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Updated: 06 Apr 2026

10 Best Diaphragm Seals

#1 Best Pick
Lyreh 5pcs 11228 and 2pcs 11412 Pool Pump Seal Gaskets, Black Rubber Pool L-Shape O-Ring Gaskets Compatible with Intex Sand Filter Pump Motors

Lyreh 5pcs 11228 and 2pcs 11412 Pool Pump Seal Gaskets, Black Rubber Pool L-Shape O-Ring Gaskets Compatible with Intex Sand Filter Pump Motors

Brand: Lyreh
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  • Product Content: You will receive 7 pieces of pool pump hose seal gaskets, including 5 pieces of 11228 gaskets and 2 pieces of 11412 gaskets. They are sufficient to meet your needs of usage and replacement.
  • Premium Material: The pool pump seals are made of quality rubber, sturdy, aging resistance, wear resistance and not easy to break or deform, ensuring you can use them for a long time. They also have excellent sealing performance, providing you much confidence to use it.
  • Product Size: The 11228 l-shaped o-ring gasket measures 5.6x5.6x1.4cm/2.2x2.2x0.55in and with inner diameter of 3.9cm/1.54in, outer diameter of 4.7cm/1.85in. The 11412 sand filter pump motor O-ring measures 5.6x5.6x0.9cm/2.2x2.2x0.35in and with inner diameter of 3.8cm/1.5in, outer diameter of 4.7cm/1.85in. They can perfectly fit your pump, easy for you to install. Please confirm the size before purchasing.
  • Compatibility: The pool pump seals are compatible with intex sand filter pump motors 26323CA, 26323EH, 26331CA, 26331EH, 26337EH, 26351EH, 26351W, 26361CA, 26361EH, 26361W, 26371CA, 26371EH, 26381EH, 28643EG, 28645EG, 28647EG, 28651EG, 28946EH, 28948EH. Please note that our product is not sponsored or endorsed by, or affiliated with the brands it fits, including intex.
  • Applicable Occasions: You can use the pool pump seals to replace your old gaskets, renew your sand filter pump motors and make your sand filter pump motors work on its best. They can help you effectively clean your pool and avoid leakage, making your clean work easier.
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#2 Best Value
Contoured Diaphragm Contraceptive Barrier Device - One Size Fits Most

Contoured Diaphragm Contraceptive Barrier Device - One Size Fits Most

Brand: MEDintim
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#3 Budget Pick
Baracuda Diaphragm Cassette for Zodiac Barracuda Pool Cleaner Retaining Ring

Baracuda Diaphragm Cassette for Zodiac Barracuda Pool Cleaner Retaining Ring

Brand: BIGTEDDY
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  • - Brand New and High Quality
  • - Strong and durable, giving your cleaner extended life, UV & Chlorine Resistant.
  • - Material: Plastic
  • - Size: as per picture shows
  • Compatible Models:
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#4 Top Choice
Toilet Tanks Inlet Valves Seal Diaphragm Ensures Hign and Easy Installation for Home or Commercial Use Silicone Seal Diaphragm

Toilet Tanks Inlet Valves Seal Diaphragm Ensures Hign and Easy Installation for Home or Commercial Use Silicone Seal Diaphragm

Brand: YiNLuax
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  • Ensures toilet tanks with Valves seal diaphragm, designs to enhances water efficiency and
  • Craft from silicone materials, this diaphragm is easy to installion with various toilet tanks brands, ensuring long time use reliability
  • Upgrades your bathroom fixtures with this dependable toilet tanks accessory for any comprehensive plumbing toolkit
  • For homeowners, property maintenance personnel, and craft enthusiasts seek efficient plumbing solution
  • For both residential and commercial bathroom setting, this diaphragm accessory for maintaining and repairing toilet tanks
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#5 Popular Choice
Duckbill Valves & Silicone Diaphragm Replacement Parts Compatible with Momcozy M5 Wearable Breast Pump – BPA-Free Food-Grade Silicone Accessories (6 Pack: 4 Valves + 2 Diaphragms)

