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Syringe Barrel Pistons

Optimum® SmoothFlow™ pistons feature unique channels that prevent air entrapment while providing a smooth profile radius to reduce fluid shear. 

Precision wiping edges clean the syringe interior as fluid is dispensed, eliminating waste and residue.

Our pistons fit perfectly inside Optimum syringe barrels to ensure uniform dispensing force and prevent dripping and oozing between shots. These components work as a system to provide accurate, consistent fluid deposits.

Precision molded in six unique styles, Optimum pistons ensure precise control for virtually any fluid in any application, including:

White SmoothFlow™ (General Purpose)
For use with most fluids.

Red SmoothFlow (Tight Fit)
For use with mechanical dispensing equipment.

Beige SmoothFlow (Loose Fit)
Loose-fitting pistons are used with air-entrapped fluids.

Orange Flatwall
Flat-walled pistons have a looser fit to prevent “bouncing” when dispensing stringy, air-entrapped fluids.

Blue LV Barrier
LV Barrier pistons are used with cyanoacrylates and very low viscosity fluids.

Clear Flex
Flex pistons are flexible and reduce “bouncing” in viscous fluids while maintaining excellent wall-wiping.

View all syringe barrel system components.

Safety Data SheetsView important safety information.


Part # Size Color Qty/Box
7012419 2.5, 6, 12 fl oz (75, 180, 360 ml) White 25
7362087 2.5, 6, 12 fl oz (75, 180, 360 ml) Blue 25
7012421 20, 32 fl oz (600, 960 ml) White 10
Part # Size Color Qty/Box
7012420 2.5, 6, 12 fl oz (75, 180, 360 ml) White 250
7362086 2.5, 6, 12 fl oz (75, 180, 360 ml) Blue 250
7012422 20, 32 fl oz (600, 960 ml) White 100