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Flex Spout Closure for Plastic Bottles
Pull the Spout Out and Pour Without Unscrewing

What This Product Is
A pull out flex spout closure in PE and EVA, made in 40mm and 50mm for 1L, 4L and 5L plastic engine oil bottles and containers. The spout extends with a pull, so the pack pours under control without the cap being removed, and a tamper-evident tear shows whether it has been opened.
Key Benefits
- The extended spout reaches a filler neck without a funnel
- Controlled flow reduces over-pouring and waste at the point of use
- The tamper-evident tear gives the buyer a visible integrity check
- Colours are customisable for brand and grade identification
What Goes Wrong Without It
- Unscrewing a cap at the point of use means holding a wet cap and a full bottle at once
- Pouring engine oil into a filler neck without a spout spills onto the engine bay
- Retail packs give no clear sign of whether they have already been opened
Application Scenarios
- Lubricant and engine oil packers filling 1L, 4L and 5L bottles
- Automotive aftermarket brands selling through retail shelves
- Chemical packers whose product is poured into a narrow opening
Technical Data
| Material | PE+EVA |
|---|---|
| Size | 40mm/50mm |
| Note | Fit for plastic engine oil containers or bottles |
Figures above are taken from the product documentation. Anything not listed is confirmed at enquiry rather than estimated.
Features and Advantages
Features
- Designed to fit 1L,4L and 5L plastic bottles
- Easy to use
- Leak-proof
- Customizable colors
Advantages
- Easy to use and convenient for users to access the spout
- Prevents spills and leaks
- Tamper-evident design, ensures the integrity of the contents
- Allows for controlled pouring and dispensing of liquids, minimizing waste or over-pouring
How to Specify and Use It
Match the closure size to the bottle neck, 40mm or 50mm
Fit and seal the closure on the filling line before the pack is cased
At the point of use, pull the spout out until it locks before pouring
Push the spout back in and reclose the pack after partial use
Comparison With Other Products
Against a plain screw cap on the same bottle, the flex spout adds controlled pouring and a tamper tear at a higher unit cost. Against the engine oil bottle cap with induction seal, it is the dispensing option rather than the sealing option.
Customisation
Sizes, colours and materials can be adapted where the product allows it, and branding can be applied to closures and cap seals. Confirm the change you need when you send the enquiry.
Quality Control
United Packaging operates a professional quality control system under ISO 9001 certification, following quality management procedures intended to minimise the risk of defects.
Other Items in Closures for Jerry Cans

Jerry Can Vented Closure Tamper Evident
A Vented Seal That Shows If the Pack Has Been Opened
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1L 4L 5L Engine Oil Bottle Cap
Induction Sealed Caps for Oil Bottles and Small Jerry Cans
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Jerry Can Closure Screw Cap Tamper Evident
The Plain Tamper Evident Cap for Plastic Jerry Cans
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Plastic Water Butt Tap with Hose Connector
A Weatherproof Tap That Takes a Hose Straight Off the Butt
View detailsQuestions About Flex Spout Closure for Plastic Bottles
What sizes are available?
40mm and 50mm.
Which bottles does it fit?
1L, 4L and 5L plastic engine oil containers and bottles.
What materials are used?
PE and EVA.
Is it tamper-evident?
Yes, it has a tamper-evident design.
Can we specify a colour?
Yes, colours are customisable.
Does it need to be unscrewed to pour?
No, the spout pulls out and the cap stays on.
Get a Price on Flex Spout Closure for Plastic Bottles
Send the quantity, the specification variant and your destination port. We will come back with pricing and lead time.
