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Sealing set for cylinder head is a critical core sealing assembly for marine diesel engines. Made of high-quality heat-resistant, wear-resistant and corrosion-resistant materials, it forms reliable sealing between cylinder head and cylinder block to prevent leakage of gas, cooling water and lubricating oil. 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 set for cylinder head stabilizes engine working condition, avoids medium leakage and engine malfunction, reduces component failure risks and equipment downtime, and ensures efficient and reliable operation of marine engine units.
Please provide equipment model, specifications and part number before ordering to confirm compatibility.
DS18 Sealing Set for Cylinder Head | Machinery Accessories
The DS18 Sealing Set for Cylinder Head is a complete combined sealing kit specially designed for DAIHATSU DS18 series marine diesel engines, including 6DS18 and 8DS18 models. This sealing set integrates cylinder head gasket, O-rings, sealing washers and various auxiliary gaskets, serving as the core sealing assembly between cylinder head and engine block. It reliably seals combustion gas, cooling water and lubricating oil passages, preventing gas blow-by, coolant leakage and oil seepage under working pressure and temperature variation. It maintains stable sealing integrity under continuous load changes, protecting internal engine components and sustaining normal combustion state. Aged, cracked or compressed sealing set will cause gas leakage, water-oil mixing, power loss and cylinder corrosion. Replacing with standard DS18 Sealing Set for Cylinder Head restores multi-channel sealing performance and guarantees safe and stable operation of DAIHATSU DS18 marine diesel engines.
Working under harsh marine operating conditions including long-time full-load continuous navigation, cyclic temperature fluctuation, combustion pressure impact and cabin salt-fog corrosion, the sealing set will gradually suffer gasket aging, elastic attenuation, surface cracking and seal failure after thousands of operating hours. Damaged sealing set leads to cooling system failure, oil contamination and accelerated wear of cylinder components. Regular inspection and replacement of cylinder head sealing set are essential routine maintenance and dry-dock overhaul items for DAIHATSU DS18 marine diesel engines.
This dedicated DS18 cylinder head sealing set adopts composite multi-layer sealing materials with excellent heat resistance and compression rebound property. Each gasket and sealing ring is precisely cut and processed to match the installation contour of DAIHATSU DS18 cylinder head. It can maintain stable compression and sealing effect under repeated thermal cycling and combustion pressure impact, effectively isolating combustion chamber, water channel and oil channel to avoid medium cross-leakage.
With outstanding anti-aging performance and marine salt fog corrosion resistance, the sealing set adapts to complex and variable ship operating conditions including frequent start-stop, variable load operation and humid salt-fog cabin environment. It effectively reduces cylinder head sealing system failure rate, lowers daily maintenance and overhaul costs, and greatly improves the operational safety, stability and service cycle of DAIHATSU DS18 marine diesel engines.
The DS18 Sealing Set for Cylinder Head is manufactured from premium high-temperature composite and fluorine rubber materials, specially customized for high temperature, pressure and salt-fog environment of DAIHATSU DS18 marine diesel engine. Each sealing part is formed by precision cutting and surface reinforcement treatment, eliminating internal material defects. Strict compression rebound test ensures no permanent deformation under long-term clamping force. Key sealing surface adopts surface coating treatment to improve heat resistance and anti-adhesion performance. The whole production process fully complies with DAIHATSU OEM technical standards and universal marine diesel industry manufacturing specifications.
Quantified Marine-Grade Performance Parameters
Parameter | Specification | Test & Implementation Standard |
Core Material | Multi-layer composite sheet, fluorine rubber, metal reinforced gasket | Raw material spectrum component inspection |
Surface Treatment | Heat-resistant coating, anti-adhesion surface finishing | Compression rebound & heat aging inspection |
Dimensional Tolerance | OEM-level outline & hole position tolerance | CMM full-dimensional precision detection |
Mechanical Performance | Pressure resistance, compression recovery, anti-blowout | Pressure tightness & thermal cycle test |
Working Stability | High temperature resistant, anti-aging, salt fog resistant | High temperature thermal cycle simulation test |
Service Feature | Integrated kit, seal gas, coolant and lubricating oil | Engine assembly matching test |
Compliance Standard | Universal marine industrial manufacturing specifications | DAIHATSU OEM & marine diesel industry norms |
All DS18 Cylinder Head Sealing Sets are manufactured strictly in accordance with DAIHATSU OEM engineering drawings and marine engine cylinder head sealing component standards. Every finished kit undergoes raw material verification, precision cutting, heat resistance calibration and surface inspection. Key hole position, gasket thickness, rubber hardness and compression performance are fully controlled to ensure perfect matching with DS18 cylinder head and cylinder block.
Each sealing set passes strict pre-delivery full inspection, including full dimensional calibration, surface defect screening, pressure tightness test and assembly matching test. All technical parameters completely match original equipment standards, supporting direct drop-in replacement without secondary processing, effectively preventing medium leakage and improving post-overhaul 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 DAIHATSU DS18 engine cylinder head overhaul, including cylinder head bolt, valve seat, valve guide, exhaust valve, sealing ring and complete engine overhaul kits, providing one-stop procurement solutions for shipyards, shipping companies and marine engine maintenance suppliers.
Each batch of DS18 Cylinder Head Sealing Sets undergoes full-process professional inspection and performance screening, including raw material spectrum analysis, metallographic structure detection, full dimensional calibration, pressure tightness test and heat aging test. All inspection data and test records are completely archived for customer review and ship dry-dock overhaul audit.
Manufactured in strict compliance with universal marine diesel industry norms and DAIHATSU OEM technical specifications, this sealing set fully meets the operational demands of daily ship navigation and engine overhaul projects, serving as high-quality matching replacement parts for marine ship diesel engines.
The cylinder head sealing set is a core multi-medium sealing assembly of DAIHATSU DS18 marine diesel engine. Long-term combustion pressure impact, high-temperature thermal cycling and marine salt-fog corrosion will cause gasket aging, elastic loss and gas/oil/water leakage. Replace the sealing set during major overhaul if gasket deformation, crack or medium leakage is detected. Installing new standard DS18 Sealing Set for Cylinder Head restores reliable multi-channel sealing, prevents gas blow-by and water-oil mixing, and protects cylinder head and cylinder block from thermal and corrosion damage.
Regular inspection of cylinder head sealing surface for leakage is an essential dry-dock maintenance work for DAIHATSU DS18 marine diesel engines. Long-term continuous operation will cause aging and compression attenuation of sealing components. Timely inspection and replacement can effectively avoid combustion gas leakage, coolant loss and oil contamination, eliminating hidden operational risks and ensuring stable and safe operation of ship power equipment.
Which engine does this sealing set fit? This sealing set is specially customized for DAIHATSU DS18 series marine ship diesel engines (6DS18,8DS18), 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 DS18 Cylinder Head Sealing Sets 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 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 oil treatment, moisture-proof wrapping and solid plywood crating, adapting to long-distance ocean transportation and overseas storage.
