Oil seal Mudblock MUD11 SKF - is a new generation of a bidirectional cassette seals, developed for oil and grease lubricated heavy-duty applications in harsh environments and tough operating conditions. 

Characteristics and advantages:

• half-metal/half-rubber outside diameter;
• axial and auxiliary radial lips for contaminant exclusion;
• multi-lip seal design;
• spring-loaded main sealing edge;
• Integrated wear sleeve;
• nitrile rubber specially developed by SKF.

Garter spring material - s carbon steel according to DIN 17223 and EN 10270 (Standard specification for steel wire for mechanical springs). Sleeve insert material - is low carbon steel according to EN 10130 and EN 10139 for cold stamping.

NBR - nitrile rubber (or butadiene-nitrile rubber) - the material most often used in seals production. It is resistant to: liquid fuel (gasoline, diesel fuel, fuel oil), most mineral oils and plastic lubricants based on them, vegetable oils and animal fat, low and high temperatures.