Maymom Silicone Membrane Diaphragm for Spectra S1/S2/9 Plus Backflow Protector (Long/Medium/Short Stem) – Aftermarket

Overview

Maymom offers a silicone membrane diaphragm designed as an aftermarket option for Spectra S1, S2, and 9 Plus backflow protectors. It suits long, medium, and short stem configurations and is sold as a ready-to-use replacement part. Note that it does not fit older Spectra backflow protector versions; please compare visuals to ensure compatibility.

What this means for your routine

Regular diaphragm replacement can help preserve the pump’s feel and performance between full part upgrades. The diaphragm uses reinforced silicone, engineered for durability and a steady seal during expression — a practical upgrade for ongoing use.

• Compatibility with Spectra S1 S2 and 9 Plus backflow protectors, including long, medium, and short stem variants
• Regular replacement supports consistent suction and overall pump operation
• Durable silicone with reinforced construction for reliable use over time
• EU and US FDA compliant materials, with independent lab safety testing
• Retail packaging sealed by Maymom for easy handling and sanitation

Materials and safety

Designed with medical-grade silicone intended for repeated use in consumer devices. The material undergoes independent lab testing to support safety and quality, and the packaging helps ensure freshness and traceability.

• EU and USA FDA compliant for materials that contact food or consumer products
• Independent lab testing confirms quality and safety standards
• Retail packaging sealed by the manufacturer Maymom

Care and sanitation

Inspect the diaphragm before use and replace if you notice wear, cracking, or loss of elasticity. For sanitation, the part can be cleaned with boiling water or steam and then reassembled with your backflow protector.

• Safe to sanitize by boiling water or steam
• Choose the stem size that matches your backflow protector for a proper fit
• Store in the retail packaging to protect the diaphragm between uses
• Not compatible with older Spectra backflow protector versions; verify compatibility with product photos

Real-world use

Many caregivers appreciate a cost-conscious, easy-to-swap replacement that refreshes the pump’s feel without changing other components. The Maymom diaphragm provides a practical alternative for compatible Spectra backflow protectors, helping you maintain a smooth pumping routine.