A rubber grommet cap or closure must match the specified opening or mating feature. Confirm the product drawing because caps, panel plugs and cable seals can have different constructions.
Specify dimensions, retention, temperature and any fluid or pressure exposure. Airtightness depends on the complete sealing interface, not merely an additive in the rubber compound.
Select the material for the intended food-contact or other regulated use and confirm the applicable requirements. For custom manufacture, provide a drawing or existing sample and agree on tooling, sampling and acceptance requirements. Verify fit and the required seal before placing a production order.
