Emerson Fisher LR128 - Page 16

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LOCATE INK CODE
BETWEEN RADII
MATERIAL
INK CODE
MANUFACTURER
CODE
THICKNESS INK CODE (USE
ONE LOCATION ONLY)
DOME IDENTIFICATION
ELASTOMER/FABRIC
MATERIAL CODE
THICKNESS
CODE
YEAR OF MANUFACTURE
RADIAL LOCATION
TO LOCATE
IMPRINT CODE
Table 9. Diaphragm Imprint Codes
Table 10. Diaphragm Material Selection Information
CRITERIA
17E68 NITRILE (NBR)
(STANDARD)
17E97 NITRILE (NBR) 17E88 FLUOROCARBON (FKM)
Liquid Temperature -20 to 150°F / -29 to 66°C 0 to 150°F / -18 to 66°C 0 to 250°F / -18 to 121°C
(1)
General Applications
Best for low pressure di󰀨erential
and cold temperature
service applications.
Best for abrasive or
erosive service applications.
Best for high
temperature applications.
Heavy Particle Erosion Fair Excellent Good
1. Fluorocarbon (FKM) is limited to 200°F / 93°C in hot water.
THICKNESS MATERIAL
DIAPHRAGM MATERIAL
Imprint Ink Code Imprint Ink Code
2 130
2 17E68 17E68 – Nitrile (NBR) (Low di󰀨erential)
4 17E88 17E88 – Fluorocarbon (FKM) (High temperature)
5 17E97 17E97 – Nitrile (NBR) (High erosion resistance)
Figure 10. Diaphragm Markings
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Type LR128