Sealing ring for standards adaptors

reference : OP0038

The sealing ring is positioned between the adaptor and the connection base located on the comparison test pump. It has 2 o-rings of different diameters, the positioning of the ring on the base is very important and depends on the adaptor used. Each adaptor indicates by an engraving on its black steering wheel, the appropriate direction, depending on the adaptor you will come to place the OOO or *** side at the top to guarantee tightness.

The ring is delivered with its 2 o-rings in standard version (suitable for mineral oils and water)