![]() ![]() This depth and breadth leaves us well-positioned to support the growth of customers of all sizes and adapt to their evolving business needs. Our “solutions-first” approach leverages our extensive product and machinery portfolio, engineering expertise, and integrated production, service, and supply chain solutions in 70+ countries/regions. Since the company’s founding in Tokyo in 1934, YKK has continuously set industry standards for quality, innovation, and sustainability in the production of zippers, plastic hardware, hook and loop fasteners, webbing tapes, and snap and buttons. YKK solves the most complex fastening and attaching challenges. ![]() YKK, VISLON, AQUAGUARD, PROSEAL are registered trademarks of YKK CORPORATION in Japan and other countries and regions. Both the AQUASEAL® and PROSEAL® zippers are pictured here. These waterproof zippers are 100% pressure tested during the production process, ensuring that each zipper arrives fully capable of functioning to the prospective pressure specifications. AQUASEAL® zipper is only offered with polyurethane tape, and PROSEAL® zipper is being provided in polyurethane, PVC, and chloroprene rubber zipper tapes. These zippers can be RF welded, ultrasonically bonded, or sewn/seam-sealed into the customer application. YKK’s PROSEAL® zipper uses metal zipper technology to produce a pressure-tight zipper that can withstand the requirements of commercial diving or hazardous chemical applications. Our AQUASEAL® zipper combines the technology used in VISLON® zippers with an innovative seal between the elements allowing for a highly flexible and easy operation with perfect protection for the elements above or below the water. These zippers are designed to 100% prevent water from penetrating the exposed surface of the zipper. YKK’s airtight / watertight / waterproof products make up several styles of zippers that provide our customer’s slider fasteners that offer a completely waterproof design with differing levels of airtightness. YKK’s airtight / watertight / waterproof zippers These types of zippers are available in both T4 (Shiny) and T5 (Matte) Coil and VISLON® zipper versions as pictured here: These zippers can be RF welded or ultrasonically bonded or sewn to PU-coated materials or fabric. The other side is spray-coated with a DWR for increased surface tension and improved prevention of water penetration. These zippers use a water-repellent polyurethane film coating on one side to help shed water away from the zipper and enhance the appearance of garments. YKK’s AquaGuard® zippers are also considered water-resistant but have an added layer of protection from the elements. These zippers look no different from the standard coil and VISLON® zippers pictured below until exposed to water. This prevents the water from penetrating the surface of the zipper tape, keeping the user dry. When exposed to water, this zipper will allow the water to bead up on the surface of the textile tape. This style zipper is designed to repel water by decreasing the surface tension of the zipper tape. Standard water-resistant items are coil and VISLON® zippers with a DWR (Durable Water Repellent) coating applied during the dyeing process. YKK offers the following categories of products that can be used to protect the user from increasing water exposures. It is not until you understand YKK’s water protective product offerings that you begin to realize the extreme differences in these terms. ![]() These are often used interchangeably in conversation by both our customers and the industry in general. One of the most common misunderstandings regarding YKK® water protective zipper product offerings is the difference between water-resistant and waterproof. ![]()
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