BlueRobotics Watertight Box - 300 x 190 x 87 mm (5 Liter), 300m Depth
Description
- BlueRobotics Watertight Box - 300mm x 190Mm X 87mm (5 Liter), 300M Depth
- Offers robust, corrosion-resistant anodized 661-T6 aluminum construction
- Allows easy access with radial O-ring seal and plastic locking cord
- Includes pre-drilled M1 holes for compatible hardware like WetLink Penetrators
- Provides threaded holes on the bottom and inside for versatile mounting
- Accommodates multiple applications with large and small size options
The BlueRobotics Watertight Box - 300mm x 190mm x 87mm (5 Liter), 300M Depth is a versatile and robust enclosure designed for various subsea applications. Unlike traditional cylindrical pressure vessels, this rectangular box offers a more convenient form factor for mounting printed circuit boards (PCBs) and other rectangular objects. The box is constructed from anodized 661-T6 aluminum, ensuring durability and resistance to corrosion. It is rated for depths up to 300 meters, making it suitable for a wide range of underwater projects.
The design of the Watertight Box includes several features that enhance its usability. The lid is sealed with a radial O-ring and secured with a plastic locking cord, allowing for quick and easy access without the need for screws. This feature is particularly beneficial for applications requiring frequent access to the boxs contents. The box also includes threaded holes on the bottom for easy mounting to various systems, as well as internal threaded holes for securing hardware inside. Users can employ standoffs or custom trays to organize the internal components effectively.
Additionally, the box is equipped with pre-drilled M1 holes compatible with WetLink Penetrators and other hardware, such as the Bar3 Pressure Sensor. For those needing to conduct vacuum leak tests or manage excess pressure, the use of a Pressure Relief Valve (PRV) is recommended. The boxs design also allows for the drilling of additional holes if necessary, and blank penetrators can be used to seal any unused openings. A depression on the lid provides a convenient space for labeling the boxs contents, enhancing organization and identification.
The Watertight Box is available in two sizes to accommodate different project requirements. The larger size includes handles on the lid for easier carrying and removal, and both sizes come with rubber feet for stability. Inspired by diverse customer applications, this rectangular enclosure offers a practical alternative to cylindrical vessels, providing a direct heat sinking path for hot electronics and eliminating the need for additional mounting trays.
Note: Ensure proper use of the Pressure Relief Valve (PRV) to conduct vacuum leak tests and manage excess pressure safely.
- 1x BlueRobotics Watertight Box - 300mm x 190Mm X 87mm (5 Liter), 300M Depth
- 1x Pressure Relief Valve
- 300 x 190 x 87 mm (5 liters)

- Pressure-rated
- Corrosion-resistant
- Flexible for various applications
- Rated for up to 3-meter depth
- Constructed from anodized 661-T6 aluminum
- Features a radial O-ring seal
- Includes a plastic locking cord
- Equipped with threaded holes for mounting
- Comes with pre-drilled M1 holes for WetLink Penetrators
- Designed with a depression on the lid for label placement
- Fitted with rubber feet
- Integrated with handles on the lid
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorisation (RA) before initiating a return request.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorisation (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A £100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tyres, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odour-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly * — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
- Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfil a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".