U-cup Oil Seal Rings USH UPH Piston Hydraulic Rod NBR Rubber Oring Height 5-12mm. Type : USH UPH. Material : NBR Rubber. Height : 5mm 6mm 8mm 9mm 10mm 12mm. piston or piston rod can get a good seal. state has a good U-shaped seal is the most commonly used oil seal in hydraulic cylinder, is a typical lip seal, whether used for.
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