I. Performances and Purpose With double lips, dust ring FC is dust-proof and oil-proof. It is widely app-lied to oil cylinder and air cylinder. II. Materials Imported Polyurethane(PU) III. Working Conditions Working temperature:-35~+100℃; Working media:hydraulic oil, mineral oil base; Reciprocating speed:≤1.2m/s。 IV. Design Standard At design, reference may be made to GB/T10708.3-2000, Model Sharm banDA22 and Merkel’s PU11 series. V. Labeling and Ordering Dust ring FC is labeled with ordering number, for example:FC-1824 PU