Qingdao Xindingtong New Material Technology Co., Ltd. - SYNTECH

Qingdao Xindingtong New Material Technology Co., Ltd. — operating internationally under the Xindingtong brand and accessible at xindingtong.com — is a specialist Chinese manufacturer of automotive rubber sealing products and gasket assemblies, established in August 2020 as a dedicated production expansion of Qingdao Kaitong Seals Co., Ltd., a sealing specialist with roots going back to 2000. Headquartered in Jiangshan Town, Laixi City, Qingdao, Shandong Province, Xindingtong occupies a self-owned facility of approximately 40,000 m² encompassing production workshops, laboratory buildings, office infrastructure, and staff facilities — supported by a technical team of over 30 engineers. The company obtained IATF 16949 quality management system certification in 2021, holds active environmental approvals for rubber mixing and phosphating production lines, and maintains close collaborative ties with major scientific research institutions to support an ongoing R&D programme — having received recognition as a National Key New Product and Municipal High-Tech Enterprise. Xindingtong's annual production capacity exceeds 150 million units across its rubber sealing product range, spanning O-rings, oil pan gaskets, cylinder cover gaskets, valve stem seals, bonded seals, special-shaped rubber seals, rear suspension cushions, pipe fittings, and custom rubber components for automotive, heavy machinery, and industrial applications — positioning the company as a volume-capable, certified specialist supplier for the full spectrum of engine sealing, drivetrain sealing, and structural rubber component requirements across passenger vehicles, commercial vehicles, and industrial machinery platforms.

For Indonesia's automotive aftermarket, Xindingtong addresses one of the most structurally consistent and replacement-driven component categories in the domestic vehicle parc: engine sealing components and gasket assemblies across the high-volume Japanese, Korean, and Chinese passenger vehicle and light commercial vehicle brands that dominate Indonesia's roads. O-rings, valve stem seals, oil pan gaskets, and cylinder cover gaskets are maintenance-cycle and wear-driven replacement items — required at every engine oil service interval inspection, valve train service, and engine repair event — generating continuous, high-frequency demand across Indonesia's independent workshop network, franchise service chains, and multi-brand spare parts distribution channels. Oil seal and gasket failure is one of the most common workshop diagnosis findings on ageing vehicles operating in Indonesia's high-temperature, high-humidity tropical environment, where thermal cycling, engine heat soak, and sustained operation at elevated ambient temperatures accelerate rubber compound degradation significantly beyond rates experienced in temperate climates — creating structurally higher replacement frequency than in developed markets. With annual production capacity exceeding 150 million units, IATF 16949 certification, 100% end-of-line quality testing discipline inherited from Kaitong Seals' two-decade manufacturing heritage, and a product range spanning every major rubber sealing category required in automotive engine and drivetrain systems, Xindingtong provides Indonesian spare parts importers, wholesale distributors, and workshop supply chains with a technically credentialed, volume-capable sourcing option for rubber sealing components across the Toyota, Honda, Nissan, Mitsubishi, Suzuki, Daihatsu, Hyundai, KIA, and Chinese vehicle platforms most widely operated across Java, Sumatra, Kalimantan, Sulawesi, and the outer islands.

Complimentary Listing
SEANOHA Auto Parts Catalog
H. Sealing & Gaskets — Oil Seal (Engine)

🔩 O-rings, oil pan gaskets, valve stem seals & cylinder cover gaskets — high-frequency engine sealing replacement components for Indonesia's independent workshop and spare parts distribution market

🏭 IATF 16949 certified (2021) | 40,000 m² self-owned facility | 150M+ units annual capacity | 30+ engineers | Qingdao, Shandong

Products:

O-Ring Series
Xindingtong's foundational product line: precision-moulded rubber O-rings for automotive engine, drivetrain, cooling system, and hydraulic circuit sealing applications across a broad range of passenger vehicles and light commercial vehicles. O-rings are the highest-unit-volume sealing component category in automotive maintenance and repair — required across virtually every fluid system in the vehicle including engine oil circuits, cooling system connections, fuel system interfaces, transmission sealing, and hydraulic brake and power steering circuits. Xindingtong's O-ring production covers multiple rubber compound formulations (NBR, EPDM, FKM/Viton, silicone) matched to the temperature, chemical compatibility, and pressure requirements of different automotive system environments, with dimensional coverage across the standard cross-section and inner diameter ranges used in Japanese, Korean, and Chinese vehicle platforms dominant in the Indonesian market.

