Diaphragm Seals | Diaphragm Pressure Seals

Diaphragm seals create a flexible barrier to protect pressure measurement instruments from extreme operating temperatures and corrosive, abrasive, and toxic process media. These seals are made from metal or plastic and are available with either a threaded, flanged, or in-line connection.

Uses for diaphragm seals include pressure transducers and transmitters, and pressure switches and gauges. Applications and industries vary widely but typically include wastewater treatment facilities, offshore oil applications, pharmaceutical, food and beverage, and biotech.

Types of diaphragm pressure seals include:

  • Threaded diaphragm seals connect directly to the process instrumentation with an NPT connection.
  • Flanged connection diaphragm seals attach to the process instrumentation with either a raised, flat, or ring joint flange.  
  • In-line seals  are designed for use in full port flow-thru applications that would clog standard diaphragm seals.   

Diaphragm Seals for Pressure Instrumentation

Branom Instrument Co. provides diaphragm seals from several manufacturers, including WIKANOSHOK, Red Valve, and Winters. Our inventory includes replaceable and non-replaceable diaphragm seals in the following seal types:

  • Threaded Connection Diaphragm Seals
  • Flange Connection Diaphragm Seals
  • Sanitary Diaphragm Seals 
  • In-Line Diaphragm Seals

If you are unsure of which diaphragm seal is best for your application, our team will help you select and source the best option.

Contact us to Discuss Diaphragm Seals

Branom has decades of instrumentation experience and delivers high-quality products produced by the industry’s leading manufacturers. We carry an extensive inventory of diaphragm seals and other instrumentation and will help you source the right products for your testing needs. Contact us to discuss your application requirements.

Noshok Inc
TYPE 29 HIGH VOLUMETRIC DISPLACEMENT NON-REPLACEABLE DIAPHRAGM SEAL WITH 1/4" FLUSHING PORT

29-04S-S-04S-2F

356.00 356.00 356.0 USD
On Hand: 0
Harrington Industrial Plastics Llc
PLAST-O-MATIC CPVC DIAPHRAGM SEAL, 1/2" PROCESS, 1/4" INSTRUMENT, TEFLON DIAPHRAGM

GGTS1-CP

248.00 248.00 248.0 USD
On Hand: 2
Marsh Bellofram Corporation
Model 12000 Mini Servicable Rubber Diaphragm Seal, 1/4" PVC Upper, 1/2" PVC Lower, with Nitrile Diaphragm, No Fill

12000-52-54-3-00

173.98 173.98 173.98 USD
On Hand: 1
Wika Instrument Lp
L990.10-N4FxN4F.SS.SS-2.CS.SS.VI.1500

50372211

538.69 538.69 538.69 USD
On Hand: 3
Wika Instrument Lp
990.TA MINISEAL, 1/4" x 1/2", 316SS W/ FLUSHING

4295952

143.28 143.28 143.28 USD
On Hand: 1
Wika Instrument Lp
L990.40.N2FXN2F.SS.SS-0.SS.SS.VI.1500.3.5 DIAPHRAGM SEAL

4295561

997.81 997.81 997.8100000000001 USD
On Hand: 2
Marsh Bellofram Corporation
B-8498-1 DIAPHRAGM SEAL 1/4"NPT NITRILE DIAPHRAGM

950-001-000

25.62 25.62 25.62 USD
On Hand: 0
Wika Instrument Lp
ARMORED CAPILLARY 9'LONG 1/2"NPT W/FILL PORT

52031055

0.01 0.01 0.01 USD
On Hand: 1
Wika Instrument Lp
L990.10.N4FXN8F.CS.SS-2.CS.SS.VI.3625

9768195

148.38 148.38 148.38 USD
On Hand: 1
Wika Instrument Lp
L990.TB.N2FXN4F.SS.CA-0.CA.2500

50558561

217.39 217.39 217.39000000000001 USD
On Hand: 1
Wika Instrument Lp
L990.10 1/4"CS UPPER 1/2"SS LOWER SS DIAPH/VITON-CHECK PRICE

50329839

92.91 92.91 92.91 USD
On Hand: 1
Wika Instrument Lp
CHEMSL 990.1X DN50 1/2NPT-F CS SS

1492187

58.32 58.32 58.32 USD
On Hand: 0
Wika Instrument Lp
4232330-0004

4232330-0004

87.00 87.00 87.0 USD
On Hand: 1
Harrington Industrial Plastics Llc
1-1/2" UNION S CPVC VIT SCH80

897C-015L

47.00 47.00 47.0 USD
On Hand: 4