Ametek S Series Seals - Automation Service

Ametek S Series Seals

Ametek Seals from Automation Service

S Series Seals

Ametek - U.S. Gauge

S Series Seals

Diaphragm Seals / Capillaries

Description - Economical seal incorporates a diaphragm welded permanently to the top housing. Welded metal seals are ideal for general-purpose applications with ranges from 15 to 2,500 psig at 100°F (1 to 176 bar at 38°C).

Optional ranges are available up to 20,000 psig (1406 bar). The ST Series is available for vacuum applications with ranges down to 29" Hg (736 mm Hg).

Mansfield & Green S Series diaphragm seals feature a diaphragm, which is permanently welded onto the seal element’s upper flange. This design eliminates the need for a diaphragm retaining ring and minimizes the risk of fluid leakage during normal operation or seal element maintenance.

Type S Series seal elements feature an upper housing that is contoured. This design permit free movement of the diaphragm with accurate response to pressure changes. It also protects the seal element from distortion due to improper handling during maintenance routines. Type S Series diaphragm seals have a volumetric displacement of .07 cubic inches. Filling screws are standard on all models except the high pressure Type SX Series.


  • Diaphragm directly welded to upper flange

    • Eliminates retaining ring

    • Minimizes risk of leaks

  • Continuous duty

  • Ideal for general-purpose application

  • Materials available for corrosive applications

  • Seal ratings to 10,000 psig (690 bar)

  • Compatible with most 4.5” and smaller gauges



All remanufactured products:

  • 2-3 Weeks Standard Delivery
  • 2-5 Days Expedited Delivery
  • Need it sooner? call us today at 1-800-325-4808


– U.S. Gauge products:

  • 4-8 weeks

Rotork® electric actuators

  • Please contact us for delivery


All remanufactured products are covered by our 2 year service warranty. Please click here to view full warranty.

Ametek® – U.S. Gauge Products are covered by the original manufacturer’s warranty. Please click here for warranty information.

Rotork® Electric Actuators – please contact us for warranty information.

New Foxboro® products are covered by a 1 year service warranty by the original manufacturer.