Seals with springs in metal case

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

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

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