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Operation of
manual crimping tools (Standard)
Crimpers from MACHEREYNAGEL are supplied with a basic adjustment for the individual cap size and the
septa thickness that is typically used for these caps. Crimp necks and septa thicknesses, however, can differ
from manufacturer to manufacturer. Furthermore it needs especially to be considered with regard to 20 mm
crimp caps that these are used in combination with vials having a flat DIN crimp neck as well as with those
having a beveled top Headspace crimp neck (with a very low bearing surface for the septa).
Beveled Top Headspace Crimp Neck
In order to achieve an optimal crimp result, a further adjustment might be necessary. This may be conducted
by the crimping pressure and / or the fixation of the crimping height.
An optimal crimp result is characterized by the following features:
75.5
75,5
1. The cap surface is flat and the cap sides fit tightly and firmly around the glass edges without any deforma
tion of the aluminium surface.
2. The septa neither emerges out of the center hole of the cap nor is being sucked into the vial.
3. The cap cannot be turned by usage of single fingers without enormous expenditure of energy.
Often the socalled "twist test" of the crimp cap is being used, in order to verify the crimp result. This test is
only conditionally meaningful. On one hand the slippery PTFE lamination of the septa results already by a
relatively low expenditure of energy in a torque that enables the turn of the cap, even if the cap was crimped
correctly. As the test often is done with the complete hand (instead of using single fingers) and with a high
expenditure of energy, the false statement is even strengthened.
On the other hand overcrimped closures that cannot be turned, which have, however, either deformed cap
sides or sucked in septa, may not be as tight as you would expect from such an "unturnable" crimp. This is
due to the fact that septa material is sucked into the vial opening by the far too high crimping pressure and
is then, however, missing at the cap sides for sealing. The same is also valid for septa that due to a wrong
23
23
adjustment of the crimping height and a too strong crimping pressure emerge through the cap's center hole.
Construction of crimpers N 11, N 13 and N 20 (N 8 is only adjustable in crimping pressure)
1 Screw in the handle for the adjustment of the crimping pressure by the suspension point of the handles
2 Crimping head with a hexagon screw inside. With the attached hexagon key an adjustment of the
crimping height may be carried out
3 Striker
b
Deutschland und International:
Germany and international:
MACHEREY-NAGEL GmbH & Co. KG
MACHEREY-NAGEL GmbH & Co. KG
Neumann-Neander-Str. 6–8 · 52355 Düren · Deutschland
Neumann-Neander-Str. 6–8 · 52355 Düren · Germany
Tel.: +49 24 21 969-0 · Fax: +49 24 21 969-199
Tel.: +49 24 21 969-0 · Fax: +49 24 21 969-199
info@mn-net.com · www.mn-net.com
info@mn-net.com · www.mn-net.com
Flat DIN Crimp Neck
75,5
75.5
22,5
22.5
a
c
Switzerland:
Schweiz:
MACHEREY-NAGEL AG
MACHEREY-NAGEL AG
Hirsackerstr. 7 · 4702 Oensingen · Schweiz
Hirsackerstr. 7 · 4702 Oensingen · Switzerland
Tel.: 062 388 55 00 · Fax: 062 388 55 05
Tel.: 062 388 55 00 · Fax: 062 388 55 05
sales-ch@mn-net.com
sales-ch@mn-net.com
Correction of inaccurate crimp features
Crimp too loose (undercrimped)
Septa emerges through the center hole (overcrimped) → Adjust crimping height (in the crimping head,
Deformation of the cap sides (overcrimped)
Septa is sucked into the vial (overcrimped)
Adjustment of the crimping pressure
1. Further unscrew the screw a in the handle → handles cannot be pressed so close together → lower
crimping pressure
2. Further screw the screw a in the handle → handles can be pressed closer together → higher crimping
pressure
Adjustment of the crimping height
1. Fixate the handles of the crimper with the striker c.
2. Hold crimping head b firmly in one hand and insert the supplied hexagon key in the hexagon screw
inside the crimping head.
3. a) Make a half up to a complete turn to the left (counter clockwise rotation), in case the crimp is too
loose.
b) Turn the hexagon key to the right (clockwise rotation), in case the crimp is too tight.
Ordering information
Manual crimpers, Standard (adjustable in crimping height and crimping pressure)
Crimper for 8 mm aluminium crimp caps (only pressure adjustable)
Crimper, height adjustable, for 11 mm crimp caps
Crimper, height adjustable, for 13 mm crimp caps
Crimper, height adjustable, for 13 mm Flip Top / Flip Off caps
Crimper, height adjustable, for 20 mm crimp caps
Crimper, height adjustable, for 20 mm Flip Top / Flip Off caps
Manual decappers, Standard (do not require any adjustment)
Decapper for 8 mm crimp caps
Decapper for 11 mm crimp caps
Decapper for 13 mm crimp caps
Decapper for 20 mm crimp caps
For further manual / electronic crimping tools please see our website under www.mn-net.com.
France:
Frankreich:
MACHEREY-NAGEL SARL à associé unique
MACHEREY-NAGEL SARL à associé unique
1, rue Gutenberg · 67722 Hoerdt · Frankreich
1, rue Gutenberg · 67722 Hoerdt · France
Tel.: 03 88 68 22 68 · Fax: 03 88 51 76 88
Tel.: 03 88 68 22 68 · Fax: 03 88 51 76 88
sales-fr@mn-net.com
sales-fr@mn-net.com
www.mn-net.com
→ Adjust crimping height (in the crimping head,
see b) and / or crimping pressure (by screw in
the handle, see a)
see b) and / or crimping pressure (by screw in
the handle, see a)
→ Adjust crimping height (in the crimping head,
see b)
→ Adjust crimping pressure (by screw in the
handle, see a)
REF
735126
735111
735113
735133
735120
735132
735408
735911
735913
735920
USA:
USA:
MACHEREY-NAGEL Inc.
MACHEREY-NAGEL Inc.
2850 Emrick Boulevard · Bethlehem, PA 18020 · USA
2850 Emrick Boulevard · Bethlehem, PA 18020 · USA
Tel.: 484 821 0984 · Fax: 484 821 1272
Tel.: 484 821 0984 · Fax: 484 821 1272
sales-us@mn-net.com
sales-us@mn-net.com
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