







Price: $34.99 - $32.99
(as of Nov 25, 2025 18:44:00 UTC – Details)
From the brand


Maymom One-piece Flange
Maymom Detachable Shield
Maymom Base Connector
Maymom Flange Insert
Maymom Duckbill Valve
Maymom Storage/Feeding Bottle
Maymom Bottle Caps
Maymom Storage Bag Adapter
Maymom Bottle Converter
Maymom Tubing
Backflow Protector & Diaphragm
Other Products

Maymom cares for each mom
Maymom always cares about mothers’ needs on the path of breastfeeding. For years, we hear mothers’ voice for customized, comfortable and easy-to-use tools.
Maymom makes a wide range of aftermarket pump parts including flange, tubing, duckbill valve, backflow protector, collection bottle, milk storage bag adapter, and various kinds of adapters to bridge different systems of name brand breastpumps.
Is Discontinued By Manufacturer : No
Product Dimensions : 5.91 x 4.72 x 3.15 inches; 12.63 ounces
Manufacturer recommended age : 0 months and up
Item model number : S001W-F
Date First Available : December 13, 2018
Manufacturer : Maymom
ASIN : B07LBD522D
Customer Reviews: 4.6 4.6 out of 5 stars 8,875 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
The incl. 24mm flanges are not suitable for all mothers. Please refer to the size guidance in the product listing before purchase. Suitable for mothers with a niple diameter of 22–23mm (measured after pumping). Kit Contents: 2 Flanges (24mm), 2 Duckbill Valves, 2 Backflow Protectors, 2 Tubes, and 2 Bottles with One-Piece Travel Caps. Compatible with Spectra S2, Spectra S1, and Spectra 9 Plus breast pumps. Nipples and dome caps are not included in this kit.
All pump parts made by Maymom. Not Original Spectra S2 Accessories. Not Original Spectra S1 Accessories. Not Original Spectra Pump Parts.
Compatible and interchangeable with Spectra pump parts. Same suction power as OEM parts. Replace Spectra Flanges, Spectra Duckbill Valves, Spectra Backflow Protectors, Spectra Tubings, Spectra Bottles (Wide Mouth). Multiple flange sizes available: 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 27mm, 28mm, 30mm, 32mm.
The One-piece cap of Maymom bottle includes sealing ring for secure seal. NO waste of milkdrop. Designed for travel and storage of formula or breast milk. It’s also perfect to convert baby feeding bottle to snack container or tumbler for mommy.
US FDA registered medical device (No. D192499), Health Canada License (No.26003), Australian Health and Aged Care (ID 463470). Inspected by US FDA. Comply with FDA/EU regulations for plastic materials that contact food. Test reports are conducted by independent lab and available online for reference.
Material does NOT contain any BPA. Can be cleaned with water steam, boiling water or microwave-steam bags. Retail packed, sealed by the manufacturer – Maymom, not original Spectra parts.
13 reviews for Maymom Pump Parts Compatible with Spectra S2 S1 Replacement Kit for Spectra Pump Parts 24 mm Flange Duckbill Valve Tube Bottle Backflow Protector, Not Original S2 S1 Accessories
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$32.99

Katelyn Gilreath –
Nice Pump Parts | Compatible with Spectra S2
Compatible with my Spectra S2 with a better price point than most others. I’m not an overproduced so I loved the shape of these bottles, they didn’t feel like they hang down or stick out far. I have not had any leaking issues. I love that you can buy your specific flange size without needing an adapter. The extra tubing, duckbill valves, and lids for the bottles are great to keep on hand at all times. I would definitely recommend this product.
Letha M. –
Great set!
I wish I would have got this first before buying a different more expensive set. Almost bought two of this set because it was so good. Identical quality to the spectra brand and these parts worked seamlessly with the pump.
payton –
YES
Amazing quality for parts that aren’t necessarily Spectra brand! Needed some extra pump parts that could help me save some semblance of sanity with all of the dishwashing, and these definitely fit the bill! The price was perfect for the value, and I recommend these extra parts be on hand for any pumping mama.
Joshua Fox –
These work so well!
I needed replacement parts for my spectra breast pump and ordered these. They’re awesome and work just as well as the original pieces my pump came with! I will order again if I need to next time around
Bernie –
Great quality backup pump parts for the spectra
Perfectly compatible with the spectra pump! It is so convenient to have extra pump parts when you’re in a pinch to wash them. These seem like great quality.
Kristen –
Better than OEM
Works great with my spectra s2. I actually prefer these compared to my spectra flanges as I have to use an insert with those. Took away 1 star because the one flange got a crack in it after 2 months of use.
Airielle –
Works well with Spectra pump
Sizing was perfect and came with lots of parts
Naomi Pichardo –
Happy customer
So happy I found this parts for my spectra!Love them
emilie anne –
They fit well, nice enough quality, they worked interchangeably with all my original spectra parts. Nothing to complain about
Amazon Customer –
A part broke after a month of use
Maria –
Van geniales para el espectral.Lo veo de muy buena califidad.Libres de bpa.
LN –
Works perfectly with my breast pump. Wanted to have a new set for my second baby as my pump was still good to use. Happy with it.
Megan –
Works awesome, just like spectra parts. Comfortable and able to use inserts to change size