HARDWARE / PRODUCTUpdated 24 Jul 2026

MULTI-LAYER BELLOWS

Saransk Instrument-Making Plant
MULTI-LAYER BELLOWS

Multi-layer bellows designed for use as sensing elements, phase separators, sealing devices, and power unit components in various atmospheres, particularly suitable for liquid rocket engine combustion systems.

Typed specifications2 values

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Design lifetime
6 years
product page
Lead time
2 months
product page

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As published by the supplier11 lines, in the manufacturer's own wording
Purpose
Intended for operation as sensing elements, phase separators, sealing devices as well as power unit components in atmospheres causing no material corrosion, at temperature of minus 260 to plus 550 °C. It is applicable to compensate for the axial, angular and transverse movements of the branches of the power plant circuits that occur in the combustion system of a liquid rocket engine.
Year of release
2007
Design life
6 years
Lead time
2 months
Flight qualification of the product
No
Possibility to adapt the product to customer requirements
Yes
Outside diameter
22-125 mm
Number of corrugations
4-25
Wall thickness
0.16-0.3 mm
Number of layers
2-10
Material grade according to gost r 55019-2012
08Kh18N10T, 12Kh18N10T, 10Kh17N13M2T, 10Kh17N13M3T

About

These multi-layer bellows are engineered for operation as sensing elements, phase separators, sealing devices, and components within power units. They are designed to function effectively in atmospheres that do not cause material corrosion, across a wide temperature range from minus 260 to plus 550 °С. A key application is to compensate for axial, angular, and transverse movements within the branches of power plant circuits, specifically those occurring in the combustion system of a liquid rocket engine. Manufactured from corrosion-resistant and fire-resistant steel grades such as 08Х18Н10Т or 12Х18Н10Т, these bellows ensure complete leak-tightness even at high pressures and temperatures. This is combined with excellent flexibility, a critical feature for hazardous industries. The product was first released in 2007 and comes with a guaranteed service life of 6 years. The estimated production and delivery time is 2 months. While there is no flight qualification stated, the product can be adapted to meet specific customer requirements.

Documentation

No public datasheet yet — request the datasheet / ICD from the supplier.

Source: trade.glavkosmos.com ↗

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