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 and industrial rubber sealing products and gasket assemblies, established in August 2020 as a dedicated production expansion of Qingdao Kaitong Seals Co., Ltd., a sealing technology company with roots going back to 2000, and headquartered in Jiangshan Town, Laixi City, Qingdao, Shandong Province. Xindingtong occupies a self-owned facility of approximately 40,000 m² encompassing dedicated production workshops, laboratory buildings, and office infrastructure, supported by a technical team of over 30 engineers, and obtained IATF 16949 quality management system certification in 2021 — achieving National Key New Product and Municipal High-Tech Enterprise recognition through an ongoing R&D programme conducted in collaboration with major scientific research institutions. Annual production capacity exceeds 150 million units across Xindingtong's rubber sealing product range, spanning O-rings in NBR, EPDM, FKM/Viton, and silicone rubber compound formulations, oil pan gaskets, cylinder cover gaskets, valve stem seals, bonded seals, special-shaped rubber seals, rear suspension cushions, and pipe fittings — across multiple rubber compound formulations matched to the chemical compatibility, temperature, and pressure requirements of automotive, agricultural machinery, and industrial engine sealing environments. The same rubber sealing components that Xindingtong produces for automotive and construction machinery engine overhaul applications are directly applicable to the diesel engine families deployed in Indonesian agricultural tractors, combine harvesters, irrigation pump engines, and plantation power units — making the company a naturally fit cross-catalog supplier for the agricultural machinery spare parts segment without requiring any product development beyond the existing manufacturing scope.

For Indonesia's agricultural machinery sector, Xindingtong's rubber sealing product range addresses one of the most technically fundamental and consistently demanded spare parts categories across the diesel engine maintenance lifecycle of the agricultural machinery fleet: O-rings, oil pan gaskets, cylinder cover gaskets, and valve stem seals for the scheduled service and overhaul events on the diesel engine families powering Indonesian tractors, combine harvesters, rice transplanters, power tillers, irrigation pump engines, and plantation support vehicles. Every cylinder head overhaul, every engine top-end rebuild, and every scheduled high-hour major service event on an agricultural diesel engine requires replacement of engine sealing components — oil pan gaskets to restore sump sealing integrity, cylinder cover gaskets to reseal the valve train cover, valve stem seals to restore oil consumption control at valve stem-to-guide interfaces, and O-ring sets for engine cooling system fittings, fuel system connections, and hydraulic circuit interfaces disturbed during service. In Indonesia's tropical operating environment, sustained high engine temperatures, high-humidity ambient conditions, and variable fuel and lubricant quality in remote plantation and farm locations accelerate rubber compound degradation on agricultural engine sealing components significantly beyond temperate-climate service life — creating earlier-than-expected replacement demand and higher replacement frequency that makes reliable, quality-certified rubber sealing supply a structurally recurring procurement requirement for Indonesian agricultural machinery dealers, plantation maintenance workshops, and cooperative engine overhaul operations. Xindingtong's IATF 16949-certified production, 150-million-unit annual capacity, multiple rubber compound formulation capability across NBR, EPDM, FKM, and silicone, and proven product performance validation in high-temperature, high-humidity tropical environments positions the company as a technically credentialed, volume-capable agricultural engine sealing supplier accessible through SEANOHA's Agricultural Machinery Catalog.

Complimentary Listing
SEANOHA Agricultural Machinery Catalog
J. Spare Parts, Filters & Consumables — Tractor Engine Parts

🔩 O-rings, oil pan gaskets, cylinder cover gaskets & valve stem seals — essential rubber sealing components for agricultural diesel engine scheduled service, top-end overhaul & engine rebuild programs

Products:

O-Ring Series — Agricultural Diesel Engine & Hydraulic System Applications
Precision-moulded rubber O-rings in NBR, EPDM, FKM/Viton, and silicone compound formulations across the full cross-section and inner diameter range used in agricultural diesel engine cooling systems, fuel system connections, hydraulic circuit interfaces, and engine oil system sealing positions. O-rings are the highest-unit-volume rubber sealing component in agricultural machinery maintenance — consumed across every fluid system in the tractor and harvester including engine cooling hose connections, fuel filter head sealing, hydraulic pump port O-rings, control valve body sealing, and engine oil circuit fitting interfaces. Compound formulation matching is critical for agricultural engine O-ring applications: NBR for engine oil and hydraulic oil sealing, EPDM for cooling system and brake fluid applications, FKM/Viton for high-temperature exhaust-adjacent and fuel system positions on turbocharged agricultural diesel engines — Xindingtong's multi-compound production capability provides Indonesian agricultural machinery maintenance workshops and plantation spare parts procurement teams with the compound-specific O-ring sourcing required for technically correct agricultural diesel engine sealing across all fluid system positions on the tractor and harvester platforms most widely operated in the Indonesian market.

