Seals, those fascinating beings, are generally misunderstood. To define , a seal is a ocean-dwelling mammal belonging to a group of pinniped families: Phocidae (true seals) or Otariidae (eared seals). True https://qzsealings.com/ru/hydraulic-vs-pneumatic-seals-an-engineers-guide-to-the-critical-differences/
Understanding Seals: Types, Definitions, and Applications
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