ZaGO offers clients a wide variety of custom services. Our cutting-edge machine shop has the capacity to rapidly produce specialty orders in large quantities. Our team is dedicated to producing the best products available that fit your exact specifications. Our exceptional raw material inventory and in-house tooling grants us the ability to provide you with the shortest possible lead-times. In addition, we can provide you with ready-to-use products which are plated, heat-treated, grinded or otherwise finished exactly according to your every criteria. Our efficiency and overall businesses model allows us to offer customers competitive pricing, meaning that our clients never need to forgo quality for price or vice versa.


ZaGO specializes in providing clients with customized solutions for all their sealing needs. Thus, if you need fasteners with dimensions outside the standard range, turn to ZaGO–the top manufacturer of specialty fasteners. No matter your specifications, ZaGO can supply you with screws of nearly any length, thread diameter, or drive type, using your choice of materials from our extensive inventory.

Examples of the modifications we can make and the special machine parts we can provide you with include:

  • Shoulder screws
  • Captive screws
  • Special threading (left hand, metric, and double)
  • Non-standard lengths of threads
  • Special head configurations
  • Groves and cross-holes for safety wires

Switch Boots

Although standard switch boots are generally gray, we can can provide you with virtually any color switch boots you need, thanks to our extensive experience in color-matching and our capability to manufacture rubber compounds in any color required. ZaGO can produce switch boots from a diverse array of colors ranging from transparent to opaque. We can customize your switch boots using Federal Standard colors, Pantone colors, neons, collegiate colors, pearlescent and metallic and shades, glow-in-the-dark shades, and UV glow effects.

Our in-house manufacturing process ensures us coordinated and rapid completion of every project. Molds are produced in our machine shop by experts who bring over thirty years of experience to all projects. Every intricate application is optimally produced using our state-of-the art horizontal and vertical CNC machinery. Consequently, leading companies in the military, electronics, automotive, medical, and other industries depend on ZaGO every day to supply them with switch boots to meet their exact standards.

Crystal Seals and Custom Rubber Parts

ZaGO can provide you with Crystal seals for any application you need, granting you both full sealing protection as well as easy accessibility due to the transparent materials we use for our Crystal seals. ZaGO can custom-mold Crystal seals to perfectly fit customer specifications. Our tooling is made in-house with minimum lead times, and with our experience in molding rubber products and our knowledge in troubleshooting techniques, we keep rejections rates to an industry minimum, and prices competitive.

ZaGO Guarantees:

  • High quality at competitive prices
  • Quick turnaround
  • Vast knowledge of Rubber Molding Techniques

ZaGO provides clients with engineering assistance so as to resolve all sealing concerns. We can offer you as much assistance as you request as we work with you to select the ideal products for your application. Unlike other seal product distributors, we engineer and manufacture every one of our products at our headquarters in the United States. Thus, we immediately create and execute prototypes according to your requirements quickly and efficiently. Any modifications that need to be made can be completed immediately and once you approve a prototype we can begin production straight away.

Made in USA

Manufactured In The USA

ZaGO sealing products are available in a wide range of screw materials as well as “o” ring material options.

Free Sample Products

Leverage this unique opportunity to experience ZaGO’s products at no cost.

ISO Registered Firm

Why ZaGO

11 Reasons Leading OEMs Choose ZaGO Self Seal Screws

  • Seal and tighten
  • IP X6 to IP X8 ingress protection to meet IEC standards
  • Compatible with all environments
  • Reusable…for ease of use
  • Choice of all rubber o-rings to best meet application needs
  • Choice of head styles and recesses
  • Choice of all types of steel material
  • Choice of tamperproof line
  • Optional patch and anti-vibration element
  • Full metal to metal contact
  • Military compliant to satisfy aerospace standards

Our manufacturing team would be pleased to configure a seal screw that is easy to use, complements the appearance of your medical equipment, and meets the latest industry standards.

The ZaGO Advantage


Proudly Manufactured in the U.S.A

ZaGO manufactures its products in its state-of-the-art facility in Newark, New Jersey, using the finest possible materials. Every step of the manufacturing process is conducted by our local team, giving us the advantage in rapid production and coordination. We’re also listed with NJ Biz as one of New Jersey’s top manufacturing employers.


Prompt Delivery Worldwide

Because of our central location, we can make daily, timely deliveries throughout North America, South America, Europe, and Asia. Our ability to quickly create prototypes, implement adjustments, and begin production means that we have exceptionally short lead times.


Compatible with All Environments

Whatever hazards you face, ZaGO has a sealing solution. Torrential rains, oil intrusions, freezing temperatures or sandstorms–you name it. Our durable products were designed to withstand the most rugged environments, meaning that you can use our fasteners, boots, and crystal seals in virtually any kind of application.


Reusable and Convenient

ZaGO’s products are simply easy to use. We took messy solvents and complex installation and maintenance out of the equation. What you’re left with are one-piece, reusable products that are remarkably quick to install.


Customizable Features

You can customize all the essential features of your products here at ZaGO–from the materials to the colors. As a result of our extensive inventory, advanced equipment, and expert technicians, we offer clients custom-tailored products fitted according to their exact specifications.