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Rotary Shaft Seals

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Longer Service Lives for Reliable Long-term Use

Sealing lips made from PTFE offer outstanding properties for reliable sealing of rotary shafts. They combine excellent thermal and mechanical properties with exceptional insensitivity to aggressive media.

Properties

  • Excellent chemical resistance
  • Suitable for applications with high thermal loads
    from –60°C to +200°C
  • Suitable in case of insufficient lubrication and dry runs
  • Also suitable for unhardened shafts
  • Highly wear-resistant sealing lip compound
  • Friction-optimized designs for minimum power loss
  • Suitable for high circumferential speeds
  • Low breakaway forces after prolonged downtimes (no stick-slip)
  • Antiadhesive behavior of the sealing lip
  • Special types available for the food processing and pharmaceutical industries

Suitable for the Following Application Areas

  • Mineral and synthetic lubricants
  • Pharmaceutical products and foodstuffs (FDA recommendations for certain PTFE compounds)
  • Chemical waste water and wash water
  • Corrosive, fluid, and gaseous media
  • Powders and granulates
  • Coolant and lubricant fluids
  • Water and steam
  • Resins, glues, and pastes
  • Air/oxygen (BAM tests for certain PTFE compounds)
  • Heat transfer oils
Product Rotary shaft seals

Standard Types Rotary Shaft Seals

Rotary Shaft Seal Standard type HN 2390

HN 2390

Thanks to its high wear and pressure resistance, this standard design is suitable for a wide range of applications, such as pumps, blowers, and compressors.

Properties

  • Good sealing performance with pressurized media
  • Suitable for dry runs and lubricated applications
  • Also suitable for soft shafts

Operating limits

Max. circumferential speed: 20 m/s
Temperature range: –60°C to +200°C
Max. pressure: 10 bar
Vacuum: to 10–3 mbar
Center offset: ≤ 0.1 mm
Concentricity tolerance: ≤ 0.05 mm

Stock list

Designation example: rotary shaft seal with PTFE sealing lip for shaft diameter d1 = 75, locating hole d2 = 100 and width w = 10:
RWDR HN 2390 75 x 100 x 10

d1 mmd2 mmw mmPart no.
10227682.314
12247681.431
15307677.558
17357657.433
18307674.494
20307787.280
20357679.410
22357654.671
25357680.311
25427779.954
25477659.606
28407677.329
28477836.257
30427786.632
30477779.962
32478677.957
35477779.970
35508779.032
35628384.771
40528682.691
40558387.266
40608677.345
40628779.261
40658109.380
42608781.991
42628785.385
45628678.899
48658261.920
50728779.989
55728678.007
60758678.430
60808677.337
62808778.826
65858779.997
709010678.341
7010010783.390
7510010658.502
8010010680.583
8511010677.612
9011010679.771
9012012682.616
10012012778.834
10013012778.176
10513012677.779
11013012783.811
11014012653.837
12015012676.071
Rotary Shaft Seal Standard type HN 2390 friction-optimized

HN 2390 Friction-optimized (FO)

Compared with the standard version of type HN 2390, the friction-optimized special type has a significantly lower friction coefficient.

Properties

  • Also suitable for soft shafts
  • Lower generation of frictional heat
  • Suitable for high circumferential speeds
  • Small clearances
  • Long service life

Operating limits

Max. circumferential speed: 30 m/s
Temperature range: –60°C to +200°C
Max. pressure: 3 bar
Center offset: ≤ 0.1 mm
Concentricity tolerance: ≤ 0.05 mm

Stock list

Designation example: rotary shaft seal with PTFE sealing lip for shaft diameter d1 = 70, locating hole d2 = 78 and width w = 6:
RWDR HN 2390 special type friction-optimized (FO) 70 x 78 x 6

d1 mmd2 mmw mmPart no.
8185779.210
10227781.703
12227681.741
20285786.357
20305786.322
22305781.681
22357786.888
25325682.713
30375682.721
30405781.711
30457681.776
35455781.738
37475780.375
40475682.438
40505780.383
45555780.367
50605675.280
50626780.146
55636682.748
55808782.858
60808205.840
65756841.110
65858677.574
70786682.756
8010010922.692
10012010786.152
Rotary Shaft Seal Standard type HN 2580

HN 2580

Standard version for pressureless applications and/or pressures slightly above atmospheric. This version features a highly flexible sealing lip and an additional protective lip. Suitable applications include transmissions/gearboxes, machine tools, and pumps.

Properties

  • Also suitable for soft shafts
  • Highly flexible sealing lip
  • Good friction behavior
  • Predefined width of contact surface
  • Suitable for dry runs and lubricated applications

Operating limits

Max. circumferential speed: 30 m/s
Temperature range: –60°C to +200°C
Max. pressure: 0.5 bar
Center offset: ≤ 0.2 mm
Concentricity tolerance: ≤ 0.1 mm

Stock list

Designation example: rotary shaft seal with PTFE sealing lip for shaft diameter d1 = 80, locating hole d2 = 100 and width w = 10:
RWDR HN 2580 80 x 100 x 10

d1 mmd2 mmw mmPart no.
10227205.800
12247205.380
15307205.810
18307205.430
20357205.440
25427205.450
30477205.460
35478205.470
35508205.480
40558205.510
40628205.570
45628205.590
48658086.070
50728205.610
55728205.620
60808205.630
65858205.660
709010205.680
8010010205.700
8511010205.750
9011010205.770
10013012205.780
11014012205.790

Special Types Rotary Shaft Seals

Rotary Shaft Seal Special type dual lip, counter-rotating

Dual lip, counter-rotating, for separating two media, e.g., for centrifuges and decanters.

Rotary Shaft Seal Special type dual lip, rotating in same direction

Dual lip, rotating in same direction, with or without hydrodynamic return feed spiral groove.

Good sealing performance, higher operational reliability, e.g., for pumps as well as screw-type and rotary compressors.

Rotary Shaft Seal Special type sealing lip negative

Sealing lip negative. Small clearances, for food processing and medical engineering, e.g., for mixers, meat processing machines, and cutters.

Rotary Shaft Seal Special type shaft sealing ring without housing

Shaft sealing ring without housing. Compact sizes as well as special dimensions/shapes available.

Rotary Shaft Seal Special type with protective lip

With protective lip for use in dirty conditions, e.g., construction sites and underfloor assemblies of screw-type and rotary compressors.