Silicone Breast Pump Diaphragm Replacement – Leak-Proof Membrane

Keep Your Breast Pump Working Like New

Worn or damaged pump membranes are one of the most common reasons for reduced suction and milk leakage. This food-grade silicone breast pump diaphragm is the quick, affordable fix every breastfeeding mom needs in her kit. Soft, flexible, and durable, it restores your pump's performance so you can enjoy a smooth, uninterrupted expression session — whether you're at home, at the office, or on the go.

Made in Mainland China.

This product is a breast pump accessory/replacement part and is not a drug or medical treatment. Always consult your healthcare provider with questions about breastfeeding or breast pump use.

Why You'll Love It

• 🍼 Premium Silicone Material – Made from soft, BPA-free silicone (silica gel) with no high-concern chemicals, safe for use around milk and baby.
• 🔒 Leak-Proof Design – Creates a reliable seal to prevent milk leakage during pumping sessions.
• ⚡ Stable Suction Performance – Restores consistent pump suction, so every drop counts.
• 🏠 Use Anywhere – Perfect for home or workplace pumping; a must-have backup accessory.
• 📏 Compact & Lightweight – Approx. 3.5 × 5.4 cm (1.38 × 2.13 in), easy to carry in your pump bag.
• 🔄 Easy to Replace – Simply swap out the old membrane in seconds — no tools required.
• 👶 Suitable for Ages 0–36 Months – Covers your entire breastfeeding journey from newborn through toddler.

Specifications

Important Notes

• Please allow ±1–2 cm measurement tolerance due to manual sizing.
• Slight color variations may occur due to different screen resolutions.
• Compatibility tip: Please measure your current diaphragm before ordering. If the dimensions match, this part will work for your pump.

Great Accessories to Pair With

Looking for more personal care essentials? Check out these related products from our store:

• 1.3L Cool Mist Humidifier with LED Night Light & Dual Spray – Keep your nursing space comfortable and well-humidified.
• Lip Sleeping Mask Intense Hydration with Vitamin C – Self-care essentials for tired moms.

Helpful Breastfeeding Resource

For evidence-based guidance on breastfeeding, pumping, and infant nutrition, visit the CDC Breastfeeding Resources — your go-to source for tips on safe and successful pumping.

Frequently Asked Questions

Q: How do I know if this silicone breast pump diaphragm will fit my pump?

A: The key is to measure your existing diaphragm or membrane. This replacement measures approximately 3.5 × 5.4 cm (1.38 × 2.13 inches). If your current membrane matches these dimensions, this diaphragm should be compatible with your breast pump. When in doubt, compare both measurements before use.

Q: How often should I replace my breast pump diaphragm?

A: Breast pump membranes and diaphragms should generally be replaced every 1–3 months with regular use, or sooner if you notice reduced suction, visible wear, or milk leakage. Keeping spare diaphragms on hand ensures your pump always performs at its best.

Q: Is this silicone diaphragm safe for use with breast milk?

A: Yes. This replacement diaphragm is made from soft silicone (silica gel) with no high-concern chemicals listed, making it suitable for contact with breast milk. Always clean and sterilize replacement pump parts before first use according to the manufacturer's instructions.

Q: Can I use this diaphragm if I'm pumping for a newborn?

A: This accessory is suitable for use across age ranges from 0–36 months. It supports your pumping needs from the very first days of feeding through toddlerhood. Always ensure your entire pump setup is properly assembled and clean before each session.