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SEALING RING Marine Diesel Engine Spare Parts is a critical core sealing component for marine diesel engines. Made of high-quality wear-resistant, heat-resistant and corrosion-resistant materials, it blocks fluid leakage and keeps stable pressure inside engine assemblies. It features precise dimensional accuracy, stable structural performance and excellent fatigue resistance, suitable for routine servicing, shipyard overhaul and fault repair under marine harsh working conditions.
A well-matched sealing ring stabilizes engine operating status, prevents medium leakage and pressure loss, reduces component failure risks and equipment downtime, and ensures efficient and reliable operation of marine diesel engine units.
Please provide equipment model, specifications and part number before ordering to confirm compatibility.
SEALING RING 28/32 | Ship Diesel Engine Spare Parts
The SEALING RING 28/32 is a precision sealing component specially designed for MAN 28/32 series marine diesel engines. Installed on critical assembly joints inside the engine, this sealing ring forms a reliable barrier to prevent leakage of high-pressure gas, lubricating oil and cooling medium. It maintains stable pressure inside the working chamber, isolates different media and protects engine core parts from cross-contamination. A failed sealing ring will cause oil leakage, gas blow-by, pressure drop and overheating issues. Replacing with standard SEALING RING 28/32 restores original sealing performance and guarantees reliable continuous running of marine main and auxiliary diesel engines.
Working under harsh marine operating conditions including long-time full-load continuous operation, frequent thermal cycling, pressure fluctuation and ship salt-fog corrosion, the sealing ring will gradually produce aging, compression set, surface wear and crack after long service hours. Damaged sealing ring triggers medium leakage, increased fuel consumption and accelerated wear of matching metal components. Regular inspection and replacement of sealing ring are essential maintenance items for MAN 28/32 engine overhaul and dry-dock repair projects.
This SEALING RING 28/32 adopts optimized composite material formula with excellent compression resilience, oil resistance and high-temperature stability. It can closely fit the metal mating surface under alternating temperature and pressure, maintaining consistent sealing force without permanent deformation. It keeps stable sealing performance under variable load working conditions.
With outstanding resistance to lubricating oil, fuel oil and thermal aging, the sealing ring adapts to frequent start-stop and long-term heavy-load operation of marine power units. It effectively reduces fluid leakage, abnormal pressure loss and component failure rate, stabilizes engine operation efficiency, lowers daily maintenance costs and greatly improves the long-cycle operational safety and reliability of MAN 28/32 marine diesel engines.
The SEALING RING 28/32 is manufactured from premium heat & oil resistant composite material, specially customized for the fluctuating temperature and pressure working environment of MAN 28/34 four-stroke marine diesel engines. Precision molding process ensures uniform material density and no internal defects. Strict curing treatment minimizes permanent compression deformation to ensure long-term dimensional stability. Key contact surfaces adopt fine finishing process to improve fitting tightness. The whole manufacturing process strictly complies with MAN OEM technical requirements and universal marine diesel industry standards.
Quantified Marine-Grade Performance Parameters
Parameter | Specification | Test & Implementation Standard |
Core Material | Oil & heat resistant composite material | Raw material property inspection |
Surface Treatment | Precision molding & surface finishing | Surface smoothness inspection |
Dimensional Tolerance | OEM-level precision matching tolerance | CMM full dimensional inspection |
Mechanical Performance | High elasticity, anti-aging, low compression set | Compression rebound & aging test |
Working Temperature Resistance | Adapt to engine high & low temperature cycle | Temperature cycle stability test |
Service Feature | Oil-proof, gas-tight, wear-resistant sealing | Marine long-cycle operation simulation test |
Compliance Standard | Universal marine industrial manufacturing specifications | MAN OEM & marine diesel industry norms |
All SEALING RING 28/32 are manufactured strictly in accordance with MAN OEM engineering drawings and marine sealing component standards. Every workpiece undergoes raw material verification, molding, curing calibration, precision trimming and surface finishing. Key sealing dimensions and cross-section geometric tolerance are fully controlled to ensure perfect coordination with cylinder head, liner and other mating parts.
Each finished sealing ring passes strict pre-delivery full inspection, including dimensional accuracy detection, elasticity testing, surface defect screening and sealing matching test. All technical parameters fully match original equipment standards, supporting direct drop-in replacement without secondary processing, effectively improving engine overhaul quality and post-maintenance operational stability.
