410 vs 415 Neck Finish Pump Fitment: Skirt Height, Thread Engagement, and Liner Compression
Compare 24-410 and 24-415 neck heights, check pump skirt clearance and gasket contact, and use an assembly checklist before approving a pump swap.
#dispensing
Airless Pump Bottle Engineering: Piston Interference Fit, 360-Degree Vacuum Dispensing, and Headspace Priming
Engineering specification for an airless pump bottle: ±0.03 to 0.08 mm piston tolerance, 360-degree vacuum dispensing, <3% to 5% residual waste vs. amber glass dropper bottles, and priming.
Foam Pump Bottle Engineering: Dual-Stage Mesh Ratio, Air-to-Liquid Compression, and Liquid Viscosity Limits
Engineering specification for a non-aerosol foam pump bottle: coaxial 10:1 air-to-liquid pistons, 100/200-mesh screens, the 100 cP viscosity limit, and mesh back-flushing.
Lotion Pump Bottle Specifications: GPI Neck Finishes, Stroke Dosage, and Dip Tube Sizing
Engineering specification reference for a lotion pump bottle: GPI 20/410 to 28/410 neck finishes, ASTM D3198 torque, 0.5 to 4.0 cc stroke dosage by viscosity, and FBOG dip tube sizing.