Wetsuit Seam Construction Styles
Overlock stitch
Overlock is the simplest, most common construction method.
Two edges of neoprene are rolled together with a thread
stitched tightly around them. It is an extremely strong
and durable method of construction.
Flatlock stitch
Flatlock is achieved by lapping the neoprene together,
creating a flat, comfortable seam. Usually used in the upper
body where chaffing is a problem. Flatlock is identified
by a band of multi interlocked threads on both sides of
the suit.
Blindstitch
This method is used when two panels are glued and butted
together, then blindstitched on each side. Blindstitch uses
a curved needle and does not penetrate through to the other
side of the suit. This keeps a glued seam water tight. This
construction method is commonly referred to as 'glued and
stitched.'
Zig-zag stitch
Zig-zag stitching is used to finish cuffs and collars,
and sew in zips. It is superior to a straight stitch, as
it will stretch with the neoprene.
Glued seams
A glued seam is created by first applying glue to both
panels. The seam is then carefully aligned and pressed together,
then squeezed into place with pneumatic pinchers. A glued
seam is flat, supple, watertight and flexible.
Taped seams
Glued and stitched seams are covered with a 20mm wide nylon
tape. This eliminates any possibility of a rash from the
blindstitched seam. We tape Glued and Blindstitched suits
in the area under the arms to reduce rashes, but we do not
tape all seams as it can reduce flexibility in the suit.
Zips
The industry standard for zippers is a brand called YKK.
All Seventhwave wetsuits use quality YKK nylon zips. Metal
zips will rust and have less stretch. Zips with nylon teeth
and sliders are used for lighter, summer style wetsuits,
while heavier-duty metal sliders with nylon teeth are used
for the thicker, winter style wetsuits.
Advice
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