(more info)
NES 5 Mechanical Elastomer Bellow Seal - equivalent to John Crane type 502

Equivalent to John Crane* 502


Operating Conditions:

Pressure: Up to 20 kg/cm2
Temperature: -20 C ~ 180 C
Speed: Up to 15 m/s



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

Cross Specification Chart

Cross Specification Chart for NES 5 mechanical seal equivalent to John Crane type 502

Addtional Notes:

Suitable for a wide range of service conditions: hot water and mild chemical duties. 

Compact working height that enables it to fit very short stuffing boxes.

Standard Seat Compatibility:

NES G mechanical seal seat is  equivalent to John Crane BO

NES G is equivalent to John Crane* BO

specification chart in Metric

Alternative Seat Compatibility:

NES F mechanical seal seat

NES F is equivalent to John Crane* BP

specification chart in Metric


NES A-1 mechanical seal seat

NES A-1 is equivalent to John Crane* BD

specification chart in Metric


  * The John Crane and Flexibox trademarks are trademarks of their respective owners, and that neither entity is affiliated with NE Seal Ind. Prod. LTD, its products, or its website, and does not manufacture, sponsor, or endorse its products.