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Deck Seal Spare Parts Suppliers

Deck seals are a key safety barrier on tankers and gas carriers. They sit between the cargo tanks and the inert gas (IG) plant, preventing hydrocarbon vapors from flowing back into the engine room or boiler. A failed seal can lead to dangerous gas migration, IG plant damage, or detention during port state inspection. Keeping the right spare parts onboard is essential for steady operation and class compliance.

RecordsMarine maintains a directory of deck seal spare parts suppliers for tanker operators, gas carrier managers, and IG plant maintenance teams.

Common Deck Seal Types

Most tanker fleets run one of three deck seal designs:

  • Wet (semi-flooded) deck seals — the most common type
  • Dry deck seals — found on newer high-flow IG plants
  • Combined wet/dry seals — used on some LNG and LPG carriers

Each design has its own parts list, water level controls, and inspection cycle. Trusted suppliers of spare parts for deck seal units stock items matched to each model and serial number, which keeps the IG line within class survey tolerance.

Critical Spare Parts to Stock Onboard

Deck seal failures often happen at sea, far from any spare parts depot. Items most often kept in technical stores:

  • Float valves and seal water level sensors
  • Non-return valves and check valves
  • Demister pads
  • Pressure and vacuum (P/V) valves
  • Drain valves and ball cocks
  • Thermometers and pressure gauges
  • O-rings, gaskets, and seal kits
  • Internal piping and spray nozzles

A small ship-set covering these items can prevent a full IG shutdown during cargo operations. Working with established providers of spare parts for deck seal equipment also makes restocking simpler during routine port calls.

Recommended Brands

Deck seal equipment comes from a small group of OEMs. Common names worth knowing:

  • Alfa Laval (Smit Gas)
  • Wärtsilä Moss
  • Hamworthy / Wärtsilä
  • Coldharbour Marine
  • Maritime Protection (Survitec)
  • Kashiwa
  • Sumitomo

Spares matched to the original maker stay traceable during class surveys and protect the OEM warranty. Sourcing from approved parts distributors for deck seal systems gives access to certified components with full paperwork.

What to Check Before Ordering

Practical points to review before placing an order:

  • Original maker reference and serial number of the deck seal
  • Material certificates for pressure-bearing parts
  • Stock visibility for legacy seal models
  • Delivery times that fit your trading pattern
  • Spare seal kits matched to upcoming dry dock work
  • Certificate of conformity with each shipment

Industry Standards

Deck seal spare parts must meet SOLAS Chapter II-2 Regulation 4 on inert gas systems, IMO MSC.1/Circ.1280 guidance, and class society rules from DNV, ABS, Lloyd's Register, and others. ISGOTT also covers operational requirements on tankers. Type-approved components keep the IG plant compliant during oil major vetting and port state inspections.

Frequently Asked Questions

How often should deck seals be inspected?

Daily water level checks during cargo operations, plus full internal inspection during dry dock.

What is the most common deck seal failure?

Loss of water level due to faulty float valves or blocked drains. Demister pad fouling is also frequent.

Can deck seal parts be replaced afloat?

Most internal parts can, with the IG plant shut down and tanks gas-free. Major work usually waits for dry dock.

Are aftermarket parts acceptable?

For minor consumables, often yes. For valves and pressure parts, OEM is the safer choice.

What happens if the deck seal fails during loading?

Cargo operations must stop until the seal is restored, since the IG line is no longer protected.

Find Deck Seal Spare Parts Supplier Near You

Below is a vetted list of suppliers stocking deck seal parts at major tanker and gas carrier ports. Pick from the entries to match your seal model and ordering window.

  • SEASTAR (HK) TRADE LIMITED logo

    Year Founded: 2018

    Verified

    SEASTAR (HK) TRADE LIMITED

    Verified

    providing original spare parts for main engines, auxiliary machinery, engine room equipment, and deck auxiliary systems to domestic and international shipowners and management companies. competitive pricing Our global service network and professional logistics team ensure timely delivery of your spare parts to designated ports and destinations. Heat Exchanger Galley Equipment Electric motor Deck Crane Grab Windlass Mooring Winch Hatch Cover Gangway Ladder Winch Steering Gear Pintle Bush Synthetic Phenol Resin Valve Fire Alarm Detector Navigation Communication Equipment Water Ingress Alarm System Electrical Instrument and Automation Fuel Valve Test Device Main Engine Auxiliary Engine Turbocharger Air Compressor M/E Auxiliary Blower Pumps Boiler Incinerator Fresh Water Generator Oily-water Separator Sewage Water Treatment Plant 15ppm Bilge Alarm Fuel Oil supply Module Purifier Refrigeration and Air Conditioning

    supply@seastartrade.com

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

      (195)

