GWP Group

Waterproof Cases

IP rated protective cases guaranteed to reduce transit damage and the associated costs

If you have important equipment, tools, products or components that need to be kept dry and secure, you can choose from a wide range of waterproof cases that will provide a high performance solution for any requirement. With all case options being IP67 rated, you can be certain that water ingress will not occur.


Offering market leading moulded cases from brands including Peli, SKB, Explorer and Hardigg, your items can be further protected through full customisation of the cases interior. Besides custom manufactured foam inserts that are fully tailored your specific items, there are further options including mounting / bezel kits, dividers and even branding. Simply get in touch to discuss your requirements.

Waterproof Cases

Why source waterproof / tough protective cases from GWP?

  • Guaranteed protection from water ingress – even when submerged
  • Ideal for protecting a wide range of tools, equipment and products
  • Customised foam inserts for enhanced levels of impact protection
  • Also suitable for hot, dusty environments
  • Exceptionally tough, durable and hard-wearing


So if you are in an environment where water damage to equipment is proving problematic, you can now find your perfect water proof case.


Browse the options below for further information, or speak with a member of our team for free, unbiased advice.

Storm cases waterproof protection

GWP Protective recommended case


Storm cases are widely regarded as the leading waterproof cases available today. Their range of features makes them the easiest and most comfortable cases for frequent use, without compromising on toughness, durability or resistance to water. Find out more by clicking below.

Peli Cases

Most commonly used waterproof case


Peli cases are the original (and many say best) waterproof cases. Widely used throughout a range of industries and being particularly popular for military use, Peli cases are available in a wide range of sizes, are extremely tough and provide excellent protection from water, dust, impact and mis-handling.

Nanuk Waterproof Cases

Most cost effective option


Nanuk cases are manufactured from impact resistant NK-7 resin to ensure that the cases absorb shocks without damaging the items inside. Besides this, NANUK cases are watertight, lockable, ideal for stacking and come with a full lifetime guarantee. Click below to see how they could help you.

Free Guide: 15 crucial considerations for protection
Hardigg roto mould

Most durable option, extra heavy duty


Rota Mould or rotationally moulded cases, manufactured by Hardigg, offer a different range of benefits versus other waterproof cases. Ideally suited to larger, heavier items, plus extreme rough handling and environments, rota mould cases are exceptionally durable and strong. Find out more below.

SKB Cases

Best cost / performance balance


One of the newer waterproof cases on the market, SKB cases have quickly forged a reputation for providing high performance and durability. SKB protective cases are waterproof, dustproof, plus highly resistant to being crushed, impact and vibration. Click below for further info, sizes and specs.

Explorer Cases

Most suitable if appearance is important


Explorer cases are another waterproof option that enjoys widespread use in military applications. Many people feel the aesthetics of these cases is superior to their rivals. This does not come at the cost of performance however, with the cases being tough, hard wearing and IP67 rated.

Additional features of waterproof cases

Being an exceptionally competitive market, waterproof cases – as well as being the toughest available – also usually boast a wide range of additional features and benefits.


Every aspect of the various cases are thoroughly researched, developed and perfected to ensure that whatever brand of waterproof case you choose, it will be exceptionally secure, easy to use and offers exceptional protection from shock, impact and vibration as well as water and dust.


As a result, it is clear to see why so many businesses, professionals and indeed hobbyists will always choose a waterproof case.

What are waterproof equipment cases suitable for?

  • Any environment where water damage could be significant (e.g. marine, offshore etc.)
  • Military use and “mission critical” operations
  • Heavy duty industrial applications
  • Hot climates (also being dust proof)
  • Shipping or storing items which are sensitive to pressure changes
  • Aerospace, automotive, equipment hire, and service engineer applications
  • Any situation where products or equipment simply cannot be damaged

Testing and IP ratings

The obvious and critical feature of any waterproof case is its’ IP rating.


Standing for ingress protection, IP ratings are a measure of protection an item such as a protective case offers against the intrusion / ingress of foreign bodies.  This also covers solid foreign bodies, such as sand and dust, but is in effect, a measure of how waterproof a case is.


The 2 digit code provides a quick reference for the level of protection.


The first digit highlights the level of protection against contact with moving parts and the degree that items within an enclosure are protected against solid foreign bodies intruding.

Waterproof equipment cases

The second digit indicates the level of protection for the products / equipment inside the case against the entry of various forms of moisture. This includes dripping, spraying and submersion of various times / depths.


For a full chart detailing the levels of protection – and how these relate to the cases available through GWP – please download the PDF by clicking below. Alternatively, you can see an in depth article explaining IP Ratings here.

IP Rating guide

Quick IP Ratings Guide

For a summary of IP ratings, what they mean, and the range of cases available that fall into each classification, please click below to download a PDF guide.

