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Closures DIN28

Plastic pump, white, dip tube 130 mm, 28/410

The plastic pump with 28/410 thread is a dispensing closure for bottles with liquid and semi-viscous products. full description

AvailabilityIn stock · 727 pcs
Product codeOVD28PB_130
€0.65incl. VAT

Lowest price in the last 30 days: €0.65

Volume pricing
1–199 pcs€0.65Your price
200–999 pcs€0.60−8 %
1000–4999 pcs€0.55−15 %
from 5000 pcs€0.49−25 %

Total for 1 pcs: €0.65

Product description

The plastic pump with 28/410 thread is a dispensing closure for bottles with liquid and semi-viscous products. A single press delivers a measured dose, allowing one-handed dispensing without opening the bottle and without unnecessary contact between the contents, air, and fingers. It is ideal for liquid soaps, shower gels, shampoos, conditioners, and body lotions, as well as household cleaning products such as washing-up liquid.

The pump material is suitable for contact with cosmetic products.


How the pump dispenses

One full press delivers approximately 1 ml of product. The actual dose depends on the viscosity of the contents: thicker products dispense slightly less and more slowly. The repeatable dose makes it easy to estimate usage and to recommend a number of presses per application on the label.

Before first use, the pump should be pressed several times without product until the dip tube and mechanism are primed. Only then will it dispense evenly.

It is worth testing a new formula with the pump before filling an entire batch. Simply fill one bottle and check whether the product draws up, whether it dispenses smoothly, and whether it dries out at the pump nozzle after a few days.


Which products it is suitable for

The pump works best with products that flow freely:

  • Liquid soaps and shower gels – medium-viscosity surfactant products, where one-handed dispensing is most practical.
  • Shampoos and conditioners – for conditioners the result depends on viscosity; very firm, creamy textures cannot be drawn up by the pump.
  • Body lotions and light emulsions – fluid O/W emulsions that pour freely when the bottle is tilted.
  • Household cleaning products – washing-up liquids, liquid hand soaps for the kitchen or workshop.

Less suitable are thick creams, butters, and gels that hold their shape, as well as products containing solid particles, such as scrubs with salt, sugar, or ground kernels. Particles may clog the valve and prevent the pump from dispensing.


Bottle selection and dip tube length

The designation 28/410 describes the neck the pump fits: the first number is the neck diameter in millimetres, the second indicates the thread type. Both values must match; a bottle with a 28 mm neck but a different thread type will not seal. Bottles with the same neck type and ready-made bottle-and-pump combinations are available from Handymade. For a custom combination, we recommend verifying the seal, dispensing performance, and compatibility of the closure with the specific formula.

The dip tube should reach just above the bottom of the bottle. If it is too long for the chosen bottle, trim it with sharp scissors, preferably at a diagonal cut. This prevents the end from suctioning against the bottom so that the product can be drawn up almost completely.


What to know before filling

The bottle is filled to the nominal volume, not to the brim. The nominal volume is the quantity for which the bottle is designed under standard filling conditions; the total brim-full volume is its physical capacity right up to the neck. The difference between the two forms a headspace that, with a pump, is taken up by the mechanism body and dip tube. If the bottle is overfilled, product will leak through the thread when the pump is screwed on.

Before the first fill it is recommended to flush the pump: pump warm water through it several times, then isopropyl alcohol or ethanol, and allow it to dry completely. Any residual water in the mechanism would otherwise find its way into the product.

The pump is made of polypropylene. For products with a high proportion of essential oils, alcohol, or solvents, it is advisable to check beforehand whether the contents attack the plastic and whether the pump still seals and dispenses correctly after several weeks.

With products that dry out or crystallise on exposure to air, a plug may form at the pump nozzle. Rinsing the nozzle with warm water usually resolves this.


Frequently asked questions

Which bottle does the plastic pump with 28/410 thread fit?
The 28/410 pump fits bottles with the same neck designation, i.e. a neck diameter of 28 mm and thread type 410. Both values must match; otherwise the closure will not seal or cannot be tightened. The neck type is listed in the specifications for each bottle. For a custom combination, it is advisable to check the seal of the filled bottle laid on its side.
How much product does the 28/410 plastic pump dispense per press?
The pump dispenses approximately 1 ml of product per full press. The exact dose depends on the viscosity of the contents; with thicker products it tends to be slightly lower. The first presses after fitting the pump to the bottle are empty, as the dip tube and mechanism must prime first. Even dispensing begins only after that.
Can the dip tube of the plastic pump be shortened?
Yes, the pump's dip tube can be cut to length with sharp scissors to match the height of the bottle. The end should reach just above the bottom, and a diagonal cut is recommended to prevent the tube from suctioning against the bottom of the bottle. If the tube is cut too short, an unrecoverable residue will remain in the bottle, so it is better to trim gradually and test the length directly in the bottle.
Is the plastic pump suitable for thick creams and scrubs?
No, the pump is not suitable for thick creams, butters, or scrubs containing particles. The mechanism requires a product that flows freely; it cannot draw up firm textures, and solid particles may clog the valve. Suitable products include liquid soaps, shower gels, shampoos, and fluid body lotions. In borderline cases of viscosity, a trial with one filled bottle will determine suitability.
Can the plastic pump be cleaned and reused?
Yes, when refilling with the same product the pump can be reused. Clean it by pumping warm water through, then isopropyl alcohol or ethanol, and allow it to dry thoroughly. The mechanism cannot be disassembled or inspected internally, however, so when changing products or for items intended for sale it is preferable to use a new pump.

Parameters

Product colour
White
Country of origin
China
Diameter
30,5 mm
Thread type
28/410
Height
37 mm
Product material
PPPlastic
Tube length
105 mm
Dose
1 ml

Product documentation

PDSProduct Data Sheet
Product properties and usagePDF ↓
Product properties and usagePDF ↓
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2 PDF files in one archive

Ludivine D.29 Sept 2026FR

Verified purchase

Variant: Plastová pumpička, biela, hadička 130 mm, 28/410

Very good quality

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