Abstract： ASME B16.20:1998 pdf download.METALLIC GASKETS FOR PIPE FLANGES. 4.2 Design 4.2.1 General. Jacketed gaskets shall be made with a filler material enclosed in a metal jacket. 4.2.2 Jacket Thickness. The jacket metal thickness shall be a minim...

ASME B16.20:1998 pdf download.METALLIC GASKETS FOR PIPE FLANGES.

4.2 Design

4.2.1 General. Jacketed gaskets shall be made with a filler material enclosed in a metal jacket.

4.2.2 Jacket Thickness. The jacket metal thickness shall be a minimum of 0.015 in.

4.2.3 Filler Thickness. The filler thickness shall be a minimum of 0.06 in.

4.2.4 Other design details, including the density of the 611cr. shall be the gaske manufacturers responsibility.

4.3 Dimensions

Gasket dimensions and tolerances shall be in accordance with Tables 21. 22, or 23.

4.4 Materials

Metal jacket and filler material shall be selected from

Table 24. For jacketed gasket limiiaiosn related to

ASME B16.5 applications. see Annes E of ASME

B 16.5.

4.5 Marking

4.5.1 Appli.d Marking. Jacketed gaskets shall be marked with waterproof Ink or equivalent Where gasket size does not permit such

markings, a separate attached marking tag may be used. The lettering height shall be a minimum of 0.2 in. The following information shall be included with the markings:

(a) Manufacturer’s name or Lradeinark,

(b) Flange size (NPS).

(c) Pressure class.

(d) Jacketed material abbreviation (Table 24), eacept that the abbreviation may be omitted when soft carbon steel is used.

(e) Filler material abbreviation (Table 24).

(f) Flange identification. Gaskets intended for ASME Bl6.47 flanges shall be marked B16,47 A or Bl6,47 B. as applicable. Gaskets intended for ASME B 16.5 flanges need not be so marked. Illustrative marking csamples are shown in Table 23..

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