Part of the ZaGO Sealing Screw Series, offering customized Security/Tamper-Proof Self-Sealing Screws with 'O' ring seals. Designed to provide maximum protection, against a broad range of threats. The ZaGO Tamper-Proof Screws are highly durable fasteners, blocking out fluid, pressure & other contaminants. KEY FEATURES • Self-Sealing Fasteners • Custom Options • Complete Fastener Security ZaGO Security & Tamper-Proof Screws offer a long cycle life, perfect for Commercial use.