Double-Cone Gaskets

TYPE OF GASKET DELTA RING BRIDGMAN DOUBLE CONE LENS RING OTHER... 

Double Cone Initial seating load is created by the stress to which flie main bolts are tightened. The joints and gaskets must be machined to very high tolerances and very smooth flnishes. 

Double Cone/Fluor Double Cone 20,000 12-36 Gasket Matl Depends on configuration Lapping of groove required Use with either threaded or flanged closure... 

Like most high pressure joints, the double cone requires precision machined surfaces. In addition, proper bolt loads and tightening procedures are critical. Double cone gaskets can be used with either a bolted flat head or threaded closure type configuration. 

Figure 8-10. Threaded closure with double cone gasket...

From a design standpoint, the total hydrostatic end force, H, is taken by the threads in a threaded closure, or by the studs in other designs. Various types of gaskets can be used with either design but all are the self-sealing type such as Bridgman, delta or double cone. 

Figure 8.10 Flanged closure 1, screwbolt 2, extensometer 3, nut 4, washer 5, flange 6, doubled cone gasket 7, closure.

The individual design requirements for lens, delta, and double-cone gaskets are given in the next three sections. 

Double-cone gaskets are very popular in Europe and can be fabricated in various sizes. A typical detail is shown in Fig. 10.10. The required cross-sectional area is given by... 

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