Harmony the differential pressure within and outside the cavity to prevent condensation and untimely aging failures of structural seals; Certainly one of our stainless-steel vents offers the highest mechanical impact resistance score: IK10 (IEC 62262); An additional is IECEx and ATEX Accredited, for tools operating in most likely explosive environments. https://adhesivevents25791.activablog.com/32433270/the-definitive-guide-to-portable-electronics-vents