Rubber Bellow seals – KE Motion Hydro https://kemotionhydro.com/en A modern company specializing in sealing technology – Mechanical seals, Rotary unions. Mon, 24 Nov 2025 10:37:23 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://kemotionhydro.com/en/wp-content/uploads/2025/03/favicon.png Rubber Bellow seals – KE Motion Hydro https://kemotionhydro.com/en 32 32 NM-1 / NM-12 / NM-13 https://kemotionhydro.com/en/products/nm-1-nm-12-nm-13/ Sun, 06 Apr 2025 13:20:05 +0000 https://kemotionhydro.com/en/proizvodi/nm-1-nm-12-nm-13/ The NM series is a high-performance Rubber Bellow Mechanical Seal, engineered for durability and flexibility in industrial applications. Designed with a non-clogging bellow, it automatically adjusts to shaft misalignments, ensuring reliable operation in water pumps and circulation systems.

The series includes models NM-1, NM-12, and NM-13, covering various mounting lengths to suit specific installation requirements for water supply and wastewater treatment.

Seal faces materials:

  • Resin impregnated carbon (В)
  • Antimony impregnated carbon (A)
  • Spec. CrMo steel (Е)
  • Tungsten carbide (U3)
  • Silicone carbide(Q1, Q2)
  • Ceramic Al2O3 (V)

Elastomers:

  • Fluorcarbon rubber, FKM (V)
  • Nitrile-butadiene-rubber (P)
  • Ethylene propylene rubber, EPDM (E)

Operation conditions:

  • p = 16 bar
  • t = -20 … 140°C
  • v = 10 m/s

Type: Rubber below seal
Replacement: Burgmann MG1/MG12/MG13, AES B01/B012/B013

]]> NM-2100 https://kemotionhydro.com/en/products/nm-2100/ https://kemotionhydro.com/en/products/nm-2100/#respond Sun, 06 Apr 2025 13:20:05 +0000 https://kemotionhydro.com/en/proizvodi/nm-2100/ The NM-2100 is a compact and robust Rubber Bellow Mechanical Seal, specifically engineered for applications with limited installation space. Its modular design features a single coil spring and an elastomeric bellow that adheres to the shaft, providing maximum durability and operational reliability.

This seal is designed to handle high pressure and temperature fluctuations, making it an excellent choice for centrifugal pumps handling water, oil, and weak chemicals.

Seal faces materials:

  • Resin impregnated carbon (В)
  • Antimony impregnated carbon (A)
  • Spec. CrMo steel (Е)
  • Tungsten carbide (U3)
  • Silicone carbide(Q1, Q2)
  • Ceramic Al2O3 (V)

Elastomers:

  • Fluorcarbon rubber, FKM (V)
  • Nitrile-butadiene-rubber (P)
  • Ethylene propylene rubber, EPDM (E)

Operation conditions:

  • p = 16 bar
  • t = -20 … 140°C
  • v = 10 m/s

Stationary seat types:

NM 2100

Installation length:

    • NM-2100S short (размер L1)
  • NM-2100K standard (размер L2)
  • NM-2100 long (размер L3)

Type: Rubber below seal
Replacement: John Crane T2100

]]> https://kemotionhydro.com/en/products/nm-2100/feed/ 0 NM-3 https://kemotionhydro.com/en/products/nm-3/ Sun, 06 Apr 2025 13:20:05 +0000 https://kemotionhydro.com/en/proizvodi/nm-3/

The NM-3 is a robust and versatile Rubber Bellow Mechanical Seal, widely recognized for its durability in general industrial applications. Its innovative design features a non-clogging elastomeric bellow that automatically compensates for shaft end-play and run-out, ensuring consistent sealing pressure.

Designed with a single coil spring, the NM-3 is driven directly by the shaft, making it exceptionally reliable for high-torque applications. It is the preferred choice for centrifugal pumps, mixers, and agitators handling water, sewage, oils, and weak chemicals.

