Top 12 Diaphragm Seals

In many industries, to prolong the life of the machines, many types of equipment are installed. They must be extreme temperature and pressure resistant. However, they do fail sometimes! To come across this problem, a diaphragm seal is the best option. Look for all the features that are discussed here!

Browse Best Diaphragm Seals

Alsons 49130BG Diaphragm Repair Kit

  • Brand Name: Alsons
  • Model Name: 49130BG
  • Item Weight: 0.8 ounces
  • Satisfaction Score: 90%
  • Overall Score: 8.5
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PONDAIR - 4 Replacement Diaphragm Kit

  • Brand Name: Airmax
  • Model Name: 120921
  • Satisfaction Score: 80%
  • Dimensions: 12 x 12 x 12 inches; 10 Pounds
  • Overall Score: 7.3
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Hypro 9910-KIT1723 Diaphragm Repair Kit for D252, D19

  • Brand Name: Hy-Pro
  • Model Name: 9910-KIT1723
  • Item Weight: 3.84 ounces
  • Satisfaction Score: 80%
  • Dimensions: 8.43 x 4.17 x 1.34 inches; 3.84 Ounces
  • Overall Score: 8.3
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KOHLER K-1095910 Diaphragm Assembly

  • Brand Name: KOHLER
  • Model Name: 1095910
  • Item Weight: 0.32 ounces
  • Satisfaction Score: 100%
  • Dimensions: 1.25 x 1.25 x 1.04 inches
  • Overall Score: 9.9
Store Website:

POSEAGLE Carburetor Repair Kits with Walbro 95-526 Metering Diaphragm (Pack ...

  • Brand Name: POSEAGLE
  • Item Weight: 2.08 ounces
  • Satisfaction Score: 74%
  • Dimensions: 6.18 x 5.35 x 1.38 inches
  • Overall Score: 5.9
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Honda Q14-0000-056H Diaphragm Neoprene

  • Brand Name: Honda
  • Model Name: Q14-0000-056H
  • Item Weight: 4 ounces
  • Satisfaction Score: 100%
  • Overall Score: 9.9
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Pondmaster Replacement Diaphragm Kit for AP-20 [Misc.]

  • Brand Name: PondMaster
  • Satisfaction Score: 100%
  • Dimensions: 4 x 3 x 0.08 inches; 3.21 Ounces
  • Overall Score: 9.3
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Wacker Neuson 3″ Diaphragm for later PDT3A, PDI3 diaphragm pumps Oem ...

  • Brand Name: Wacker Neuson
  • Model Name: 180238
  • Satisfaction Score: 100%
  • Overall Score: 0
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GOYEN K4502 Diaphragm KIT

  • Brand Name: GOYEN
  • Model Name: 192698078976
  • Item Weight: 1.00 pounds
  • Overall Score: 0
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KollerCraft TOM Replacement Diaphragm for Aqua Lifter Dosing Pump

  • Brand Name: KollerCraft
  • Model Name: TM1145
  • Satisfaction Score: 62%
  • Dimensions: 3.75 x 2.25 x 1 inches; 2.4 Ounces
  • Overall Score: 6.9
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Peavey 44XT

  • Brand Name: Peavey
  • Model Name: 44XTD
  • Color Options: Metallic
  • Item Weight: 1 pounds
  • Satisfaction Score: 100%
  • Dimensions: 6.5 x 5.4 x 1.8 inches
  • Overall Score: 9.9
Store Website:

Udor 8700.02 Diaphragm Repair Kit for Kappa 30/40/T35 - Desmopan

  • Brand Name: Rittenhouse
  • Model Name: jup_8700_02
  • Item Weight: 220 pounds
  • Satisfaction Score: 100%
  • Dimensions: 39.37 x 39.37 x 19.69 inches
  • Overall Score: 9.9
Store Website:

Diaphragm Seals Buying Guide

Not all applications need diaphragm seals. Before making a purchase, one must know if they need a seal for their application or not. Applications that involve high temperature, viscous materials, corrosive materials, and suspended solids must have a diaphragm seal. Hence, choose the one that is mandatory for the environment.

Look for the type of process connections

There are mainly four ways in which a diaphragm is connected to the apparatus. They include threaded, flanged, sanitary, and in-line. In a threaded type, either a male or female NPT is used for the connection.  In an in-line type, it is welded with the machine. While, in flanged as the name suggests, it uses a flange. There are many types of flanges too. Whereas, a sanitary type is used in places that require heavy hygiene.

Some of the technical aspects include:

To have a long-lasting diaphragm seal, inspect some of the most significant aspects like the connecting size, composition of the seals, and the fill fluid compatibility. Always make sure to buy the correct size diaphragm seal to avoid leaking. In standard terms, it can fit ½’’ and ¼’’ NPT. Most of the lower parts of the diaphragm and seal get exposed to the medium. Hence, verify if it is compatible. Also, do not forget to have a check in the fluid type.

Type of the diaphragm matters too!

Similar to the above, the type of diaphragm is also of four types. They are threaded design, clamped, welded, and bonded design. A clamped and bonded design is similar to each other wherein clamped design, the diaphragm is connected between the top and bottom parts. Whereas in the bonded design, it is connected to the top part alone. Both are great for elastomeric applications. The threaded one is easy to replace when damaged.

Categories Simillar to Diaphragm Seals

Categories Simillar to Diaphragm Seals includes Sheet Gaskets, Spiral Wound Gaskets and Tape Gaskets