Diaphragm Seals - Flanged Seals


102-103 Flanged Diaphragm Seals
The Ashcroft® type 102 and 103 flanged diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic wetted materials |
Variety of metallic and non-metallic materials |
150, 300, 600, 900 or 1500 |
DF Flush Flanged Diaphragm Seal
The Ashcroft® DF flush flanged diaphragm seal uses a flush diaphragm welded directly to the assembly flange, eliminating the need for a bulky lower housing.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic wetted materials |
Flush design eliminates need for a bottom housing |
150 to 2500 - class flanges |


106 In-Line Flanged Diaphragm Seals
The Ashcroft® 106 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic and non-metallic wetted materials |
Variety of metallic and non-metallic materials |
Flange Class: 150 |
202-203 Flanged Diaphragm Seals
The Ashcroft® 202 and 203 diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic wetted materials |
Variety of metallic and non-metallic materials |
150, 300, 600, 900 or 1500 |


206 In-Line Flanged Diaphragm Seals
The Ashcroft® 206 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic and non-metallic wetted materials |
Variety of metallic and non-metallic materials |
Flange Class: 150 |
302-303 Flanged Diaphragm Seals
The Ashcroft® 302 and 303 diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Viton, Teflon, Kalrez |
Variety of non-metallic materials |
150, 300, 600, 900 or 1500 |


402-403 Flanged All-Weld Diaphragm Seals
The Ashcroft® 402 and 403 flanged all-weld diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic wetted materials |
Variety of metallic materials |
150, 300, 600, 900 or 1500 |
702-703 Flanged High Displacement Diaphragm Seals
The Ashcroft® 702 and 703 high-displacement diaphragm seals or isolation devices are used with low pressure or differential pressure gauges with low differential pressure and elevated static pressure.
Diaphragm Material |
Bottom Housing Material |
Flange Rating |
Variety of metallic and non-metallic wetted materials |
Variety of metallic and non-metallic materials |
150, 300, 600 |

