Nenesupply 21mm Flanges – 2 Pack for Spectra S2/S1/9 Plus & Synergy Gold

Overview

Nenesupply presents a practical 2 pack of 21mm flanges designed to work with Spectra S2, S1, 9 Plus, and Synergy Gold breast pumps. These are not original Spectra parts, but they mirror the wide-mouth design many users prefer. The 21mm size offers a balanced fit that can be comfortable for a range of body shapes, and the flanges are crafted to fit securely with compatible Spectra valves, backflow protectors, and bottles, as well as with Nenesupply bottles. The flange funnel has smooth angles and a tunnel length of at least 32mm, intended to glide past the nipple without rubbing. In daily use, this setup aims to preserve suction consistency while providing a dependable alternative for routine pumping sessions.

Design and Comfort

Designed with gentle curves and a generous funnel, these flanges minimize rubbing and allow a natural pumping posture. The long tunnel supports extended sessions and stretched nipples, helping you stay comfortable as you bottle-share or back-to-back pump. The 2-pack gives you a spare option for quick swaps during busy days.

• 2 small 21mm flanges included, made by Nenesupply
• Wide-mouth design interchanges with Spectra valves, backflow protectors, and bottles
• Compatible with Spectra bottles and Nenesupply bottles
• Bottles fit securely on the flanges, reducing guesswork
• Backflow protectors form an air-tight seal with the flanges

Care, Safety, and Materials

Dishwasher safe on the top rack and safe to sterilize with boiling water, steam, or microwavable bags, these parts are BPA Free and DEHP Free. They meet FDA guidelines for food contact materials and have been tested by independent labs to verify safety for regular use in daily routines. A straightforward cleaning routine helps you keep them ready for the next session.

Fit, Use, and Options

While this listing focuses on 21mm flanges, the brand notes multiple sizes are available, including 15, 17, 19, 21, 24, 27, and 30mm, to help you tailor fit and comfort. Backflow protectors seal securely, and bottles attach firmly to the flange, maintaining consistent suction and a reliable feeding setup. If you already own Spectra components, these flanges are designed to integrate with your existing system and offer a budget-friendly alternative that does not pretend to be the original Spectra parts.

What it Means for You

Consider this pair as a flexible, budget-conscious option to expand pump compatibility. They offer a practical way to swap in reliable parts when you need replacements or a different fit, all from a trusted brand, NENESUPPLY. Individual experiences may vary, but many parents appreciate the ease of cleaning, secure fittings, and the potential for a comfortable pumping rhythm.