F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16J—PISTONS; CYLINDERS; SEALINGS
F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
Landscapes
Engineering & Computer Science
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General Engineering & Computer Science
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Mechanical Engineering
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Photoreceptors In Electrophotography
(AREA)
Developing Agents For Electrophotography
(AREA)
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
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