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NV-1

Multiple springs mechanical seal type NV-1 is mainly used in petrochemical, oil refining and process industries. Secondary sealing on a shaft with
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NV-2

Mechanical seal type NV – 2 is very similar to seal type NV – 1. The main difference is single spring instead
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NV-3

Wave spring mechanical seal type NV – 3 is very similar to seal types NV – 1 and NV – 2.
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