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Oil level sight glasses with conical thread

Oil level sight glasses with conical thread

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 fluoropolymer band) is usually used. The R-thread is „roughened“, so that the sealant does not shift when screwing in.

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Part Number

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Part Number
743.8-11-3/8NPT-A
743.8-11-3/8NPT-B
743.8-11-R3/8-A
743.8-11-R3/8-B
743.8-14-1/2NPT-A
743.8-14-1/2NPT-B
743.8-14-R1/2-A
743.8-14-R1/2-B
743.8-18-3/4NPT-A
743.8-18-3/4NPT-B
743.8-18-R3/4-A
743.8-18-R3/4-B
743.8-24-1NPT-A
743.8-24-1NPT-B
743.8-24-R1-A
743.8-24-R1-B
743.8-32-11/4NPT-A
743.8-32-11/4NPT-B
743.8-32-R11/4-A
743.8-32-R11/4-B
Part NumberStandard Unit PriceVolume DiscountShipping Days?Thread d2 Window glass d1 Type

11.42 €

3 Days 3/8 NPT11A-with contrast screen

11.42 €

3 Days 3/8 NPT11B-without contrast screen

9.88 €

3 Days R 3/811A-with contrast screen

9.88 €

3 Days R 3/811B-without contrast screen

11.02 €

3 Days 1/2 NPT14A-with contrast screen

11.02 €

3 Days 1/2 NPT14B-without contrast screen

11.09 €

3 Days R 1/214A-with contrast screen

11.09 €

3 Days R 1/214B-without contrast screen

14.17 €

3 Days 3/4 NPT18A-with contrast screen

14.17 €

3 Days 3/4 NPT18B-without contrast screen

14.67 €

3 Days R 3/418A-with contrast screen

14.67 €

3 Days R 3/418B-without contrast screen

20.37 €

3 Days 1 NPT24A-with contrast screen

20.37 €

3 Days 1 NPT24B-without contrast screen

20.22 €

3 Days R 124A-with contrast screen

20.22 €

3 Days R 124B-without contrast screen

25.39 €

3 Days 1 1/4 NPT32A-with contrast screen

25.39 €

3 Days 1 1/4 NPT32B-without contrast screen

28.78 €

3 Days R 1 1/432A-with contrast screen

28.78 €

3 Days R 1 1/432B-without contrast screen

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