PermaSeal®
This patented technology is based on the concept of "stitch-a-hole/seal-a-hole", to provide an exceptionally high level of waterproofing for Goodyear welts, Littleway, and 3 Needle constructions.
Goodyear Welts
PermaSeal® Systems were first developed in 1992 specifically for Goodyear Welts.
PERMASEAL® pressure sensitive tape is applied to the lining.
(This step not required for unlined footwear.)
PERMASEAL® tape is applied to the outside perimeter of the rib (inseam).
PERMASEAL® liquid sealer is brush applied before bottom filling.
"Littleway" Stitching
WATER will not ENTER the shoe at the "Littleway" Stitch area...
either THROUGH the stitch hole or AROUND the stitch hole!
PERMASEAL® Tape is applied to to the lasted bottom prior to sole spotting and "Littleway" stitching.
"3-Needle" Stitching
PERMASEAL® "3-Needle" stitch system has been subjected to extensive severe and stringent laboratory testing and "real life" trials.
PERMASEAL® Tape is mechanically applied to the stitch shelf or lip of the shell bottom
Seam sealers
Both natural and synthetic water-based seam sealers are available to complete the waterproof package. Whether used with PermaSeal®, booties, or just waterproof leathers, these sealers will stop water from entering the shoe through stitched upper seams. All systems require 2 coats – the first to seal leather fibers and stitch holes; the second to give a firm, flexible, pinhole- free top coating.