SUB-SEAL™ J-tube Seals are utilised to seal the interface between the cable, umbilical, riser, hoses or thermoplastic composite pipes and the inside of a subsea J-tube.
J-tube Seals incorporate a water tight seal in which an anti-corrosion inhibitor is often introduced.
J-tube Seals can be provided in both diverless and diver installed solutions.
J-tube Seals typically will be combined with a centraliser arrangement, designed to accurately position the assembly within the J-tube during the pull-in campaign.
A J-tube seal closes the annulus between a subsea cable (or umbilical, riser, hose or TCP) and the inside of a J-tube, I-tube or monopile entry, keeping seawater out and allowing the space to be filled with a corrosion inhibitor.
Yes. SUB-SEAL™ is available in both diver-installed and diverless (ROV or topside-actuated) variants, chosen based on water depth, site access and project HSE requirements.
Nitrile (NBR), EPDM and Viton (FKM) — selected against the operating temperature, exposure to hydrocarbons and any inhibitor fluid used in the annulus.
SUB-SEAL™ is engineered to suit J-tube inside diameters from 150 mm through to 900 mm, with pressure ratings up to 30 bar.
Almost always. SUB-SEAL™ is typically paired with SUB-CENTRALISERS™ to position the cable coaxially inside the J-tube during pull-in and to prevent point loading on the seal itself.
Offshore wind (monopile and jacket foundations), floating wind, wave & tidal, and nuclear cooling-water intakes — anywhere a cable or pipe enters a subsea tube and must be sealed against water ingress.
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Contact Subsea Energy Solutions: sales@subenesol.co.uk · +44 1748 828 580 · Unit 04 Colburn Business Park, Chartermark Way, Catterick Garrison, North Yorkshire, DL9 4QJ, UK.