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7.2.3
Spiral seals
Spiral seals according to EN 12560-2 with centering ring
ANSI 300
DN
d1
d2
in mm
in mm
in mm
(inch)
(inch)
(inch)
80
81
101.6
(3)
(3.19)
(3.98)
100
106.4
127.0
(4)
(4.19)
(5.00)
150
157.2
182.6
(6)
(6.19)
(7.19)
200
215.9
233.4
(8)
(8.5)
(9.19)
250
268.3
287.3
(10)
(10.6)
(11.31)
300
317.5
339.9
(12)
(12.5)
(13.38)
Dimensions of the seal:
d1 = Inside diameter of the centering ring
d2 = Inside diameter of the seal
d3 = Outside diameter
X = Seal thickness 1.5 to 5 mm
Fig. 7.3: Spiral seals
PN 64
d3
d1
d2
in mm
in mm
in mm
(inch)
(inch)
(inch)
120.7
86
95
(4.75)
(3.39)
(3.74)
149.4
108
120
(5.88)
(4.25)
(4.72)
209.6
162
174
(8.25)
(6.38)
(6.85)
263.7
213
225
(10.38)
(8.39)
(8.86)
317.5
267
279
(12.50)
(10.5)
(10.98)
374.7
318
330
(14.75)
(12.5)
(12.99)
7 Construction and Planning
ANSI 600
d3
d1
d2
in mm
in mm
in mm
(inch)
(inch)
(inch)
119
81
101.6
(4.69)
(3.19)
(3.98)
144
106.4
120.7
(5.67)
(4.19)
(4.75)
200
157.2
174.8
(7.87)
(6.19)
(6.88)
257
215.9
225.6
(10.12)
(8.5)
(8.88)
315
268.3
274.6
(12.40)
(10.6)
(10.81)
366
317.5
327.2
(14.41)
(12.5)
(12.88)
Manual USM GT400 · EN10 · May 2021
85
d3
in mm
(inch)
120.7
(4.75)
149.4
(5.88)
209.6
(8.25)
263.7
(10.38)
317.5
(12.50)
374.7
(14.75)
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