Capping and closuresHow do I stop leaks, tilt or poor seating with disc-top caps?
Practical guidance for disc-top caps: improve appearance, seal, closure, code, dose and transport performance.
Read the answer →Production guide
Caps, lids and closures
Diagnose leakage, cross-threading, variable torque, cap damage and closure-feeding faults. Find the product, pack or process closest to your application and then choose the fault you can see.
18topic guides
324question-and-answer pages
18problem routes per topic
13specialist solution routes
Choose what is closest to your application
Capping and closures topics
Closure performance depends on cap and neck compatibility, presentation, seating, container support and controlled application force or torque.
18 answers
Screw caps
Threaded closures controlled by seating, engagement and application torque.
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18 answers
Pump caps
Dispensing pumps with dip tubes that need controlled orientation and insertion.
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18 answers
Trigger sprays
Large asymmetric closures with long dip tubes and a defined handle orientation.
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18 answers
Flip-top caps
Hinged closures that may require cap orientation and controlled torque.
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18 answers
Disc-top caps
Dispensing closures where orientation and finish quality affect presentation.
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18 answers
Twist-off jar lids
Lugged metal closures often linked to hot fill or vacuum processes.
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18 answers
Vacuum jar lids
Closures whose final performance depends on the thermal and vacuum process.
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18 answers
Ropp caps
Aluminium closures formed onto a compatible bottle finish by rollers.
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18 answers
T-corks
Bar-top closures pressed into a compatible bottle opening.
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18 answers
Press-on caps
Closures applied by controlled axial force rather than thread torque.
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18 answers
Snap caps
Closures that engage a bead or feature and require even seating.
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18 answers
Child-resistant caps
Closures whose application must preserve the intended opening function.
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18 answers
Tamper-evident caps
Closures with bands, bridges or rings that must remain intact after application.
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18 answers
Aluminium screw caps
Metal threaded caps sensitive to scuffing, deformation and head setup.
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18 answers
Sports caps
Multi-part dispensing closures that may need orientation and specialised feeding.
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18 answers
Dropper caps
Small closures with pipettes or droppers requiring gentle insertion and torque.
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18 answers
Stoppers
Plugs inserted to a controlled depth before an overcap or final closure.
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18 answers
Bungs
Larger plugs or closures used on industrial containers and drums.
Open guide →Common starting points
Search all 324 answers →Popular capping and closures questions
Capping and closures
Capping and closuresHow do I stop leaks, tilt or poor seating with flip-top caps?
Practical guidance for flip-top caps: improve appearance, seal, closure, code, dose and transport performance.
Read the answer →
Capping and closuresHow do I stop leaks, tilt or poor seating with pump caps?
Practical guidance for pump caps: improve appearance, seal, closure, code, dose and transport performance.
Read the answer →
Capping and closuresHow do I stop leaks, tilt or poor seating with screw caps?
Practical guidance for screw caps: improve appearance, seal, closure, code, dose and transport performance.
Read the answer →
Capping and closuresHow do I stop leaks, tilt or poor seating with trigger sprays?
Practical guidance for trigger sprays: improve appearance, seal, closure, code, dose and transport performance.
Read the answer →
Capping and closuresHow do I stop leaks, tilt or poor seating with twist-off jar lids?
Practical guidance for twist-off jar lids: improve appearance, seal, closure, code, dose and transport performance.
Read the answer →
Capping and closuresWhat information is needed to specify a capper for disc-top caps?
Practical guidance for disc-top caps: capture samples, dimensions, output, acceptance tests and site constraints before buying.
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Capping and closuresWhat information is needed to specify a capper for flip-top caps?
Practical guidance for flip-top caps: capture samples, dimensions, output, acceptance tests and site constraints before buying.
Read the answer →
Capping and closuresWhat information is needed to specify a capper for pump caps?
Practical guidance for pump caps: capture samples, dimensions, output, acceptance tests and site constraints before buying.
Read the answer →Common search questions
Questions customers also ask
Open a question for a concise answer, then use the detailed guide above for the full production checks.
What should I know about screw caps?
Threaded closures controlled by seating, engagement and application torque.
What should I know about pump caps?
Dispensing pumps with dip tubes that need controlled orientation and insertion.
What should I know about trigger sprays?
Large asymmetric closures with long dip tubes and a defined handle orientation.
What should I know about flip-top caps?
Hinged closures that may require cap orientation and controlled torque.
What should I know about disc-top caps?
Dispensing closures where orientation and finish quality affect presentation.
How should I use the Caps, lids and closures page?
Diagnose leakage, cross-threading, variable torque, cap damage and closure-feeding faults.