What Is Crimping in Perfume Bottles? Screw Neck vs Crimp Neck Explained

If you're sourcing perfume bottles for your fragrance brand, you'll quickly run into two closure systems: screw neck and crimp neck. Understanding the difference determines what spray pumps you can use, whether your bottles need specialized equipment, and how your finished product looks and performs on shelf.

Quick Answer

• Crimp neck bottles use a metal collar that is mechanically pressed (crimped) onto the bottle neck — the closure is permanent.
• Screw neck bottles use a threaded neck; the pump collar screws on and can be removed.
• Most fine fragrance bottles (especially with FEA15/FEA18 necks) use crimp closures. Screw necks are common in functional or refillable formats.
• Crimping requires a crimping tool or press; screw pumps do not.

What Is Crimping in Perfume Bottles?

Crimping is the process of permanently securing a spray pump to a glass bottle by deforming a metal collar around the bottle's neck ring. The collar — also called a ferrule — grips the neck tightly, creating an airtight, tamper-evident seal.

This is the standard closure method for fine fragrance production worldwide. The vast majority of luxury and mass-market eau de parfum and eau de toilette bottles use crimp closures. The process was developed to protect volatile aromatic compounds from oxidation and evaporation.

Once crimped, the pump cannot be removed without damaging the collar — the bottle is effectively sealed for life.

Screw Neck vs Crimp Neck: Key Differences

Crimp Neck

• Closure method: Metal collar deformed mechanically onto the neck
• Reversibility: Permanent — not refillable without special tools
• Seal quality: Airtight, high integrity
• Equipment needed: Crimping tool or bench press crimper
• Neck standard: Most commonly FEA15 or FEA18
• Typical use: Fine fragrance, luxury bottles, commercial perfume production
• Cap compatibility: Caps clip or push onto the ferrule

Screw Neck

• Closure method: Threaded collar screws onto matching bottle threads
• Reversibility: Removable and refillable
• Seal quality: Good, but depends on thread tolerances
• Equipment needed: None — hand-tightened
• Neck standard: Various proprietary thread sizes (e.g., 15/415, 18/415)
• Typical use: Refillable atomizers, travel sprays, functional/wellness formats
• Cap compatibility: Caps are typically integrated into the pump collar

How the Crimping Process Works

Step 1: Fill the Bottle

Fill the bottle with fragrance before crimping. Leave appropriate headspace (typically 5–10%) to allow for thermal expansion. Never try to fill after crimping.

Step 2: Insert the Dip Tube and Pump

Place the dip tube into the bottle. The dip tube length should reach near the bottom of the bottle to ensure full dispensing. Seat the pump assembly loosely on the neck.

Step 3: Position the Metal Collar (Ferrule)

Slide the metal ferrule over the pump collar so it sits squarely on the bottle's neck ring. The ferrule should sit flush — any tilt will cause an uneven crimp and potential leaking.

Step 4: Apply the Crimp

Use a manual crimping tool, a bench crimper, or an automated crimping press to compress the collar evenly around the neck ring. The metal deforms into the groove of the neck, locking the pump in place. For a guide on doing this at home, see our article on How to Crimp Perfume Bottles at Home.

Step 5: Test the Seal

Actuate the pump 5–10 times to prime it. Check that the spray pattern is consistent and there are no leaks at the collar. A properly crimped bottle will show no flex or movement at the ferrule when the pump is pressed.

Which Closure Type Should You Choose?

For most indie fragrance brands launching a standard eau de parfum or eau de toilette, crimp neck is the correct choice. It is the industry standard for a reason: the permanent seal protects fragrance integrity and meets retail and airline regulations for sealed goods.

Choose screw neck if your concept specifically requires refillability — for example, a refillable atomizer format, a subscription refill program, or a travel bottle system. Be aware that screw-neck pumps are generally less widely available in fine fragrance neck sizes.

If you're unsure, always confirm the neck specification of your chosen bottle before ordering pumps. Most bottles listed on Packamor specify whether they are FEA15 crimp, FEA18 crimp, or screw neck. See our guide on perfume bottle neck sizes for more detail.

Common Mistakes

• Ordering screw-neck pumps for crimp-neck bottles. These are not interchangeable. Check the neck spec before ordering.
• Crimping without a proper tool. Using pliers or improvised tools creates uneven pressure and almost always results in leaks or a damaged bottle.
• Tilted ferrule before crimping. An off-center collar won't seal evenly. Always verify alignment visually before applying the crimp.
• Wrong dip tube length. A dip tube that's too short wastes product; one that's too long kinks at the bottom and blocks flow.
• Filling after crimping. Once crimped, the bottle cannot be filled without destroying the pump. Always fill first.
• Ignoring headspace. Overfilling leaves no room for thermal expansion and can cause leakage at temperature extremes during shipping.

Checklist for Choosing the Right Closure

• ☐ Confirm your bottle's neck type (crimp or screw) and neck size (FEA15, FEA18, or other)
• ☐ Order pumps that match the neck specification exactly
• ☐ Verify dip tube length against bottle height
• ☐ Source the correct crimping tool for your production volume
• ☐ Perform a test crimp on a water-filled bottle before committing to fragrance fill
• ☐ Check cap compatibility with your chosen ferrule size
• ☐ Confirm filling volumes and headspace before production

Recommended Products

Packamor stocks a range of crimp-neck and screw-neck perfume bottles in popular sizes including 10ml, 30ml, 50ml, and 100ml. Pair your bottles with matching perfume boxes and custom perfume labels for a complete brand-ready package.

If you're ready to fill and crimp, explore our crimping tools and accessories — designed for small-batch production without the need for industrial equipment.

FAQ

Can I uncrimp a perfume bottle to refill it?

Technically possible with the right tools, but not recommended. The ferrule is deformed during crimping and cannot be reseated properly once removed. The pump seal will be compromised. For refillable formats, choose a screw-neck bottle from the start.

What is a ferrule in a perfume bottle?

A ferrule is the metal collar that is crimped onto the neck of a perfume bottle to permanently secure the spray pump. It is the visible ring at the base of the pump assembly on most fine fragrance bottles.

What's the difference between FEA15 and FEA18?

FEA15 and FEA18 refer to standardized neck diameters used in fragrance packaging — 15mm and 18mm respectively. FEA15 is the most common for sizes up to 50ml; FEA18 is typical for larger bottles (100ml and above). Pumps and crimpers must match the neck size exactly.

Do I need a special crimping tool for each neck size?

Yes. Crimping tools are sized to match specific neck dimensions (FEA15 or FEA18). Using the wrong size results in an incomplete or deformed crimp. Some bench crimpers include interchangeable heads for different neck sizes.

Can I use a screw-neck pump on a crimp-neck bottle?

No. The two systems are mechanically incompatible. A screw-neck pump collar has threads that require a matching threaded bottle neck. A crimp-neck bottle has a smooth neck ring designed to be gripped by a ferrule under mechanical pressure.

Conclusion & Next Steps

Understanding crimping in perfume bottles is fundamental to sourcing the right packaging for your fragrance line. Most fine fragrance production uses crimp neck closures for their airtight seal and professional finish. If you're building a standard perfume product, crimp neck is almost certainly the right choice — and the right tool makes the process straightforward even at small batch volumes.

Ready to source bottles for your launch? Explore Packamor's full range of perfume bottles, and pair them with our perfume boxes and custom perfume labels to build a cohesive brand presentation from day one.