Oil Pan Gasket & Cylinder Cover Gasket — Agricultural Engine Service
Replacement oil pan gaskets and cylinder cover (cam cover/rocker cover) gaskets for the diesel engine families deployed in Indonesian agricultural tractors, combine harvesters, rice transplanters, and plantation support vehicles — providing the static sealing required at engine sump and valve train cover interfaces during scheduled oil service events and valve train maintenance procedures. Oil pan gasket replacement is performed at every engine oil sump removal event — including major engine overhaul, oil pump replacement, and sump crack repair — as well as at first indication of sump gasket oil leakage, which is a common workshop finding on high-hour agricultural diesel engines where rubber compound hardening from sustained thermal cycling reduces gasket sealing compression and allows oil seepage at the gasket interface. Cylinder cover gasket replacement is a standard service item at scheduled valve clearance adjustment intervals and cylinder head removal events on overhead-valve and overhead-camshaft agricultural diesel engines. Xindingtong's gasket production for the Yanmar, Kubota, Changchai, Dongfeng, Weichai, and Lovol diesel engine families most widely serviced in Indonesian agricultural machinery workshops provides direct OEM-interface-fit sealing components for the engine platforms most frequently encountered in Indonesia's tractor dealer and plantation maintenance overhaul programs.

Valve Stem Seal Series — Agricultural Diesel Engine Cylinder Head
Precision rubber valve stem seals for the cylinder head valve train assemblies of agricultural diesel engines — controlling oil consumption at intake and exhaust valve stem-to-guide interfaces under sustained high-temperature, high-cycle field operation conditions on Indonesian agricultural machinery. Valve stem seal replacement is performed as part of complete cylinder head overhaul on high-hour agricultural engines and is a standard procedure at major engine rebuild events alongside valve, valve guide, and cylinder head gasket renewal. The accelerated oil consumption and blue exhaust smoke produced by worn valve stem seals on Indonesian agricultural diesel engines — operating at sustained full load in high ambient temperatures during harvest and cultivation peak periods — triggers earlier-than-expected seal replacement demand and makes valve stem seal supply a consistent component of the agricultural engine overhaul parts set sourced through Indonesian tractor dealer and plantation maintenance workshop channels. Xindingtong's valve stem seal range in NBR and PTFE-tipped compound variants covers the dimensional and compound specifications for the agricultural diesel engine valve train families most commonly overhauled in the Indonesian agricultural machinery aftermarket.

Bonded Seals & Special-Shaped Rubber Seals — Agricultural Machinery Applications
Metal-rubber bonded seals (Dowty seals / bonded washers) for threaded sealing applications at engine oil drain plugs, hydraulic fitting connections, and fuel system unions on agricultural tractors and plantation machinery — consumed at every oil service event on agricultural engines requiring drain plug sealing washers, and at every hydraulic fitting disturbed during service or repair. Special-shaped rubber seals and pipe fitting rubber components cover the agricultural machinery-specific sealing requirements beyond standard O-ring and gasket applications — including tractor-specific hydraulic hose connector seals, irrigation pump pipe fitting rubber gaskets, and plantation vehicle bodywork sealing applications where standard automotive profiles may not match the dimensional requirements of agricultural equipment interfaces.

🔧 O-rings in NBR, EPDM, FKM/Viton & silicone — full compound and dimensional coverage for agricultural diesel engine cooling, fuel system, hydraulic circuit & oil system sealing across Indonesian tractor and harvester platforms

🛢️ Oil pan gaskets & cylinder cover gaskets — static engine sealing components for scheduled service, sump removal & cylinder head overhaul events on Yanmar, Kubota, Changchai, Dongfeng, Weichai & Lovol agricultural diesel engines

🌡️ Valve stem seals — oil consumption control at valve train interfaces on high-temperature, high-hour tropical field-operated agricultural diesel engines in Indonesia

🔩 Bonded seals — engine drain plug sealing washers consumed at every tractor and harvester oil service | Hydraulic fitting sealing for agricultural maintenance

⚙️ IATF 16949 certified | 150M+ units annual capacity | Multiple rubber compound formulations — NBR, EPDM, FKM, silicone | Validated for high-temperature, high-humidity tropical environments

🏭 Est. 2020 | Qingdao Kaitong Seals heritage since 2000 | 40,000 m² Laixi, Shandong facility | 30+ engineers | National Key New Product recognition

🤝 Matched to the sourcing needs of Indonesian agricultural machinery dealers, plantation maintenance procurement teams, tractor cooperative spare parts supply units, and agricultural engine overhaul workshops procuring O-rings, oil pan gaskets, cylinder cover gaskets, valve stem seals, and bonded seals for diesel tractor, combine harvester, rice transplanter, power tiller, irrigation pump engine, and plantation support vehicle engine service and overhaul programs across Java, Sumatra, Kalimantan, Sulawesi, Papua, and Nusa Tenggara