Structure The Kobelco Compact Seal(CX type, DX type) is composed of three types of metal rings (flange ring, intermediate ring, and cover ring), assembled by bolts. These metal rings form a casing, and the sealing rings are tightly fixed between metal rings. The metal rings are in contact with each other, which assures that the compression of the sealing rings is always maintained to the proper degree, preventing the risk of cracks occurring by excessive pressure on sealing rings. These sealing rings are all identical in design, and normally an aft seal is equipped with three sealing rings and a forward seal with two sealing rings.

Features 1)Best sealing ring design through highly advanced technologies The Kobelco Compact Seal (CX type, DX type) gives excellent sealing performance, easy handling, and stable quality over a long period of time, by utilizing the latest design technology and specially developed sealing ring shape and material. 2)A sealing ring material with superb durability The sealing rings come in two kinds of materials - Viton (fluroric rubber) and NBR (nitrile-butadiene rubber) - for selection depending on the operating conditions of stern tube seal. The Viton sealing ring fitted on the Compact Seal has superb heat resistance, with a special fabric vulcanized on its surface to assure high strength and durability. With its superior structure, the Viton sealing ring features the important property of being free from the danger of crack generation under heavily loaded conditions. 3)A chrome steel liner with superior abrasion and corrosion resistance A special grade of high-chromium stainless steel newly developed by Kobe Steel is used for this liner. (Patent No. 5736974) This new chrome steel liner is far superior to conventional chrome liners in its abrasion and corrosion resistance, and is highly effective when used as the aft liner where pitting corrosion is liable to occur. 4)Repeatedly machinable liner Our chrome steel liners are provided with a sufficient machining allowance, so that the worn-out liner can be repeatedly reused after grinding.