© Miller Diving All Rights Reserved Document # 030715001
21
REMOVAL AND REPLACEMENT:
To test the Neck Ring for flatness, which is critical for
proper sealing, place the assembly with the screw heads
up on a large, flat steel plate. Attempt to tip or rock the
ring by pressing down one side, then the other. Do this
all around the Ring. An up and down movement indi-
cates the Ring is pivoting on a high spot. Locate and
mark the spot (usually there will be 2 areas). Turn Ring
upside down (screw heads down), and place two small,
flat pieces of wood, one on each side of high spot, be-
tween plate and ring. Tap lightly with rubber or wooden
mallet. Keep testing and tapping until Neck Ring sits
perfectly flat.
To replace a worn or damaged Neck Seal Boot:
1. Remove all Screws.
2. Remove old Neck Seal and insert new Neck Seal. Be
sure sewing on Neck Seal and screw heads end up on
the same side of Ring.
3. Insert Screws only a couple of turns until all screws
are installed, then tighten. There will be approximately
1/4 in, of excess rubber material all around the outside
of Neck Ring. This excess must be carefully cut off flush
using a razor blade. Small holes or tears in Neck Seal
can be repaired in the field with wetsuit glue.
3-N NECK RING GASKET
DESCRIPTION:
The Neck Ring Gasket is constructed of oil-resistant
Neoprene rubber. The Gasket is glued in the Helmet Dam
area. The Helmet and Neck Ring, when mated together,
are sealed watertight by the Neck Ring Gasket.
REMOVAL AND REPLACEMENT:
1. Remove old Neck Ring Gasket and clean area thor-
oughly, using a screwdriver and wire brush, being care-
ful not to damage Helmet coating.
2. Apply wet suit glue to both Neck Ring Gasket and
Helmet. Allow to dry for several hours.
3. Apply second coat of glue to Helmet and to Neck Ring
Gasket, letting glue dry until tacky (approximately 10
minutes).
4. Fit the gasket into the Helmet, making certain it is
evenly distributed throughout and touches outer wall of
Helmet Ring. Press down firmly.
WARNING: Wet suit glue does release
dangerous fumes which could be hazardous to
the diver. The Helmet should not be used for at
least six (6) hours after gluing.
Trim excess rubber after installing new Neck Seal (18).
Always install the Neck Ring with screw heads out.