    BRAND:

    • ALFA LAVAL

    • WARTSILA

    • Kashiwa Tech Co

    • Sung Shin Engineering

    • HYUNDAI HEAVY INDUSTRIES LTD

      (3)

    CLASS APPROVED:

    IACS: ABS, ClassNK, CCS, BV

    WAREHOUSES:

    • China

  • Japan Marine (S) Pte ltd logo

    Year Founded: 2011

    Verified
    Verified

    We have listed our Key Strength Equipments as below for easy reference. We are strong in Main engines Aux Engines /Generators Compressors Main Air , Breathing , Refrigeration, Marine Pumps Purifiers /Separator Hatch Cover Spares / Hydraulic spares Electrical Hydraulic Motors Air horns Toilet Vacuum Systems Electrical spares and small components A/C Compressors HVAC system spares Boiler and Incinerators https://jmsgroup.jp/products/

    jmsgroup.jp
    operations@jmsgroup.jp

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

      (177)

    BRAND:

    • ALFA LAVAL

    • WARTSILA

    • Kashiwa Tech Co

    • Sung Shin Engineering

    • HYUNDAI HEAVY INDUSTRIES LTD

      (3)

    CLASS APPROVED:

    IACS: DNV

    WAREHOUSES:

    • Singapore

    • United Arab Emirates

    • Angola

    • Austria

    • Australia (209)

  • ARK MARINE SERVICE INC. logo

    Year Founded: 2004

    Verified
    Verified

    We specialize in providing original equipment supplies, primarily for main and auxiliary engine spares. As a factory-based company, we ensure the best pricing without compromising on quality. Our dedicated logistics team handles all deliveries efficiently, offering competitive rates for air, sea, and courier services.

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • Alpha Lubrication Systems

    • Anemometers

      (162)

    CLASS APPROVED:

    IACS: ClassNK, BV

  • MARINE INDUSTRIAL GROUP LIMITED logo

    Year Founded: 2025

    Verified
    Verified

    SUPPLIER OF OEM , ORIGINAL , OR SECOND HAND OF MARINE PARTS -Marine oil Lubricants -Marine Engines -Pumps -Main Engine -Auxiliary Engine/Generator -Engine Spares -Propeller -Hydraulics -Pumps Spares -Oil Purifier Spares -Heat Exchanger -Air Compressors Spares -Turbo Chargers Spares Marine Industrial Group: Excellence in Marine Solutions With a commitment to superior service and quality products, Marine Industrial Group is your go-to source for marine engineering supplies. We specialize in ship spare parts and auxiliary systems. MIG- Marine Industrial Group Limited

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • Alpha Lubrication Systems

    • Anemometers

      (166)

    WAREHOUSES:

    • Hong Kong

  • NEW CHANNEL CHINA INTERNATIONAL CO LTD logo

    Year Founded: 2010

    RM verified
    RM verified

    SHIP SPARE PARTS, SHIP EQUIPMENT, ALTERNATIVE SOLUTIONS, SHIP REPAIR, INSPECTION SERVICES, SHIP REPAIR BROKER, OFFSHORE EQUIPMENT, CONSUMERABLES, PROVISIONS, ON-SITE SUPPLY SERVICE PROVIDER, TECHNICAL TEAM FOR ASSISTANCE

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Air Horns

    • Air Reservoirs

    • Air Starters

    • AIS (Automatic Identification Systems)

    • Alpha Lubrication Systems

    • AMS (Alarm Monitoring Systems)

    • Anemometers

    • Anti-Heeling Systems

    • ARPA (Automatic Radar Plotting Aids)

      (166)

    CLASS APPROVED:

    IACS: ABS, RINA, ClassNK, CCS, BV, CRS, PRS, KR, LR, DNV, IRS

    Non-IACS: RMRS, HRS, Other

  • HUB MARINE SHANGHAI LTD logo

    Year Founded: 2025

    spare part/store: hydraulic spare, high pressure washing machine, accommodation ladder, rubber gasket, air vent head, manholes cover, air starting motor, cable, valve, bearing, 15PPM, AMS, BWTS, MGPS, OWS...

