Grundfos SE1 - Page 38

Pos. Designation Material
DIN W.-Nr./
EN standard
522 Bracket for WIO sensor
524 Rubber bush NBR rubber
524a Disc Springs
Grey cast iron is manufactured according to EN 1561:1997.
Cast stainless steel is manufactured according to EN 10283:2010.
Conversion to other standards such as AISI/ASTM is normative, and products are not manufactured according to these.
14.3.1 Material variants
Position Description
Material Variant
Q R D
Bolts and washers A2-70 A4-70 EN 1.4539
O-Rings NBR FKM FKM
Polyolefin Cable Protection No Yes Yes
48 Seal Ring EN1.4301 EN1.4401 EN 1.4539
49 Impeller EN 1.4408 EN 1.4408 EN 1.4517
49C Wear Ring EN 1.4301 EN 1.4401 EN 1.4539
50 Volute EN-GJL-250 EN 1.4408 EN 1.4517
58 Cover for oil Chamber EN-GJL-250 EN 1.4408 EN 1.4517
92 Clamp EN 1.4401 / EN 1.4408 EN 1.4401 / EN 1.4408 EN 1.4539 / EN 1.4517
105 Shaft seal EN 1.4408 / NBR EN 1.4408 / FKM EN 1.4539 / FKM
151 Motor Top EN-GJL-250 EN 1.4408 EN 1.4517
150 Motor Sleeve EN 1.4301 EN 1.4301 EN 1.4539
155 Intermediate flange EN-GJL-250 EN 1.4408 EN 1.4517
157 Corrugated Spring Inconel X750 Hastelloy C-276 Hastelloy C-276
172 Shaft with rotor 1.0533 / EN 1.4462 1.0533 / EN 1.4462 1.0533 / EN 1.4462
190 Lifting handle EN 1.4301 EN 1.4408 EN 1.4517
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English (US)