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Ceramic seal with diameter 13mm and alumina-carbon rings.
The use of alumina in Roten 3 Ceramic Se als instead of steatite, allows a much wider use, making it resistant to corrosion, erosion and abrasion.
Usually, the Roten 3 Ceramic Seal D.13mm is supplied with a right spring, but it is also possible to request it with a left spring.
Data Sheet Ceramic Sealing Roten 3 D.13mm