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AMS (Alarm Monitoring Systems)

    • Accommodation Ladder Davits

    • Air Compressors

    • Air Horns

    • Air Reservoirs

    • BWTS (Ballast Water Treatment Systems)

    • Communication Equipment

    • Electrical Horns

      (12)

    CLASS APPROVED:

    IACS: CCS, DNV

    WAREHOUSES:

    • China

  • Arctic Ship Repair logo

    Year Founded: 2024

    Arctic Ship Repair ensures fast, reliable supply of genuine and OEM marine spare parts worldwide. From critical engine components to deck, electrical, and safety equipment, we source and deliver with precision. Our global network and technical expertise allow us to match exact specifications, ensuring compatibility and class compliance. Whether for planned maintenance or urgent repairs, we minimize downtime with prompt logistics and transparent tracking. Arctic Ship Repairyour trusted partner for dependable spare parts, delivered on time and ready to perform.

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

    • Automation Control Equipment & Control Units

    • BWTS (Ballast Water Treatment Systems)

    • BNWAS (Bridge Navigational Watch Alarm Systems)

    • Boat Engines

    • Boiler Automation Equipment

    • Centrifugal Pumps

    • Communication Equipment

    • Compass (Gyro & Magnetic)

      (91)

    WAREHOUSES:

    • Turkey

  • international marine office logo

    Year Founded: 2014

    Welcome to International Marine Office IMO The Integrated Partner for Maritime Offshore Excellence Welcome to International Marine Office IMO, your comprehensive strategic partner providing full-spectrum solutions across the entire maritime and offshore lifecycle. We are a globally recognized force in engineering, construction, and operational support, committed to driving efficiency and sustainability for our clients. International Marine Office IMO, a powerhouse in the global maritime sector, specializing in delivering comprehensive solutions from design to delivery and throughout the operational lifecycle of your vessel. For over than 20 years experience, IMO has been the trusted name for clients demanding reliability, innovation, and integrated service excellence. Our expertise is built upon a foundation of deep technical knowledge across all phases of the marine industry:

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

      (173)

    BRAND:

    • ALFA LAVAL

    • WARTSILA

    • Kashiwa Tech Co

    • Sung Shin Engineering

    • HYUNDAI HEAVY INDUSTRIES LTD

      (3)

    WAREHOUSES:

    • Egypt

  • SOVHAN MARINE SYNDICATE logo

    Year Founded: 1998

    Trusted exporter and reseller of genuine OEM and quality used ship spare parts. All items are carefully sourced from ship demolition yards, thoroughly overhauled, and tested to ensure reliable performance.

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

      (166)

    BRAND:

    • ALFA LAVAL

    • WARTSILA

    • Kashiwa Tech Co

    • Sung Shin Engineering

    • HYUNDAI HEAVY INDUSTRIES LTD

      (3)

    CLASS APPROVED:

    IACS: ABS, ClassNK, BV, LR, DNV, IRS

    WAREHOUSES:

    • Bangladesh

  • DIESEL PARTNERS COREA CO.LTD logo

    Year Founded: 2013

    1. marine engine spare parts 1.1. MAIN ENGINE 1.1.1. 2 stroke engine spare parts - MAN, WARTSILA, MITSUBISHI, HANSHIN etc. 1.2. AUX. ENGINE 1.2.1. 4 stroke engine spare parts - MAN Holeby, YANMAR, DAIHATSU etc. 1.3. TURBOCHARGER 1.3.1. MAN Tubocharger major components additionally IHI, MET, ABB Turbocharger etc. 1.4. GENERATOR SET 1.4.1. MARINE 1.4.2. MARINE EMERGENCY 1.4.3. STATIONARY 1.4.4. ALTERNATOR 2. AUXILIARY MACHINERIES PARTS AS PER CONTENTS IN OUR WEBSITE 3. EXPERT LOGISTICS SERVICES

    CATEGORIES:

    • Deck Seal

    • 15 PPM Monitoring Equipment

    • AIS (Automatic Identification Systems)

    • AMS (Alarm Monitoring Systems)

    • ARPA (Automatic Radar Plotting Aids)

    • AUS (Automatic Unloading Systems)

    • Accommodation Ladder Davits

    • Accomodation Ladders & Gangways

    • Air Compressors

    • Air Driven Motors

      (172)

    CLASS APPROVED:

    IACS: DNV

    WAREHOUSES:

    • South Korea

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