Seal faces materials:

  • Resin impregnated carbon (В)
  • Antimony impregnated carbon (A)
  • Spec. CrMo steel (Е)
  • Tungsten carbide (U3)
  • Silicone carbide(Q1, Q2)
  • Ceramic Al2O3 (V)

Elastomers:

  • Fluorcarbon rubber, FKM (V)
  • Nitrile-butadiene-rubber (P)
  • Ethylene propylene rubber, EPDM (E)

Operation conditions:

  • p = 16 bar
  • t = -20 … 140°C
  • v = 10 m/s

Type: Rubber bellow seal
Replacement: Burgmann MG9.., AES P0.., John Crane Type 1/Type 2

]]> NM-4 https://kemotionhydro.com/en/products/nm-4/ Sun, 06 Apr 2025 13:20:05 +0000 https://kemotionhydro.com/en/proizvodi/nm-4/

The NM-4 is a compact and efficient Rubber Bellow Mechanical Seal, widely used in high-volume water pump applications. Its simplified design allows for easy installation and reliable performance in confined spaces.

The seal features a friction-locked bellows connection that protects the shaft and compensates for axial movement. It is an ideal cost-effective solution for domestic water supply pumps, swimming pool pumps, and simple centrifugal pumps.

Seal faces materials:

  • Resin impregnated carbon (В)
  • Silicone carbide(Q1, Q2)
  • Ceramic Al2O3 (V)

Elastomers:

  • Fluorcarbon rubber, FKM (V)
  • Nitrile-butadiene-rubber (P)
  • Ethylene propylene rubber, EPDM (E)

Operation conditions:

  • p = 10 bar
  • t = -20 … 140°C
  • v = 10 m/s

Type: Rubber bellow seal
Replacement: Burgmann BT-AR , AES B01

]]> NM-5 https://kemotionhydro.com/en/products/nm-5/ Sun, 06 Apr 2025 13:20:05 +0000 https://kemotionhydro.com/en/proizvodi/nm-5/

The NM-5 is a highly reliable Rubber Bellow Mechanical Seal, engineered for general to heavy-duty industrial applications. Its full-convolution elastomeric bellow design provides superior flexibility, allowing it to compensate for significant shaft end-play and run-out without compromising the seal.

Known for its robustness, the NM-5 utilizes a single coil spring and a drive band mechanism, making it an excellent solution for process pumps, mixers, and equipment handling water, oils, and industrial slurries.

Seal faces materials:

  • Resin impregnated carbon (В)
  • Silicone carbide (Q1, Q2)
  • Ceramic Al2O3 (V)

Elastomers:

  • Fluorcarbon rubber, FKM (V)
  • Nitrile-butadiene-rubber (P)
  • Ethylene propylene rubber, EPDM (E)

Operation conditions:

  • p = 10 bar
  • t = -20 … 140°C
  • v = 10 m/s

Type: Rubber bellow seal
Replacement: AES B07, John Crane 502

]]> NM LT https://kemotionhydro.com/en/products/nm-lt/ Sun, 06 Apr 2025 13:20:05 +0000 https://kemotionhydro.com/en/proizvodi/nm-lt/

The NM-LT is a specialized Rubber Bellow Mechanical Seal, engineered specifically for compatibility with Grundfos centrifugal pumps. Unlike standard seals, this model fits the unique shaft and housing requirements of Grundfos vertical and multistage pump series.

This robust sealing solution offers a perfect operational fit, ensuring leak-free performance and easy installation during maintenance. It covers the specific shaft diameters essential for these pumps (12mm to 33mm). 

Technical Specifications:

  • Type: Rubber bellow seal

  • Shaft diameters: 12 mm, 16 mm, 22 mm, 33 mm

Compatibility:

For pumps: Grundfos
Replacement: BUBE 12, 16, 22, 33 mm

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