Threaded Seals

100-101 Threaded Diaphragm Seals
100-101 Threaded Diaphragm Seals

100-101 Threaded Diaphragm Seals

The Ashcroft® 100 and 101 threaded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic wetted materialsVariety of metallic and non-metallic materials34 bar, 172 bar and 345 bar
200-201 Threaded Diaphragm Seals
200-201 Threaded Diaphragm Seals

200-201 Threaded Diaphragm Seals

The Ashcroft® 200 and 201 threaded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic and non-metallic wetted materialsVariety of metallic and non-metallic materials34 bar, 172 bar and 345 bar
300-301 Threaded Diaphragm Seals
300-301 Threaded Diaphragm Seals

300-301 Threaded Diaphragm Seals

The Ashcroft® 300 threaded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Viton, Teflon and KalrezVariety of metallic and non-metallic materials14 bar up to 172 bar
310-315 Mini-Diaphragm Seals
310-315 Mini-Diaphragm Seals

310-315 Mini-Diaphragm Seals

The Ashcroft® 310 and 315 mini-diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel, Monel 400, Tantalum, Hastelloy C 276316L Stainless Steel, Monel 400, Hastelloy C 276172 bar
311-312 Midi-Diaphragm Seals
311-312 Midi-Diaphragm Seals

311-312 Midi-Diaphragm Seals

The Ashcroft® 311 and 312 midi-diaphragm seals or isolation devices are used in confined areas to protect measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel, Hastelloy C 276, Tantalum316L Stainless Steel, Hastelloy C-27670 bar
330 All-Welded Flush Mini Diaphragm Seals
330 All-Welded Flush Mini Diaphragm Seals

330 All-Welded Flush Mini Diaphragm Seals

The Ashcroft® 330 all-welded flush mini-diaphragm seal or isolation device protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel316L Stainless Steel200 bar
400-401 All-Welded Diaphragm Seals
400-401 All-Welded Diaphragm Seals

400-401 All-Welded Diaphragm Seals

The Ashcroft® 400 and 401 all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic wetted materialsVariety of metallic materials320 bar, optional Type 400: 600 bar, Type 401: 345 bar
500-501 All-Welded Diaphragm Seals
500-501 All-Welded Diaphragm Seals

500-501 All-Welded Diaphragm Seals

The Ashcroft® 500 and 501 all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic wetted materialsVariety of metallic materials34 bar
510-511 All-Welded Diaphragm Seals
510-511 All-Welded Diaphragm Seals

510-511 All-Welded Diaphragm Seals

The Ashcroft® 510 and 511 compact, all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel, Duplex, Hastelloy C 276, Monel 400, Inconel 625316L Stainless Steel, Duplex, Hastelloy C 276, Monel 400, Inconel 625100 bar, 345 bar
740-741 High-Displacement Diaphragm Seals
740-741 High-Displacement Diaphragm Seals

740-741 High-Displacement Diaphragm Seals

The Ashcroft® 740 and 741 high-displacement diaphragm seals or isolation devices are used with low-ranged instruments or high static pressure dp gauges with low differential pressure.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic wetted materialsVariety of metallic wetted materials50 bar