Specification
Types
- Type A: with contrast screen
- Type B: without contrast screen
Body
Brass
CuZn40Pb2
Contrast screen
Technopolymer (Polysulfon)
- temperature resistant up to 180 °C
- O-Ring rubber FPM (Viton®)
Identification by not black finish of the sealing ring
Information
The conical thread of the oil level sight glasses GN 743.8 makes a metallic seal possible. When tightening the conical male thread R it blocks itself with the appropriate cylindrical female thread Rp.
With the datum plane a the R-male thread has the same thread diameter as the Rp-female thread, so that it can be screwed in by hand. The strong tightening by means of a tool increases the length of engagement and seals the screw connection. Additionally a sealant (hemp or teflon band) is usually used. The R-thread is „roughened“, so that the sealant does not shift when screwing in.
