One-time numbered plastic signalling device (indicator seal) "ALPHA-3.8" is designed to seal warehouses and offices, cars, sea and railway containers, freight cars intended for transportation of mineral fertilisers (hopper-mineralovozovozov, hopper-cementovozovozov), tanks, mobile containers of on-board supply, electrical cabinets, various types of containers and other objects with a diameter of holes for sealing in locking units not less than 3.9 mm in order to ensure control over their safety and detection of attempts of criminalistic influence. SU "ALFA-3.8" are two-component and consist of a casting and a locking insert.
The casting consists of a body, an information flag, and a flexible element ending with a grooved tip. A locking insert (clip) is inserted into the casting body, closed with a valve and welded.
Identification markings are applied to the clip.
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