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RM70N/74N O-Ring Mounted Seals

The RM7N mechanical seal range is designed for universal application and ideal suited for standardization. The inserted seal faces are easily exchangeable, permitting all combinations of materials and stock rationalization.

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Features & Benefits

  • Single Seal, Unbalanced & Bi-Directional
  • To DIN 24960
  • Non-welded continuous wave spring available per request
  • Shrink - fitted rotary face available as rs670S/674S
  • No torsional stress on the bellows
  • Retainer with pumping screw available as rs671

Operating Limit

  • d = 14 - 100 mm (105-200mm available per request)
  • p = 1.5 Mpa 1
  • t = -35 - 160°C
  • V = 20 m/s g

Standard Materials Of Construction

    Rotary Faces

  • Silicon Carbide, Alumina Ceramic, Carbon Graphite, Cr-Mo Steel

    • Stationary Seats

  • Silicon Carbide, Carbon Graphite

    • Springs, Collars

  • AISI 304, 316

    • Springs, Collars

  • EPDM, FEP, FPM, FEPM

Stationary Seats

  • GS9 (standard), GS92 (Carbon Only), GS9S (Carbide face shrink-fitted)
  • GS4, GS6 & Gs13
rs670/370S/374/374S GS9/GS92/GS9S
d D L D1 L1
14 25 25.0 25 10.0
16 27 25.0 27 10.0
18 33 26.0 33 11.5
20 35 26.0 35 11.5
22 37 26.0 37 11.5
24 39 28.5 39 11.5
25 40 28.5 40 11.5
28 43 31.0 43 11.5
30 45 31.0 45 11.5
32 47 31.0 48 11.5
33 48 31.0 48 11.5
35 50 31.0 50 11.5
38 55 31.0 56 14.0
40 57 31.0 58 14.0
43 60 31.0 61 14.0
45 62 31.0 63 14.0
48 65 31.0 66 14.0
50 67 32.5 70 15.0
53 70 32.5 73 15.0
55 72 32.5 75 15.0
58 79 37.5 78 15.0
60 81 37.5 80 15.0
63 84 37.5 83 15.0
65 86 37.5 85 15.0
68 89 34.5 90 18.0
70 91 42.0 92 18.0
75 99 42.0 97 18.0
80 104 41.8 105 18.2
85 109 41.8 110 18.2
90 114 46.8 115 18.2
95 119 47.8 120 17.2
100 124 47.8 125 17.2
Pump Selector
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