Duckbill Valves & Silicone Diaphragm Replacement Parts Compatible with Momcozy M5 Wearable Breast Pump – BPA-Free Food-Grade Silicone Accessories (6 Pack: 4 Valves + 2 Diaphragms)

Brand: MilkFlow
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  • Perfect Compatibility for Momcozy M5: 6-piece replacement set includes 4 duckbill valves + 2 silicone diaphragms – seamless fit for Momcozy M5 wearable breast pump. Restores strong, consistent suction and prevents leaks like original parts
  • BPA-Free Food-Grade Silicone – Safe & Odorless: Premium transparent food-grade silicone: soft, durable, completely BPA-free, and odorless. No harmful chemicals – ensures safe, gentle pumping for mom and baby every time
  • Strong Suction & No Backflow: Duckbill valves create one-way milk flow to the container bottom, eliminating backflow and weak suction issues. Silicone diaphragms maintain airtight seal to avoid milk leakage – efficient, mess-free sessions
  • Closed System Design for Hygiene: Prevents milk from contacting the pump motor, protecting your device and keeping everything clean. Stronger seal draws more milk comfortably without loss of suction
  • Easy to Clean & Sterilize: Rinse with warm soapy water after each use; sterilize via steam, boiling water (≤100°C/212°F for 5-10 mins), or microwave steam bags. Simple design with no hidden crevices – hygienic and quick
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#6 Top Pick
Momcozy Duckbill Valves & Silicone Diaphragm Compatible with Momcozy S9 Pro/S12 Pro. Original S9 Pro/S12 Pro Pump Replacement Accessories, 1 Pack

Momcozy Duckbill Valves & Silicone Diaphragm Compatible with Momcozy S9 Pro/S12 Pro. Original S9 Pro/S12 Pro Pump Replacement Accessories, 1 Pack

Brand: Momcozy
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  • Momcozy diaphragm and duckbill valve accessories can perfectly meet the accessories you need when using Momcozy S9 Pro/S12 Pro breast pump. The diaphragm is used to help the breast pump maintain the seal to prevent milk leakage. The duckbill valve can be used to drain milk to the bottom of the container.
  • The authentic Momcozy wearable breast pump duckbill valves & silicone diaphragm accessories are suitable for use with Momcozy S9 Pro/S12 Pro wearable breast pump.
  • BPA-free, made of food-grade silicone material. All Momcozy pump parts that come in contact with breast milk are BPA-free, giving you peace of mind about your baby's milk.
  • Made for moms, by moms. We`ve committed our lives to provide the best breast pumps, accessories, education, and customer care that we can, supporting every mother with the beauty of parenthood. Meeting moms pump wherever, without hassle needs.
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#7 Top Pick
SENECESLI 4pcs Duckbill Valves and 2pcs Silicone Diaphragm for S21 Wearable Breastfeeding Pump Replacement Pump Parts, Leak Prevention

SENECESLI 4pcs Duckbill Valves and 2pcs Silicone Diaphragm for S21 Wearable Breastfeeding Pump Replacement Pump Parts, Leak Prevention

Brand: SENECESLI
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  • Leak Prevention Design: Breastfeeding pump membrane is engineered to create a seal, effectively preventing any milk leakage during pumping sessions. This duckbill valves ensures that the milk flows down to the container at the bottom.
  • Food Grade Silicone Material: Made from food grade silicone, replacement membranes and duckbill valves are safe but also soft and odorless. Suitable for nursing mothers, ensuring that it is gentle on the skin.
  • Compatibility: These breastfeeding pump components are specifically designed for S21 wearable breastfeeding pump. Every part fully meets the operational requirements of your device, guaranteeing consistent and efficient performance.
  • Easy Cleaning: After each use, you can easily wash them with warm soapy water and rinse thoroughly. This convenience helps ensure that your breastfeeding pump components are always ready for the next use.
  • Versatile Cleaning Options: These duckbill valves and silicone diaphragm can be cleaned in several effective ways, including steam cleaning, boiling water, or microwave steam bags. This adaptability in cleaning methods ensures a clean environment for your baby's feeding needs.
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#8 Top Pick
Simhoa Replacement Duckbill Valves and Diaphragm Seal for M5 Wearable, 12Pcs

