FIELD: machine building.
SUBSTANCE: sealing ring comprises an extruded thermoplastic rod. The rod has a welded connection of ends with relative extension in case of welded joint break in the amount of at least 3%, measured in accordance with ASTM D638, and not having cavities with length of more than 0.4 mm.
EFFECT: sealing ring has high strength and stability.
14 cl, 10 dwg, 10 tbl, 9 ex
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