should also add that we are using a Molycote #44 lubricant that is compatible with EPFDM. The problem comes when the lids are screwed down on the housing, they go on very nice, but when left for a day or two they are very difficult (Sticky) to remove the lids.
Has anyone else experienced something similar and had a successful resolution?
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