Lotion Pump

WH-P116 — the compatibility player. Formulations are getting harder on packaging: essential oils, exfoliating acids, high-alcohol content, and natural extracts all attack seals and swell plastics that were never tested against them. The P116 is the P-series pump we specify when chemical compatibility is the open question.

Its material selection and smooth-running mechanism tolerate a broader chemistry range, reducing the swelling, sticking, and stalling that show up weeks after filling — precisely when returns are most expensive to handle.

Manufacturer-direct from Kam Ling with compatibility guidance: send us your ingredient list under NDA if needed, and we will flag known risk pairings before you commit tooling. For formulas at the aggressive end, we run soak tests with your actual product on request.