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Class Information
Number: 277/492
Name: Seal for a joint or juncture > Seal between relatively movable parts (i.e., dynamic seal) > Piston ring or piston ring expander or seat therefor > Sectional piston ring structure > C, l, t, u, v, or z cross-sectional profile > Three or more sections
Description: Sectional piston ring wherein the sectional piston ring has at least three component rings.










Patents under this class:

Patent Number Title Of Patent Date Issued
6419234 Oil sealing ring Jul. 16, 2002
5921553 Sealing ring assembly for a single sealing ring piston Jul. 13, 1999
4090719 Packing assembly May. 23, 1978











 
 
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