MAIN ENGINE | MAN B&W | S26MC,L/S35MC,L/S42MC,L/S50MC,L/S60MC,L/S70MC,L/S80MC,L/S90MC,S46MC-C,S50MC-C,S60MC-C,S70MC-C,S80MC-C,S90MC-C,K90MC-C,K98MC-C,K/L45GF(CA),55GF(CA),67GF(CA),80GF(CA),90GF(CA) |
WARTSILA | 6L20,9L20,8L32,R22,R32,L20,L32 | |
PIELSTICK | PC2-2,PC2-5,PC2-5L,PC2-5V,PC2-6,PA4,PA5,PA6 | |
HANSHIN | EL30-44,ELS-35,44,LH-28G,LU24-54,LUN28AR(G),LUS24-58,LF46-58 | |
NIIGATA | 16HS,16X,18CX,19HX,20AX,25BX,25CX,26AFTE,26KGHS,28AFTE,28BX,28KGHS,31EZ,31X,32CLX,34AFTE | |
SULZER | RTA38,RTA48,RTA52,RTA58,RTA62,RTA68,RTA72,RTA76,RTA84,RL(A/B)56,RL(A/B)66,RL(A/B)76, RL(A/B)90,RND68,RND76 | |
AKASAKA | A31,A34,A38,A41,A45,AH25,AH27,AH28,AH30,AH38,AH40,K28,K31,DM28FD,DM38FD,DM40FD,DM51SS | |
MITSUBISHI | UEC33LSE,UEC37LA,UEC45LA,UEC50LS,UEC52LA,UEC52LS,UEC60LS,UET45/75C,UET45/80D, UET52/90D,UET52/105H | |
AUX.ENGINE | MITSUBISHI | S6A,S6B,S6R,S6N,S16N,S16R,S12R,SA2 |
MAN B&W | 16/24,20/27,21/31,23/30,25/33,28/32,32/40,48/60,58/64 | |
YANMAR | HAL,KL,KDL,KFL,RAL,MAL,S165,S185,M200,M220,T220,T240,T260,Z280,N165,N18,N21,N165,N260,N280, N330,NY16,EY18,EY22,EY26,4CHL,6CHL | |
DAIHATSU | DK20,DK26,DK28,DK32,DL16,DL19,DL20,DL22,DL24,DL26,DL28,DL32,DS18,DS19,DS22,DS26,DS28,DS32, DS40,PK14,PK16,PL24,PL26,PS18,PS20,PS22,PS26,PS30 |
We supply full-series matching spare parts for MAN 28/32 engine overhaul, including cylinder liner, piston ring, valve seal, gasket, O-ring and complete sealing overhaul kits, providing one-stop procurement solutions for shipyards, shipping companies and marine engine maintenance suppliers.
Each batch of SEALING RING 28/32 undergoes full-process professional inspection and performance screening, including raw material property analysis, dimensional calibration, elasticity testing, surface defect detection and sealing simulation test. All inspection records are archived completely for customer review and dry-dock audit.
Manufactured in strict compliance with universal marine diesel industry norms and MAN OEM technical specifications, this sealing ring meets the requirements of daily vessel navigation and engine overhaul projects, serving as reliable replacement spare parts for marine diesel engines.
The sealing ring is a key sealing component of MAN 28/32 engine system. Long-term pressure fluctuation, thermal cycling and medium erosion will cause aging, permanent deformation and surface damage. Replace the sealing ring during major overhaul if oil leakage, gas blow-by or obvious aging is detected. Installing new standard SEALING RING 28/32 restores precise sealing performance, optimizes engine operation and protects matched metal components from secondary damage.
Regular inspection of sealing ring condition and sealing performance is an essential routine maintenance item for MAN 28/32 marine diesel engines. For vessels with long-term continuous power operation, sealing parts are prone to aging and fatigue. Timely inspection and replacement can effectively avoid medium leakage, power attenuation and excessive fuel consumption, ensuring stable and safe operation of shipboard power equipment.
Which engine does this sealing ring fit?
This sealing ring is specially customized for MAN 28/32 series marine diesel engines, also compatible with multiple mainstream marine main and auxiliary engine models listed above. Please provide complete engine model or original part number for accurate matching confirmation.
What is the delivery time?
Standard SEALING RING 28/32 are in stock with 7–10 working days fast delivery. Non-standard customized specifications support 7–15 working days production cycle.
Can you provide customized processing services?
Yes, we support OEM customization and non-standard processing according to customer drawings and samples. All customized products undergo full-dimensional inspection and sealing performance testing before shipment.
What is your warranty policy?
12-month warranty for material and manufacturing defects. We provide professional after-sales technical support including installation guidance and assembly parameter verification.
What is the MOQ and export packaging?
MOQ is 1 unit for in-stock products, with favorable bulk discount for fleet batch orders. Standard export packaging adopts anti-rust treatment, moisture-proof wrapping and solid plywood crating, adapting to long-distance ocean transportation and overseas storage.
