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Stern Tube Seal Suppliers

Stern tube seals are a vital part of any ship’s propulsion system. They form a watertight barrier between the ship’s hull and the propeller shaft, preventing seawater from entering the vessel while keeping lubrication oil inside the stern tube. Without reliable sealing, vessels risk not only serious mechanical failure but also environmental violations due to leakage.

There are different types of stern tube seals used depending on the vessel’s configuration and operating environment. Common variations include lip-type seals, face seals, and air-type systems. Some offer fully enclosed oil-lubricated setups, while others support environmentally friendly water-lubricated designs. Each option comes with its own maintenance demands, wear patterns, and compatibility considerations.

For compliance and performance, all stern tube sealing systems must meet classification society requirements, such as DNV, ABS, or Lloyd’s Register. These approvals ensure the materials used can withstand pressure, temperature, vibration, and long intervals between drydockings. Selecting the right seal design is often a balance between technical specs, operating conditions, and class notations.

With so much riding on a single component, shipowners and superintendents can’t afford to guess when sourcing spares or replacements. Choosing reputable stern tube seal suppliers means getting parts that fit correctly, perform reliably, and meet certification needs. The wrong seal doesn’t just cost time - it risks compliance, cargo, and safety.

Instead of sorting through uncertain options, let Records Marine guide you to proven suppliers who understand your needs. Our platform connects you directly with trusted stern tube seal suppliers who understand the realities of marine operations. Whether you're retrofitting a single shaft or sourcing seals for an entire fleet, our experts make it easier to find verified, compliant solutions fast.

Company Focus Marine Ltd. logo

Verified

Year Founded: 2020

Focus Marine Ltd.

We supply marine spare parts as our core business from our reliable partners/makers all over the World. Our parts are equivalent products NON-GENUINE unless otherwise stated. A part of scope of supply mentioned below as per engine types. 5L16/24, 5L21/31, 6L23/30H, 8L23/30, 5L28/32H, 7L32/40, 16V32/40-Non CD 16V32/40-CD, 6S60 MC-C, 7S60MC-C Mk7 6N18AL-V, 6N21AL-SV, 6DK20 TC : TCA66, TCA44, NR34/S148, NR20/R, RH183, TPL67-C33 SPARE PARTS : 2/4 STROKE ENGINE SPARE PARTS - MAN BW MAN SULZER WARTSILA KOBE AKASAKA DAIHATSU YANMAR HANSHIN HIMSEN - CUMMINS TURBOCHARGERS - IHI, MITSUBISHI, MAN, NAPIER, ABB, KBB AIR COMPRESSORS - TANABE, YANMAR, SPERRE, SAUER, TEIKOKU, TAMROTOR SEPARATOR - ALFA LAVAL, WESTFALIA, MITSUBISHI PUMPS - ALLWEILER, NANIWA, DESMI, SHINKO, TEIKOKU, ISHII, SHIN SHIN PHE SPARE PARTS - SWEP, TRANTER, SONDEX, ALFA LAVAL, GEA, APV, HISAKA FILTERS - BOLL KIRCH, MOATTI



info@focusmar.com


Company NEW CHANNEL CHINA INTERNATIONAL CO LTD logo

Verified

Year Founded: 2010

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


Company ShangHai seallock marine service Co.,Ltd logo

Verified

Year Founded: 2016

Stern tube Seal rings 155 to 1180 mm Suitable for all common shaft speeds and vessel draughts Seawater-proof stainless steel and hastelloy springs Are available for all major OEM makers Liners 155 to 1180 mm High-quality chrome steel to reduce wear Can fit any type of inboard or outboard lip-type seal Distance rings 155 to 1180 mm For installation between stern tube and aft seal housing Extends the lifetime of a liner Shifting sealing ring to a new working position


Company Zava Marine Corporation logo

Year Founded: 2022

Expert manufacturers of industrial equipment and spare parts, delivering precision-engineered, durable solutions for machinery, automotive, aerospace, and heavy industries. Custom fabrication, OEM/aftermarket parts, and global supply chain support


Company OPNCO MARINE SERVICE AND TRADING CO. logo

Year Founded: 2021

OPNCO is a global marine supplier specializing in spare parts for engines, turbochargers, purifiers, pumps, compressors, hydraulics, electrical, automation, and bridge systems. Large stock in China with fast worldwide delivery. We supply genuine, OEM, and reconditioned parts for the worlds top marine brands: MAN, Wartsila, Daihatsu, Yanmar, Mitsubishi, Hyundai, MAK, Niigata, Hanshin, Deutz, Scania, Cummins, Volvo Penta, Caterpillar CAT, MTU, ABC, Detroit Diesel, SKL, ABB, Napier, KBB, MAN TCR, MET. Alfa Laval, Mitsubishi, Westfalia. Sperre, Hamworthy, Taiko Kikai, Shinko, IMO, Allweiler, Desmi, Iron, Naniwa, RWO, Heishin, Azcue, Tanabe. Bosch Rexroth, Kawasaki, Hatlapa, MacGregor, Hydrokor, Liebherr. Woodward, Siemens, Schneider Electric, Danfoss, Autronica,Fuji Electric, Mitsubishi Electric. Furuno, JRC, Kongsberg, Consilium, Tokyo Keiki, SAM Electronics, Raytheon, Navico.


Company Veins Marine Engineering Solution logo

Year Founded: 2010

Veins Marine Engineering Solution VMES is a marine service company operating from Chittagong, Bangladesh, offering complete technical assistance for commercial and international vessels. Our services cover everything from propulsion system repair, hydraulic and automation diagnostics, to electrical and navigational equipment servicing. We also provide high-quality marine supplies, including safety gear and essential provisions. With practical field experience and a results-driven approach, VMES helps shipowners and operators ensure vessel performance, safety, and compliancewhether at anchorage or offshore.


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Zephyr Group srl operates warehouses in Italy, Spain, Germany, the Netherlands, and Singapore, managing a stock of over 40 million spare parts. They supply components suitable for major engine brands like Wärtsilä, MAN, Sulzer, MAK, SEMT Pielstick, and Bergen.


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With 35+ years in the industry, GMT’s Spare Parts Division supports vessel owners and operators with a wide range of components for both new and existing systems. Through their OEM partnership alliance network, they provide reliable parts at competitive prices, delivered directly to the client’s door.


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Wärtsilä offers over 100,000 marine products in stock, with genuine parts designed for safety, reliability, and long-term performance. Their components help operators reduce risks, avoid non-compliance, and keep critical systems running confidently.


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Year Founded: 1946

UQP supplies genuine and OEM spare parts from trusted international manufacturers. They work closely with suppliers like KET Marine and Turbo Service International, ensuring access to high-quality parts - even for older or niche systems. Their experience in matching parts to vessels makes the difference, especially when downtime isn’t an option.