Hatch cover sealing solutions
MacGregor sealing solutions ensure complete weathertightness and effective functioning of the seal over an extended service life. They are designed to provide the best possible protection for cargo and vessel and reduce the need for maintenance to a minimum – resulting in reduced costs and increased safety.
Climate, cargo types and diverse customer requirements specify the criteria for selecting the right sealing solution.
Our comprehensive range of original seals and sealing systems includes everything from traditional sponge and solid rubber seals to advanced panel-joint sealing solutions offering various operating capabilities and flexible cargo handling. The performance of a seal is determined not only by the mechanical and chemical properties of the rubber material, but also by the geometry of the seal profile. The kinematics and movements of the hatch cover panels in a seaway and in operation also have to be taken into account.
We offer tested and proven seals and sealing solutions that mean trouble-free operations and safe cargo handling for all types of vessels. We can help you find the most suitable sealing solution for your vessel.
The importance of getting a good seal
A good hatch cover sealing system protects cargo and guarantees the safety of the vessel by:
- Allowing for hull, coaming and hatch cover deflections at sea and at the same time maintaining effective sealing in all situations
- Keeping water out by weathertight sealing between the hatch covers and the coaming, and in the hatch cover panel joints
- Keeping the cargo dry and inert gases inside the hold
- Keeping ballast water inside the hold.
A suitable sealing force is a prerequisite for the sealing arrangement to function correctly. This is not achieved by sealing alone as the whole coaming arrangement has to work properly at the same time. It is most important for the tightness of the covers that the counterpart position, in relation to the seal, is correct. The support pads, restraints and locators have to be arranged in an optimal way. Changes in one part of the arrangement can lead to changes in other components. MacGregor sees the system as a whole and knows how to balance all of its parts.
MacGregor’s sealing solutions comprise: FlexSeal, Cat Profiles, C Gasket, Omega, Omega Lite and Sponge.
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Services for hatch cover sealing solutions
Conversions for hatch covers
MacGregor’s conversion specialists adapt hatch covers to meet new market needs and lengthen their efficient service life.
Modernisations and upgrades for hatch covers
MacGregor’s modernisation services adapt hatch covers to meet new market needs and lengthen their service life.
Other hatch covers
Folding hatch covers
MacGregor folding hatch covers are designed to optimise cargo handling operations and ensure the safety of your ship.
Hatch cover control systems
Harsh conditions on deck mean that MacGregor sources specially-designed hydraulic and electrical control system components from select suppliers.
Hatch cover load transmission
Small pads play big part in structural performance; MacGregor is able to offer a range of bearing pad options to suit every operational need.
Hydraulic pivoting hatch covers
Pivoting hatch covers make the most efficient use of available deck space. They are ideal when multiple panels are not required, or when there is a short, vertical stowage space.
The MacGregor MacRack is an efficient, electric-drive system that combines drive and lift operations for side-rolling hatch covers.
Piggy-back hatch covers
MacGregor piggy-back hatch covers offer a compact, efficient design when there is insufficient deck space to accommodate folding, side-rolling or end-rolling covers.
Side-rolling hatch covers
MacGregor side-rolling hatch covers are commonly used on the weather decks of larger bulk carriers, such as Panamax and Capesize vessel types.
Stacking hatch covers
Stacking hatch covers for weather decks are usually all hydraulic in operation and the panels move into stowage or closure positions in a specific sequence.