Standardized
mechanical seals
EFK 100-M Short
length, unbalanced, internal, multiple spring
EFK 200-M Short length, balanced, internal,
multiple spring
EFK 800-S Short length, unbalanced,
internal, single spring
EFK 900-S Short length, balanced, internal,
single spring
EFKS 102-M Short length, unbalanced,
internal, multiple spring
EFN 100-L(R) Normal length, unbalanced,
single spring, depends on direction of rotation
EFN 300-M Normal length, unbalanced,
external, PTFE bellow, multiple spring
EFN 450-L(R) Normal length, unbalanced,
metal carbide, single spring, depends on direction of rotation
EFN 600-M Normal length, unbalanced,
external, multiple spring
EFN 700-M Normal length, balanced,
external, multiple spring
EFN 800-M Normal length, unbalanced,
internal, multiple spring
EFN 900-M Normal length, balanced,
internal, multiple spring
EFA 100-L(R) Unbalanced, internal,
single spring, depends on direction of rotation
EFA 450-L(R) Unbalanced, internal,
metal carbide, single spring, depends on direction of rotation
EFO 183-S Unbalanced, internal, single
spring, rubber bellow 
EFS 163-S Short length, unbalanced,
internal, single spring, rubber bellow
EFB 170-S Unbalanced, internal, metal
bellow
EFT 100-L(R) Unbalanced, internal,
single spring, depends on direction of rotation
EFP 100-M Short length, unbalanced,
multiple spring
EFKD 100-100-M Unbalanced (balanced),
double acting mechanical seal
EFKD 100-200-M Unbalanced (balanced),
double acting mechanical seal
EFKD 200-200-M Unbalanced (balanced),
double acting mechanical seal
There are mechanical seals designed for 16...100
mm shaft dimension range, over 100 mm on request.
The dimensions are in mm but we manufacture in inches also on request.
At the most of the mechanical seals listed below, the fitting dimensions
with the pump are according to DIN 24960
standard.
For ordering Mechanical Seals you can download
the following Data Sheet:
Data Sheet for Mechanical Seal (
pdf)