Maymom Pump Parts Compatible with Spectra S2 S1 - Complete 13mm Kit

In this review the Maymom pump parts kit is judged as a practical, budget-friendly replacement for Spectra S2, S1 and 9 Plus users who need a full set of spare components. The single biggest reason to buy is convenience: the kit includes 13mm flanges, duckbill valves, backflow protectors, tubing and bottles with one-piece travel caps so a parent can replace every wear item at once. This review is aimed at mothers who have already measured their nipple flange size and want an affordable OEM-compatible alternative.

Key Features

• Complete kit: Includes 2 flanges (13mm), 2 duckbill valves, 2 backflow protectors, 2 tubes and 2 bottles with one-piece travel caps so users replace all common wear parts at once.
• Compatibility: Designed to fit and interchange with Spectra S2, Spectra S1 and Spectra 9 Plus pumps, keeping the same suction power as OEM parts.
• Travel-ready bottles: One-piece caps include a sealing ring for a secure seal, useful for travel and short-term milk storage without extra parts.
• Safety tested: US FDA registered medical device with additional Health Canada and Australian listings, and materials tested for food contact compliance.
• BPA free and easy to clean: Parts contain no BPA and can be sterilized by steam, boiling water or microwave-steam bags for simple care.
• Multiple flange sizes available: While this kit is 13mm, Maymom offers many flange sizes so mothers can find an appropriate fit if 13mm is not right.

Who It's For

This kit is best for mothers using a Spectra S2, S1 or 9 Plus who have already measured nipple diameter and find a 13mm flange suitable (measure after pumping; the kit fits a nipple diameter around 11-12 mm). It is also a good choice for parents who prefer replacing multiple parts at once or need travel-friendly bottles with secure caps.

Those who should look elsewhere include mothers who have not measured flange size yet or who require larger flange sizes; Maymom sells other flange diameters, but this specific 13mm kit will not be comfortable or effective for everyone. Also note nipples and dome caps are not included, so users who need feeding nipples should purchase them separately.

Pros & Cons

Pros

• Full replacement set covers all common wear items so pumps are quickly restored to working order.
• Compatible with Spectra pumps and reported to match OEM suction performance in many user experiences.
• Travel caps with sealing rings reduce spill risk when storing or transporting milk.
• FDA registration and international listings provide reassurance about material safety.

Cons

• Durability concerns reported by some users; a few parts may wear faster than expected under heavy use.
• 13mm flanges are small and not suitable for every mother, so sizing must be checked before purchase.

Specifications

Kit contents	2 flanges (13mm), 2 duckbill valves, 2 backflow protectors, 2 tubes, 2 bottles with one-piece travel caps
Compatible pumps	Spectra S2, Spectra S1, Spectra 9 Plus
Flange size included	13mm (other sizes available from manufacturer)
Material safety	BPA free, FDA registered medical device
Cleaning	Water steam, boiling water, microwave-steam bags
Included caps	One-piece travel caps with sealing ring

Our Verdict

The Maymom 13mm pump parts kit is a sensible, cost-effective way to replace all common Spectra-compatible components at once, particularly for mothers who confirm the 13mm flange fits them. It pairs good material safety credentials and travel-ready bottles with broad compatibility, making it strong value for the price, though those needing greater durability or a different flange size should consider alternatives.

Frequently Asked Questions

Will these parts fit my Spectra pump?
Yes, they are designed to be compatible with Spectra S2, S1 and 9 Plus models, but confirm your model uses wide-mouth bottles and that a 13mm flange fits you.

Are feeding nipples included?
No, nipples and dome caps are not included in this kit; the bottles come with one-piece travel caps and sealing rings only.

How should I clean these parts?
Parts are BPA free and may be cleaned with water steam, boiling water or microwave-steam bags according to the manufacturer guidance.