Custom Closed-End Zippers

Precision-Made. Secure by Design.

Closed-end zippers are built to stay connected—perfect for pockets, bags, pants, sleeves, cushions, and any product that doesn’t require the zipper halves to separate. At Lenzip, we manufacture custom closed-end zippers in a wide variety of chain types, gauges, sliders, and colors—tailored to your product’s technical and visual requirements. Whether you’re ordering a lightweight closed-end coil zipper for apparel or a heavy-duty closed-end molded plastic zipper for tactical gear or luggage, Lenzip delivers unmatched reliability with fast U.S.-based production.

What Can You Customize?

Length – From 4” to virtually any length required
Chain Material – Coil (nylon or poly), Molded Plastic, or Metal
Gauge – Available in #2, #4.5, #5, #7, #8, #10, #12, #15, #20
End Style – Closed-End, Bag Style, Bridge Top, Coverall, other Custom Options Available
Slider Type – Autolock, Reverse Bail, Double Pulls, Pinlock, Stainless Steel, and more
Tape Color – Choose from our full standard chart or request a custom match
Minimum Order – As low as 25 units—ideal for prototyping, small runs, or full-scale production

What Is a Closed-End Zipper?

A closed-end zipper is a type of zipper that remains sealed at the bottom, thanks to a built-in bottom stop or cap. Unlike open-end zippers that fully separate, closed-end styles are designed to keep both sides connected when zipped up, offering a secure, non-detachable closure.

This configuration makes closed-end zippers a popular choice for products where full separation isn’t needed—or could even be a problem. From fashion to industrial uses, their durable, fixed-base design provides both function and stability.

You’ll commonly find custom closed-end zippers used in:

Pants and denim jeans, where the zipper needs to stay anchored
Sleeves on jackets or leather outerwear, especially where a sleek look and secure fit are important
Cushions and upholstery that benefit from a low-profile, non-separating closure
Tent openings or gear compartments where partial access is required without full separation
Handbags, pouches, and backpacks that require one-way zip security
Medical, marine, and industrial products, especially in areas where the zipper must stay intact under pressure

Whether you’re sourcing a closed-end coil zipper for apparel or a heavy-duty molded plastic zipper for rugged gear, this style offers simplicity, strength, and a clean, sealed finish you can count on.

Other Zipper Styles:

Open End

Typically used on the front of jackets, can also be used on any items that require the zipper halves to fully detach from each other.

Closed End

Use for pants, sleeves on leather jackets, purses, tents or any application where a single slider, one-way closed end zipper is needed.

Tu-Way Open End

This zipper style has two sliders and can be opened from the top and/or bottom. Great type of zipper for heavy winter coats where more leg room may be needed for driving the car, while still keeping the top slider zipped up.

Coverall

As the name implies, this zipper is used on coveralls (overalls). One end is open and one end is closed. This zipper may be used on the legs of coveralls or used as the front zipper in coveralls.

Bag Style

This zipper works well for bags or any application that would benefit from a zipper that is closed at each end but allows for quick access by having two sliders. When the zipper is closed, the sliders meet in the middle (or any point on the zipper).

Bridge Top

This style of zipper is typically used on pockets or inside of purses. Both ends of the zipper are closed and the zipper has one slider.

Closed-End Zipper Chain Materials: Coil, Molded, and Metal Explained

The term "chain type" refers to the material and design of a zipper’s interlocking teeth. The most common options are nylon coil, molded plastic, and metal. Coil zippers are known for their flexibility and lightweight feel, making them ideal for soft goods like jackets, bags, and tents. Molded plastic chains are more rigid and durable, built to withstand moisture, dirt, and rugged environments. Metal chains, on the other hand, offer a sturdy grip with a classic look—perfect for jeans, leatherwear, or heavy-duty industrial use. Each zipper chain type is engineered for specific applications depending on performance needs, aesthetics, and environmental conditions.

