By PTFE rods, tubes, plates or by mechanical shear from turning, but also can be used powder molding. Gaskets are planar shape, V-shape, profiled such.

• 由聚四氟乙烯棒、管、板经机械车削或剪切而成，也可用粉料模压成型。垫片有平面形、V形、异形等。