Elastomer Bellow - NES type 19-1

NES type 19-1

NES 1 Mechanical Elastomer Bellow Seal - equivalent to Burgmann MG1
= Burgmann MG1

Operating Conditions:

Pressure: Up to 12 kg/cm2
Temperature: -20 C ~ 180 C
Speed: Up to 10 m/s

Materials:

Face: Carbon, SiC
Seat: Ceramic, SiC, TC
Elastomer: NBR, EPDM, Viton
Metal: 304SS, 316SS

Cross Specification Chart

Cross Specification Chart for NES 19-1 mechanical seal equivalent to Burgmann MG1
 

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NESEAL Request for Price Quote for Mechanical Seals

 

Additional Notes:

Impact Elastomer bellows seal.

Standard Seat Compatibility:

NES I mechanical seal seat is equivalent to Burgmann G4

NES I is Burgmann G4

specification chart in Inches

Alternative Seat Compatibility:

NES a mechanical seal seat is equivalent to Burgmann G9

NES A is equivalent to Burgmann G9

specification chart in Metric

NES B mechanical seal seat is equivalent to DURO RO

NES B is equivalent to DURO RO

specification chart in Metric

NES B mechanical seal seat is equivalent to Burgmann G60

NES D is equivalent to Burgmann G60

specification chart in Metric

NES J mechanical seal seat is equivalent to Burgmann G50

NES J is equivalent to Burgmann G50

specification chart in Metric

NES M mechanical seal seat is equivalent to DIN LONG

NES M is equivalent to DIN LONG

specification chart in Metric

NES N mechanical seal seat is equivalent to DIN SHORT

NES N is equivalent to DIN SHORT

specification chart in Metric
 
"Non-Pusher" Elastomer Bellows Seal

An elastomer bellows seals is a non-pusher seal design in which a single spring coil fits over the shaft and bellows. The elastomer bellows requires a concentric spring; the metal bellows does not because the bellows itself provides the pressure necessary to hold the seal faces in contact.

Fits equipment with confined space requirements and limited seal chamber depths.

An elastomer bellows seal combines the best features of a bellows seal and a pusher seal, such as the absence of a dynamic gasket which eliminates the possibility of 'hang-up.'

The elastomer bellows is tolerant to abrasive particals or contamination. This is due to the features of the open shape and the 'self-cleaning action,' disposing of particles through centrifugal force.

One major benefit is the simplicity of the design and subseqent lower cost.

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