Part of the ZaGO Sealing Screw Series, offering customized Machine Screws with a selection of head, driver & thread types. ZaGO"™s Machine Screw's "œO" ring creates a seal against foreign matter, reducing the need of repairs & replacement parts - Suitable for use with the ZaGO self-sealing screws. KEY FEATURES • Machine Screw Seals • Custom Options • 'O' Ring Seal ZaGO Machine Screws are ready-to-use & also offer a range of self-sealing Machine Driver Types.