PumpMom-us 21mm Flanges for Spectra S2/S1/S9 Plus – Replacement Breast Shields & Duckbill Valves

Introducing PumpMom-us 21mm Flanges for Spectra S2, S1, and S9 Plus

Refresh your pumping kit with the PumpMom-us 21mm flange set, designed as a practical replacement for Spectra S2, S1, and 9 Plus pumps. This bundle includes two 21mm shields and two duckbill valves, offering a ready-to-use option when you’re updating parts. While these are not official Spectra components, they’re crafted to align with your pumping rhythm and support steady sessions during busy days.

Smart design for a better pump

The flex shield features an upgraded 105° wide-angle opening and an oval profile, which can help align with the natural curve of the breast. The result is a more secure seal and smoother flow during expression, especially when you’re juggling feeding, work, and family responsibilities.

• 105° wide-angle opening designed to align with your body for a comfortable fit.
• Oval shield shape supports a natural fit during longer pumping sessions.
• Soft rim on the flex shield reduces edge irritation for a gentler feel.

Materials and safety basics

Crafted from food-grade polypropylene (PP) and free from BPA and DEHP, these flanges are sealed by the manufacturer to help preserve integrity from packaging to use.

• Food-grade PP material is durable for daily use.
• BPA- and DEHP-free composition minimizes exposure to common additives.
• Manufacturer seal helps ensure product integrity at purchase and beyond.

Compatibility and what’s included

Built to fit Spectra S2, S1, and Spectra 9 Plus pumps, this set includes two 21mm flanges and two duckbill valves, giving you a straightforward replacement option that can refresh your pumping kit without needing multiple parts.

Real-life use ideas

Use these flanges as a reliable replacement when your current shields wear down, or keep a spare set on hand for busy days. The combination of a comfortable shape, secure fit, and practical materials makes pumping easier when you’re balancing a growing family and a packed schedule.