£1.35 GBP Nitto Denko Vent silicon adhesive patch Int/Ext 200kPa 12x8mm oleophobic gray Good vent for a variety of programs. May be used on the inside or outside of a sealed gadget. Allows force to escape from the sealed uni...GORE® Packaging Vents reliably secure every kind of house chemical packaging from your manufacturing line to the end-pers