1.The material of the seal is a special chrome molybdenum cast iron, the content of chrome is 15 percent and molybdenum is 1-3 percent, and other elements
2.Characteristics: high hardness, wear-resisting, anti-dirty ability, corrosion-resistant
3.Lifespan: 5000 hours and the hardness is HRC65-72,the sealing face roughness within 0.15um, flatness precision is 0.1um-0.2um
4.Specifications pressure: 0.3mpa(max.), temperature range: -50°C to 120°C
Circumferential speed: 3m/sec (max)
5.Size of the seals are various, outer diameter: from 45-1425mm
6.Our rotary seals are used in construction machinery and mining machinery,like Komatsu, Caterpillar, Hitachi, Daewoo, Kobelco, Sumitomo, Hyundai and more
(1)China bulldozer such as Shantui, Shanghai, Yellow River, Yishan and Qinggong
(2)Japan bulldozer (Komatsu): D50, D60, D80, D85, D155, D355 American bulldozer (Caterpillar): D58, D60, D7G, D8K, D9L, D10H
(3)Germany hydraulic excavator R902-R992 American CAT hydraulic excavators Japanese Komatsu hydraulic excavators
(4)Various earth moving machine and cranes, construction machinery, mining machines, and more
7.OEM and ODM welcomed, the label and package made according to buyers' request

Jinhai Machinery Parts Of Engineering &Mining Co.,Ltd(hereinafter shorted as Jinhai Corporation) was established in 1983, has 30years’ experience in floating seals production, which is the largest professional manufacturer all over China. We are located in Xiong County, Baoding City, Hebei Province. Near Beijing airport with only 120kms，Close to Daguang Highway, the traffic is very convenient.

After Jinhai corporation establishment, we adhere to the core principle of respecting customer, innovation and development, improving the concept of “made in China” in world wide, have created a famous band “JINHUA” in China floating seal industry.

Jinhai Corporation covers an area of 15,000 square meters, with more than 200employees,80CNC lathes, has effective and advanced floating seal production line from design, modeling, casting, to grinding and lapping.

Our floating seal production size ranges from 50mm outside diameters to 1425mm with more than 300models.suits for construction machineries, mining machineries, agriculture machineries, building machineries, shield machineries, and vessel manufacturing and reduction gear industries.

Jinhai Corporation formerly drafted the standard of JB/T82.93-1999 for China Floating Seal Industry. Our production capacity, production art level, production quality are advanced in domestic market and close to the international leading position. We do OEM for many famous China Machinery Companies. Such as Shantui Shares, Zoom lion, Yi Shan, Liu Gong, Shantui Oyt,  HG R&D, Hubei Sansheng, Sany Mining, Brevini Gear Reduction(Yancheng), Zhangjiakou Coal cutter Factory etc.

Jinhai Corporation started to do export since 2008, at present we successfully have exported to Asia, Europe, Australia, Africa with more than 20 countries, having established long-term relationship with our foreign customers.

We have passed ISO9001：2008 quality system certification in 2005 and in the year of 2012 we have passed ISO/TS 16949 quality system certification, we take aim at becoming the world leading-level manufacturer of floating seal industry in 5years.