Coil

Nylon or Polyester

Flexible, lightweight, abrasion-resistant. Smooth operation with self-healing properties. Ideal for apparel, tents, bags, and luggage. Available Gauges: #2, #4.5, #5, #7, #8 and #10.

Molded Plastic

Molded Tooth

Durable, chunky plastic teeth molded directly to the tape. Withstands dirt and moisture; ideal for outerwear and gear. Available Gauges: #5, #8, #10, #12, #15, #20

Metal

Brass, Antique, Black Oxidized

Classic finish, heavy-duty durability. Optional Fire Resistant (FR) variants. Preferred for leather goods, denim, safety wear. Available Gauges: #5, #10

Water Resistant

Fire and Water Resistant

Fire Resistant: Designed to meet industrial and safety standards. Water Resistant: Engineered with laminated tape to repel water.

Slider Options

We offer a full range of high-quality zipper sliders for closed-end zippers, built to match your exact chain type, gauge, and use case. Whether you’re manufacturing pants, cushions, leather jackets, pouches, or industrial gear, the right slider makes all the difference in smooth operation and secure closure. Our Autolock sliders are a top choice for most closed-end coil zippers—they lock automatically to prevent accidental opening, making them ideal for garments, bags, and everyday use. We also stock specialized options like Reverse Bail sliders, Double Pulls, and Pinlocks, giving you more control over access and appearance—especially useful for heavy-duty closed-end zippers used in bags, pouches, or utility gear.

Need something more secure? We offer Bank Bag Pinlock and Padlock sliders, which can integrate with external locks—perfect for tamper-evident storage or controlled-access compartments. For harsh environments, our Stainless Steel Nonlock Double Pull sliders provide unmatched corrosion resistance and strength. If you don’t see a specific slider type listed, give us a call—we carry a plethora of slider options across every material and gauge, and we’re happy to help you find the right fit for your custom closed-end zipper needs.

Customization Options

We build each zipper to your specifications:

Lengths: From 4” to virtually any length required, in 0.5” increments
Gauge: Refer to the gauge chart below (varies by material type)
End Configuration: Closed-End, Tu-Way, Coverall, Bag Style, Bridge Top
Tape Colors: Choose from our full standard color chart or request a custom match

Zipper Length:

The fabric at the ends of the zipper are never used in the length calculation. The length of a zipper is always considered to be the operating length, not the total length.

We can make any zipper length you need. Please call 847-368-9000 or Email for custom pricing.

Zipper Colors:

Black

White

Natural

Grey

Red

Pink

Sunbrite

Light Blue

Medium Blue

Navy

Army Green

Coffee

Gauge Chart

	2	4.5	5	7	8	10	12	15	20
Coil
Metal
Molded

- Fire Resistant Options Available

- Water Resistant Options Available

Why Choose Lenzip?

🧷 U.S.-Owned & Operated – Manufactured with precision at our Illinois facility
🧷 Low Minimums – Start with just 25 units per configuration
🧷 Full Customization – Length, color, slider, material—all tailored for you
🧷 OEM & Private Label Support – Trusted by top manufacturers
🧷 Fast Turnarounds – Get quotes, samples, and production fast
🧷 Industry Experience – Serving apparel, tactical, industrial, and marine sectors

FAQs

🧷 Do you offer sliders for closed-end zippers?
Yes—we carry a wide variety of sliders for closed-end coil, molded, and metal zippers across all gauges and use cases.
🧷 Which slider type is best for pants, bags, or cushions?
Autolock sliders are ideal for garments and bags that need secure closure, while Reverse Bail or Pinlock options work well for utility gear and pouches.
🧷 Do you offer stainless steel or tamper-evident slider options?
Yes. We offer stainless steel sliders for extreme environments, plus Padlock and Bank Bag Pinlock sliders for secure storage and packaging applications.
🧷 I don’t see the slider I need—can I still order?
Absolutely. We offer a plethora of custom slider options—just call us and we’ll help you find the right fit for your closed-end zipper project.

Custom Closed-End Zippers

Precision-Made. Secure by Design.

What Can You Customize?

What Is a Closed-End Zipper?