Hi-Performance Stainless Steel Edge Welded Bellows

Tel : +44 (0)1634 684571

Fax :+44 (0)1634 200836

Size Range / Diaphragm Types

Nested Bellows  Diaphragm Detail

What sizes/types are available?

We manufacture diaphragm bellows from 0.5" diameter to 27.25" diameter, in stainless steel, and high nickel alloys. Material thickness varies from 0.003" to 0.036" for our product line, although for roll-form bellows the thickness can exceed 0.062". On a large welded diaphragm bellows, the total length of weld can exceed 500ft and all of these welds will be one shot welds in typically 0.008" material with zero leakage. Such welds are tested using a mass spectrometer tuned to detect a low mass gas such as Helium. This is used as a search gas and will find a leak path through a pore in a metal component that would not be detected if tested using air pressure techniques.


Very good resistance to pressure in the compressed state with low spring rate characteristics. Is ideally suited for long stroke applications whilst maintaining a short free length. This construction will accomodate large angular movements and can be used for 90° and 180° bends.


Good resistance to pressure with low spring rates. Linearity of stroke and force output is excellent for short movements.Very good torsional stiffness. Constant effective area with pressure.


The omega design is a patented construction and is excellent for high external pressure applications. Spring rates are high and sizes are limited. This unit is ideal for gland seal applications.

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