Simhoa Replacement Duckbill Valves and Diaphragm Seal for M5 Wearable, 12Pcs

Brand: Simhoa
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  • 【Leakaproof Design】: Say goodbye to annoying leaks with our specially designed diaphragms that create a secure seal to prevent milk leakage. The silicone duckbill valves also prevent milk backflow, ensuring a worry pumping
  • 【Easy To Clean And Maintain】: Cleaning these accessories is a . Simply wash the duckbill valve and silicone diaphragms with warm soapy water after each use, rinse with clean water, and let them air dry. They can also be cleaned using steam, boiling water, or a microwave steam bag
  • 【Easy To Use And Replace】: This set of wearable electric bust pump accessories includes diaphragms and duckbill valves to perfectly meet all your accessory needs. Easily replace worn out parts for uninterrupted pumping
  • 【Compatibility】: Our repace parts diaphragms and duckbill valves are suit for M5 wearable bust pumps. Enjoy a hassle pumping experience with these silicone accessories
  • 【Comfortable Material】: Made from soft silicone material, these duckbill valves accessories ensure a comfortable pumping experience
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#9 Top Pick
Wzenclave 2 Pack Pool Cleaner Diaphragm with Retaining Ring Made from Heavy Duty Rubber G3 G4 Diaphragm Replacement for Zodiac Baracuda G2 G3 G3 PRO G4 and Vingli Pool Cleane Diaphragm W69698

Wzenclave 2 Pack Pool Cleaner Diaphragm with Retaining Ring Made from Heavy Duty Rubber G3 G4 Diaphragm Replacement for Zodiac Baracuda G2 G3 G3 PRO G4 and Vingli Pool Cleane Diaphragm W69698

Brand: Wzenclave
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  • 【Premium Quality】: High-quality rubber, well-tested replacement parts ensure your pool cleaner performs to required standards after installation.
  • 【Packaging Details】: Includes 2 yellow silicone diaphragm replacement parts and 2 buckle rings for convenience.
  • 【Accurate Size】: Replacement part measures 15cm in length, 4.6cm in width, with a buckle diameter of 3.5cm.
  • 【Quick Installation】: Hassle-free, plug-and-play design for fast and easy pool cleaner repair.
  • 【Enhanced Functionality】: Maintains pool cleaner efficiency, keeping your pool crystal clear and free of debris.
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#10 Top Pick
Momcozy M5 Diaphragm, Original Breast Pump Replacement Accessories for M5, 2PCS

Momcozy M5 Diaphragm, Original Breast Pump Replacement Accessories for M5, 2PCS

Brand: Momcozy
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  • The authentic Momcozy wearable breast pump silicone diaphragm accessories are suitable for use with Momcozy M5 wearable breast pump. Momcozy Original Parts FSA/HSA is eligible.
  • Easy cleaning, wash Momcozy M5 pump parts after each use with warm soapy water and rinse well. Please clean with a temperature of ≤100℃(212℉)for 5-10mins.
  • BPA-free, made of food-grade silicone material. All Momcozy pump parts that come in contact with breast milk are BPA-free, giving you peace of mind about your baby's milk.
  • Made for moms, by moms. We`ve committed our lives to providing the best breast pumps, accessories, education, and customer care that we can, supporting every mother with the beauty of parenthood. Meeting moms pump wherever without hassle needs.
  • Momcozy diaphragm accessories can perfectly meet the accessories you need when using the Momcozy M5 breast pump. The diaphragm is used to help the breast pump maintain the seal to prevent milk leakage. The duckbill valve can be used to drain milk to the bottom of the container.
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