Pressure relief valves

With the ability to be submerged underwater for prolonged periods of time, it is essential that waterproof cases can deal with potential changes in pressure. This is primarily achieved through the use of pressure relief valves.


Different cases offer different solutions to this. Some of the older, more established cases will feature manual pressure relief valves which need to be adjusted by the user.


However, much more common – and useful – is the introduction and widespread adoption of automatic valves. These automatically adjust and equalise the pressure between the inside and outside of the case.


This proves to be of great benefit if the case is submerged for a prolonged period, used in high altitude locations, or stored in the hold of an aircraft.

Pressure relief valve

For example, this can prevent cases “popping” open if they are exposed to particularly low pressure (e.g. in the hold of an aircraft) or rapidly move from high to low pressure (e.g. resurfacing after being submerged).


Many highly calibrated tools can also be sensitive to pressure changes. So if being transported via aircraft, the gradual equalising of the pressure inside and outside the case can be important for protection.

Ease of handling

The larger waterproof cases – regardless of manufacturer – tend to feature inline wheels to aid their transportation.


Usually integrated into the body of the case to avoid them becoming damaged, plus helping the case to retain its sleek design and outer dimensions, inline wheels enable ease of use when pulling the case – even over rough terrain.

Case with inline wheels

This feature can be particularly useful when transporting larger waterproof cases manually over prolonged periods or distances, especially with heavy contents.


In addition to the inline wheels on the larger protective cases, any case that benefits from these will also generally feature a telescopic, retractable handle too. This means that the case can be easily pulled when being transported manually, without affecting the outer design or size of the case.

Security features found on waterproof cases

Security is an obvious concern when transporting expensive, delicate, rare or specialist items, and the majority of waterproof cases have this covered.


Virtually all of the cases you can specify from GWP offer the ability to padlock the case, usually moulded into the exterior shell. This allows you to choose your won lock, including those which are accepted at airports throughout the US and other countries.


This is particularly important and useful if your waterproof case will be out of reach for any length of time (e.g. left on site, in the hold of an aircraft etc.) or if particularly expensive or sensitive items are to be kept within the case.


As such, this is a feature which is also widely seen on similar cases that are designed specifically for storing and transporting guns and laptops.

Free Guide: 15 crucial considerations for protection

Mounting electronics and integrated “bezel kits”

A key custom option for most types of waterproof case are what is known as Bezel kits.


Bezel kits are effectively an aluminium, rectangular frame that is used as a system to mount various types of equipment (predominantly electronic) into either the lid or the base of the case. The bezel (or panel mount kit as they also referred to) utilises moulded corner pieces that will fit at any depth within the case, allowing the equipment to be mounted at any height.


The bezel kits also come with extruded aluminium sections for the bezel sides, and these screw directly into the side of the case. Rubber “O” rings are also used in order to maintain the waterproof properties of the case.

Bezel kit for mounting electronics

The common use is for electronic equipment to be contained and / or mounted using these bezels.


Micro computers, measurement and metrological devices, testing equipment and much else can all be mounted within the case, allowing for ease of transportation, use and of course the protection provided by the case itself.

Pick & pluck or custom foam inserts

Waterproof cases typically come with 2 foam interior options.


The first of these is a standard, cubed foam insert. Also known as “pick and pluck” foam, the foam insert is divided into layers, and then further divided into one cm cubes which can be removed as required by the end user.


The key benefit of this is that the foam can be perfectly tailored to specific items, reducing movement in transit and adding a layer of cushioning protection. The foam can also be configured to allow for multiple items to be organised and stored within the same case.


This is particularly cost effective for low volume and one off case requirements.

Waterproof case with foam

If a higher volume of cases is required – or the protection levels must be the highest possible – the custom foam inserts would be the more appropriate choice.


These would see the foam designed and manufactured to the exact shape of your products or equipment, whilst it is also possible to calculate the precise level of cushioning protection required.

Free Guide: 15 crucial considerations for protection

Find out more about waterproof cases

If you haven’t yet found your perfect waterproof case then please get in touch – whatever your requirement GWP can help you with specific application.

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Widest choice of cases… 


Use the links below to see alternative waterproof case options, to view the other cases you can choose from, or find out about custom foam protection

Benefits for your business… 


Select from the options below to see how you can reduce costs, eliminate damages and streamline your operations

Related information… 


Please use the links below for further information on protective cases / foam inserts that you may find interesting and useful

The best (waterproof) equipment cases
Transit cases - how to decide which is best for your business
6 signs you need foam inserts

Free, no obligation advice… 


Click below to discuss your upcoming requirements, difficulties you are facing or to simply get advice from one our experts.

Why not see exactly how a customised waterproof case can aid your business…