ICS 23.040.80Dichtringe
In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker.
Foreword
This standard has been prepared by Technical Committee Rohrverschraubungen  of the Normenausschuss Rohrleitungen und Dampfkesselanlagen  (Pipelines and Pressure Vessels Standards Committee).
Amendments
This standard differs from the November 1994 edition as follows:
a)The dimensions and mass of ring seals and gaskets which are not to be used for new designs are now dealt with in Appendix A.
b)Dimension r 1 has been specified for type C gaskets.
c)Dimension d 1 has been corrected for gaskets of nominal size 21×26.
d)The specifications for service temperatures have been amended (cf. table 3).e)The standard has been editorially revised.Previous editions
DIN 7603: 1936-07, 1941x-05, 1961-01, 1961-09, 1968-03, 1994-11.
DEUTSCHE NORM May 2001
7603
{
Continued on pages 2 to 10.
Ring seals and gaskets
Translation by DIN-Sprachendienst.
In case of doubt, the German-language original should be consulted as the authoritative text.
All dimensions are in millimetres.
1Scope
This standard specifies dimensions and materials for ring seals and flat or filled gaskets designed for use with compression couplings (e.g. as specified in DIN 3850 or DIN 7601) or pipe plugs (as specified in DIN 908).
2
Normative references
This standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies.
DIN 908Hexagon socket screw plugs with parallel screw thread DIN 3850Compression couplings –Overview
Supersedes
November 1994 edition.
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DIN 7603:2001-05
DIN 7601Compression couplings with ball-type nipples –Overview DIN 7737Vulcanized fibre products –Types
DIN EN ISO 6506-1Metallic materials –Brinell hardness test –Part 1: Test method (ISO 6506-1:1999)
3Dimensions and designation
The designs shown are for illustrative purposes only, but the dimensions of rings seals and gaskets shall be as specified.
editorially
Type A Flat gasket
Type C Filled gasket
Type D O-ring
1)
r 1=h /2.
Figure 1: Gasket and ring seal dimensions (notation)
Designation of a type A gasket (A) of nominal size 16×20, made of vulcanized fibre (Vf):
Gasket DIN 7603–A 16××
20–Vf 1
)
Approx. sheet
thickness: 0,3mm.1
)
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Table 1:Gasket and ring seal dimensions
Nominal size
Type A
Type C
Type D
Material
e Maxi-mum size
(continued)
1)These sizes are particularly suitable for use with air brakes (materials: Zn and Vf).
d 2
d 1r 2
h
1)
1)
1)
1)
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Nominal size
Type A
Type C
Type D
Material
e Maxi-mum size
d 2
d 1r 2
h
Table 1 (continued)
(continued)
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Nominal size
Type A
Type C
Type D
Material
e Maxi-mum size
d 2
d 1r 2
h
Table 1 (concluded)
Table 2:Mass
Mass per 1000 units, in kg (t 25%)1)Nominal size
Type A Type C
Type D
1)
Mass calculated taking the density as 1,8kg/dm 3 for FA 1,3kg/dm 3 for Vf 2,7kg/dm 3 for A l 7,85kg/dm 3 for St
8,9kg/dm 3 for Cu 1,2kg/dm 3 for asbestos-free filler material (type C)7,14kg/dm 3 for Zn Page 5
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