China Boston Round Bottle Factory - Boston Round Bottle Manufacturers and Suppliers - Guangzhou Bowei Packaging Products Co., Ltd.

Custom Boston Round Glass Bottles – Wholesale Manufacturer & Bulk Supplier

Premium quality Boston round bottles for essential oils, cosmetics, and wellness brands.

ISO-certified manufacturing | Flexible MOQ | Full customization services.

2OZ 4OZ 8oz High Gloss Black white matte Boston reusable glass spray bottle lotion bottle with bamboo wood lid, ideal for home, kitchen, bathroom, decorative use,

Boston Reusable Glass Spray Pump Bottle
We are provide more details of these boston round spray glass bottle,please sent me inquire to know more product's details.

Cobalt Blue Boston Round Essential Oil Glass Trigger Spray Bottle
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

1oz 2oz 3oz 4oz Clear Amber Round Glass Boston Bottles
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

15ml 30ml 60ml 120ml Amber Child Proof Cap Dropper Boston Bottle
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

15 30 60 120 Ml Essential Oil Boston Glass Bottle With Child-proof Cap
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

1oz 2oz 3oz 4oz Amber Boston Round Child Proof Dropper Glass Bottles
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

1 2 3 4 Oz Boston Round Dropper Glass Bottle With Child Proof Caps
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

Amber Boston Round Glass Bottle With Child Tamper Proof Cap
The boston round glass bottle come with Bamboo Lotion Top,glasss dropper cap,perfect for bottling massage oil, essential oil, herbal extracts and skincare lotion and oils.

20ml 30ml 50ml Purple Boston Bottles Round Glass

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What is a Boston Round bottle?

A Boston Round bottle is a cylindrical glass container characterized by its rounded shoulder design and narrow neck opening. Originally designed in Boston, Massachusetts,
this classic bottle style has become an industry standard for packaging liquids that require protection from light, air, and contamination. Its elegant design combines functionality with aesthetic appeal,
making it ideal for high-end beauty, aromatherapy, and health products.

Key features:
Boston round bottles typically use standard GPI/SPI threaded necks (such as 18-400, 20-410, 24-410, 28-400). This makes them extremely versatile and compatible with almost all mainstream closure systems (droppers/spray pumps/lotion pumps/standard screw caps).

Boston Round Bottles: Capacity and Standard Neck Size Comparison Chart
Please note: The standard neck sizes for glass and plastic (PET/HDPE) Boston round bottles often differ for certain capacities. For accuracy, I have listed them separately:

Capacity (oz)	Capacity (ml)	Common diameters (glass bottle)	Common diameters (plastic bottles)	Common application scenarios
0.5 oz	15 ml	18-400	18-410 / 20-410	Essential oil samples, eye serum
1 oz	30 ml	20-400	20-410	Facial serum, foundation, CBD oil
2 oz	60 ml	20-400	20-410 / 24-410	Travel size products, hand sanitizer, hair oil
4 oz	120 ml	22-400	24-410	Toner, lotion, aftershave
8 oz	240 ml	24-400	24-410	Shampoo, hand soap, body lotion
16 oz	480 ml	28-400	24-410 / 28-410	Family-size toiletries, cleaning products, large-size syrup
32 oz	960 ml	33-400	28-410 / 28-400	Bulk raw materials, chemical reagents, cold brew coffee

What do the numbers represent?
Taking 24-410 as an example:

The first number (24): Represents the outer diameter of the bottle opening (in millimeters). The cap and bottle will only fit together if their diameters match (e.g., both are 24mm).

The second number (410): Represents the thread style, which refers to the number of turns the thread makes around the bottle neck and the height of the bottle neck. This is the core difference between 400 and 410.

The Core Difference: 400 vs. 410

While they may share the same diameter, their height and thread count differ significantly:

Standard (GPI/SPI)	Thread Turns	Visual Characteristics	Common Material
GPI/SPI 400	1 Turn (approx. 360°)	Short Neck / Low Profile. The threads are shallow, and the neck appears shorter.	Glass Bottles (Especially Amber/Clear Glass Boston Rounds)
GPI/SPI 410	1.5 Turns (approx. 540°)	Tall Neck / High Profile. The threads wrap around more times, and the neck sits higher.	Plastic Bottles (PET/HDPE Boston Rounds)

Why Does This Matter? (Avoiding Costly Mistakes)

Mixing and matching incompatible neck finishes can lead to two major problems:

The "Unsightly Gap" (Aesthetic Failure): If you screw a 410 pump (tall skirt) onto a 400 glass bottle (short neck), the pump will seal, BUT it will not sit flush against the bottle's shoulder. This leaves a visible gap that exposes the neck threads, ruining the premium look of your product.

Sealing Failure (Functional Failure): If you screw a 400 cap (short skirt) onto a 410 plastic bottle (tall neck), the cap may "bottom out" on the threads before the internal liner actually seals against the bottle rim. This results in product leakage during shipping.

Common color descriptions for Boston round bottles

amber

Industry standard for light-sensitive products. Blocks 99% of ultraviolet light (280-450nm), protecting products from oxidation.

Suitable for:
Essential oils and aromatherapy products, pharmaceuticals and chemical reagents

Cobalt Blue

Although it can provide some degree of light protection, its UV protection effect is weaker than that of amber. It primarily reduces the transmission of visible light through its color intensity.

Suitable products:
High-end skincare products, perfumes

Violet/Miron Glass

This type of glass exhibits unique spectral filtering properties. It completely blocks visible light but allows ultraviolet A (UV-A) and far-infrared radiation to penetrate. This combination can inhibit microbial growth and maintain bioenergetic activity.
Applicable products:
Luxury skincare products, high-purity natural extracts

Custom Colors

Guangzhou Bowei Packaging Products Co., Ltd. provides comprehensive OBM/ODM services, from initial concept sketches to the final product ready for retail shelves.

►Precision Pantone Matching

►Diverse Finishing Techniques

►Eco-Friendly Pigments

Guangzhou Bowei Packaging Products Co., Ltd. is one of the leading boston round bottle manufacturers and suppliers in China, offering you the customized service and timely delivery. It belongs to one of the famous brands. Welcome to wholesale the high quality bulk boston round bottle in stock from us.