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Mechanical seal R-58U/59U

Mechanical seal R-58U/59U

The single mechanical seal of the R-59U/R-58U series is multi-spring, unbalanced, does not depend on the direction of rotation of the shaft. Thanks to a set of small springs, the loads in the friction pairs are distributed evenly. Modification of the R-59U using secondary wedge seals made of PTFE allows the seal to be applied in extremely aggressive corrosive environments. It is often used as a component of a double seal. Complies with EN 12756, DIN 24960, ISO 3069 and API 610 specifications.

Application: Thune Eureka, KSB, HM, AH, HMS, VK, ONL, VKS, ONC, etc. centrifugal pumps, mixers, agitators of chemical, petrochemical, gas and pharmaceutical industries.

Type: John Crane 59U/58U, Aesseal M03/M03U/M03S/M03SU, Vulcan 1659/1659S, Burgmann BT-C56.KU/BT-C5.KU.

Temperature: -40°~200°

Pressure: ≤1.7 MPa

Speed: ≤25 m/sec

Materials:

  • Rotary ring: Carbon/SIC/TC;
  • Stationary ring: SIC/TC/SUS;
  • Bellows: EPDM/VITON/PTFE;
  • Spring: SS304/SS316;
  • Metal parts: SS304/SS316.
d1 (H6) d3 (Max) d6 d7 (h8) L3 (±0.5) L4
18 32 27 33 24.0 13.5
20 34 29 35 24.0 13.5
22 36 31 37 24.0 13.5
24 38 33 39 26.7 13.3
25 39 34 40 27.0 13.0
28 42 37 43 30.0 12.5
30 44 39 45 30.5 12.0
32 46 42 48 30.5 12.0
33 47 42 48 30.5 12.0
35 49 44 50 30.5 12.0
38 54 49 56 32.0 13.0
40 56 51 58 32.0 13.0
43 59 54 61 32.0 13.0
45 61 56 63 32.0 13.0
48 64 59 66 32.0 13.0
50 66 62 70 34.0 13.5
53 69 65 73 34.0 13.5
55 71 67 75 34.0 13.5
58 78 70 78 39.0 13.5
60 80 72 80 39.0 13.5
63 83 75 83 39.0 13.5
65 85 77 85 39.0 13.5
68 88 81 90 39.0 13.5
70 90 83 92 45.5 14.5
75 95 88 97 45.5 14.5
80 104 95 105 45.5 15.0
85 109 100 110 45.5 15.0
90 114 105 115 50.0 15.0
95 119 110 120 50.0 15.0
100 124 115 125 50.0 15.0
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