Hatch Cover Tape MF 30 - heavy duty sealing tape

General description

Hatch Cover Tape rolls

The function of hatch cover tapes is to protect the metal hatch covers on carriage ships against leakage of water into the carriage area. Extreme weather conditions often damage hatch covers making them prone to leakage which may lead to the damage of goods being shipped.

Mareflex MF 30 Hatch Cover Tape is a self-adhesive heavy duty sealing tape which can protect goods against damage caused by water leakage. MF 30 Tape is a very enduring material and guarantees protection in all weather conditions.

Mareflex MF 30 is composed of a bituminous mass which has the appropriate viscidity and is protected by polypropylene foil from one side and a release liner from the other. The tape is available in 20 meter rolls 100 and 150mm wide.

Physical properties

Thickness (total):2 mm
Shelf life16 months when properly stored


Product codeSingle roll sizeAmount of rolls
in a box
Box weightBox sizeIMPAISSA
MF30-100100mm x 20m315kg26cm x 26cm x 31cm23245443.003.00
MF30-150150mm x 20m215kg26cm x 26cm x 31cm23245543.003.00
Hatch Cover Tape boxes

Installation instructions

Hatch Cover Tape installation
  • Before applying the Hatch Cover Tape clean the surface to which it is to be applied thoroughly and make sure that the hatch cover is free of any salt from the sea-spray.
  • The surface must be dry before tape application.
  • In cold weather conditions use a torch to heat up the tape to achieve a better adhesive performance. The flame should be applied to the black surface after removing the release liner. Be careful not to use the torch in a fire danger areas.
  • Immediately after heating apply pressure to stick the tape onto the surface before the tape cools. This which will ensure optimum adhesion.

Maintenance and storing

Material should be stored in a dry and cool area and used within 16 months after goods receipt. It is recommended to store the rolls in the original packaging.

Mareflex provides the tapes in ready-to-sell, separate, cartoon boxes containing 3 rolls of MF30-100 or 2 rolls of MF30-150. Appropriate information is printed on each carton box.

MF 30 FlyerDownload MF30 Technical Data Sheet

PDF version of the Hatch Cover Tape flyer and Technical Data Sheet (1,7 MB).

About Hatch Covers

General regulations regarding Hatch Covers may be found in the Regulation UR S21, point 4.2 issued by the International Association of Classification Societies (IACS).

IACS Recommendation No 14 "Hatch cover securing and tightness" provides details regarding Hatch Cover sealings:

2.2.2 Weathertight sealings are to be obtained by a continuous gasket of relatively soft elastic material compressed to achieve the necessary weathertightness. Similar sealing is to be arranged between cross-joint elements. Where fitted, compression flat bars or angles are to be well rounded where in contact with the gasket and are to be made of a corrosion-resistant material.
2.2.3 The gasket material is to be of a quality suitable for all environmental conditions likely to be experienced by the ship, and is to be compatible with the cargoes carried. The material and form of gasket selected is to be considered in conjunction with the type of cover, the securing arrangement and the expected relative movement between cover and ship structure. The gasket is to be effectively secured to the cover.
Bureau Veritas (BV) Det Norske Veritas (DNV) Nippon Kaiji Kyokai (ClassNK) Lloyd's Register (LR) Korean Register (KR) China Classification Society (CCS) American Bureau of Shipping (ABS) Germanischer Lloyd (GL)