Oil Pan Gasket & Cylinder Cover Gasket
Replacement oil pan gaskets and cylinder cover (cam cover) gaskets for passenger vehicles and light commercial vehicles — sealing the engine oil system at the sump and valve train cover interfaces. Oil pan gasket and cam cover gasket leaks are among the most common engine oil loss findings in workshop inspections of ageing vehicles, with replacement demand driven by rubber compound hardening and compression set at sustained high engine temperatures. Xindingtong's gasket production for these applications uses compound formulations and dimensional tooling matched to the OEM-standard interfaces of Toyota, Honda, Nissan, Mitsubishi, and other platforms widely serviced in Indonesia's aftermarket workshop and distributor channel.

Valve Stem Seal Series
Precision rubber valve stem seals for petrol and diesel engine cylinder head applications — controlling engine oil consumption at the intake and exhaust valve stem interfaces of overhead camshaft and pushrod engine designs. Valve stem seal wear produces blue smoke on start-up and high oil consumption, a commonly encountered fault on higher-mileage engines in Indonesia's passenger vehicle fleet, and is a scheduled replacement item at major engine service events. Xindingtong's valve stem seal series covers the standard rubber compound and dimensional specifications for the Japanese and Korean engine families most widely deployed in Indonesian passenger vehicles and light commercial vehicles.

Bonded Seal Series
Metal-rubber bonded seals (Dowty seals / bonded washers) for threaded fastener sealing applications in engine oil drain plugs, hydraulic fittings, and fuel system connections — providing a combined structural and sealing function in a single component. Bonded seals are a high-turnover, low-unit-value workshop consumable replaced at every engine oil service on vehicles requiring sealing washers at the drain plug, and are a standard stocking item for Indonesian multi-brand spare parts distributors and workshop supply wholesalers serving the high-frequency oil service market.

Special-Shaped Rubber Seal Series
Custom and standard special-profile rubber seals for automotive body, door, window, and underbody sealing applications — covering the full range of extruded and moulded rubber profiles used in passenger vehicle body sealing systems. Special-shaped rubber seals include door frame seals, trunk lid seals, bonnet seals, window run channels, and body cavity sealing components that degrade through UV exposure, ozone attack, and mechanical compression set in Indonesia's tropical outdoor environment, generating replacement demand in the vehicle body repair and refurbishment segment.

Rear Suspension Cushion
Rubber-to-metal bonded rear suspension cushion assemblies for passenger vehicles and light commercial vehicles — providing vibration isolation and articulation compliance at rear axle, leaf spring, and trailing arm mounting points in suspension systems. Suspension cushion degradation produces vibration transmission to the cabin, handling instability, and suspension noise, and is a common workshop replacement finding on high-mileage vehicles or vehicles operated on uneven road surfaces. Xindingtong's suspension cushion range covers the rubber-metal bonded construction used in the rear suspension architectures of Japanese and Chinese passenger vehicles and light commercial vehicles widely operated in Indonesia.

Pipe Fittings
Rubber and composite pipe fitting components for automotive fluid system connections — covering hose connectors, joining sleeves, and elbow fittings for cooling system, fuel system, and vacuum circuit piping in passenger vehicles and light commercial vehicles. Rubber pipe fittings are a workshop-level replacement component sourced through Indonesia's spare parts distribution network for cooling system repair, fuel line maintenance, and vacuum system servicing across the high-volume Toyota, Honda, and Mitsubishi platforms most widely serviced by Indonesian independent workshops.Automotive shaft seals to SAE standard dimensions for vehicle platforms with imperial specification sealing requirements

🔧 O-rings in NBR, EPDM, FKM/Viton & silicone compounds — dimensional coverage for Japanese, Korean & Chinese vehicle platforms across all automotive fluid systems

🛢️ Oil pan gaskets, cylinder cover gaskets & valve stem seals — high-frequency workshop replacement items for Toyota, Honda, Nissan, Mitsubishi, Suzuki, Daihatsu, Hyundai & KIA

🔩 Bonded seals / Dowty washers — high-turnover workshop consumable for oil drain plug sealing, sourced in volume by Indonesian multi-brand spare parts distributors

🏎️ Rear suspension cushions, special-shaped body seals & pipe fittings — full rubber component scope for vehicle maintenance, body repair, and underbody servicing

🔬 IATF 16949 certified | National Key New Product & Municipal High-Tech Enterprise recognition | Active R&D collaboration with major scientific research institutions

🌡️ Rubber compound formulations validated for high-temperature, high-humidity tropical environments — matched to Indonesia's operating conditions for accelerated seal replacement cycles

🤝 Matched to the sourcing needs of Indonesian automotive spare parts importers, multi-brand wholesale distributors, workshop supply chains, and engine repair specialists procuring O-rings, gaskets, oil seals, valve stem seals, and bonded seals for Japanese, Korean, and Chinese passenger vehicles and light commercial vehicles operated across Java, Sumatra, Kalimantan, Sulawesi, and the outer islands