Sentinel waterproof plastic cases have proven their durability during military operations and missions in inhospitable areas. Sentinel cases offer an optimum ratio between strength, appearance and weight. In addition, they are air, water and dust tight according to international standards MIL-810, IP67 and ATA300. Sentinel cases also meet all the other specifications you would expect from such a plastic case.

Sentinel. Strong on the outside, customised on the inside.

The Sentinel cases are available in numerous sizes. Always made of plastic and always strong on the outside. But also always customised inside. Thanks to Gefken’s customization possibilities, the interior of the Sentinel cases can be tailored to any desired requirement. The Sentinel cases can also be screen printed on the outside of the lid with your logo for optimum recognition.

From biometric identifiers to maritime measuring instruments.

Sentinel cases are often used under extreme conditions in the field. Equipped with a custom interior for laptop, iris scanner, signature pad and fingerprint scanner, the cases are used as a mobile workstation to identify and register persons on the basis of biometric data. For example, the cases have already been used to register people on location when introducing a healthcare system, but also to identify people on location during elections. Whether it concerns such a mobile workplace or a waterproof packaging for maritime measuring instruments, Sentinel makes it possible.

Gefken | Sentinel
Gefken | Sentinel
Gefken | Sentinel



During the introduction we will discuss your ideas and requirements. Asking the right questions, enables us to offer suggestions and discuss the best possible solutions.

We are then able to show the available materials and together reach the best possible option.

Design & Quotation

In the design phase, we work out the options discussed. You will receive an offer including 3D design.

The design is lifelike and can already display your artwork. The quote will be on your specifications and quantities and will allow you to assess our offer.

Prototype & Approval

Once you have received the quote and found it acceptable, you have the option of a prototype for further consideration on the design and materials. 

Any adjustments or modifications can be discussed and the final design approved.

Production & Delivery

The production of your order will be planned in accordance with your schedule and when complete, it will go through the final inspection. Once approved, the products will be packed and delivered. 

Should you wish to view the work in progress, then we would be pleased to discuss a visit to our manufacturing facility and arrange a convenient time.