FIELD: sealing engineering.
SUBSTANCE: flat space comprises at least one metallic layer provided with at least one through opening. The collar is formed around the through opening. The metallic layer in the region of the collar from its side is made of a wavy or toothed profile. The layer with the profile is made of spring steel or steel deformable in the cold condition. The steel is hardened with the subsequent cooling. The method of making the spacer is presented.
EFFECT: enhanced reliability and simplified making.
28 cl, 26 dwg
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