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Mechanical seal R-109B/R-8B

Mechanical seal R-109B/8B

Multi-spring mechanical seal R-109B/8B - does not depend on the direction of rotation of the shaft, it is easy to install and adjust with the help of mounting screws. A set of small springs ensures uniform load in the friction pair. Mechanical seals R-109B/8B are often used as an element of a double or tandem seal.

The R-109B type, thanks to the use of PTFE-based sealing wedges, is used in particularly difficult working conditions. Complies with API610 standards.

Application: Howden Compressors Limited, PEA, Grundfos TP, Afton, KSB, XM, etc. centrifugal pumps, mixers, agitators for the chemical, petrochemical, and food industries.

Type: John Crane 109B, 9B/8B1, Sterling 290BS, Aesseal M02/M02U/M02S/M02SU, Roten 90, Sealol T, Vulkan 1609B/1609BS.

Temperature: -20°~200°

Pressure: ≤5.8 МПа

Speed: ≤25 м/сек

Materials:

  • Rotary ring: Carbon/SIC;
  • Stationary ring: SIC/TC;
  • Bellows: EPDM/VITON/PTFE;
  • Spring: SS304/SS316;
  • Metal parts: SS304/SS316.
  d1 (H6) d2 (Max) d3 (h8) d7 L3 (±0.5) L65 (h8) L4
1.000 22.2 25.40 40.3 41.28 33 6.4 11.1
1.125 25.4 28.58 43,15 44,45 35 7.9 11.1
1.250 28.6 31.75 48.3 47.63 35 7.9 11.1
1.375 28.6 34.93 51.5 50.80 37 8.7 11.1
1.500 31.8 38.10 54.6 53.98 37 8.7 11.1
1.625 34.9 41.28 61.0 60.33 45 8.7 12.7
1.750 38.1 44.45 64.0 63.50 45 9.5 12.7
1.875 41.3 47.63 67.3 66.68 45 9.5 12.7
2.000 44.5 50.80 70.5 69.85 45 9.5 12.7
2.125 47.6 53.98 76.9 76.20 52 11.1 14.3
2.250 50.8 57.15 80.0 79.38 52 11.1 14.3
2.375 54.0 60.33 83.2 82.55 52 11.1 14.3
2.500 57.2 63.50 86.4 85.73 52 11.1 14.3
2.625 60.3 66.68 89.6 85.73 52 11.1 15.9
2.750 63.5 69.85 92.7 88.90 52 11.1 15.9
2.875 66.7 73.03 95.9 95.25 52 11.1 15.9
3.000 69.9 76,02 97.5 98.43 52 11.1 15.9
3.125 73.0 79.38 100.7 101.60 52 11.1 19.8
3.250 76.2 82.55 105.4 104.78 52 14.3 19.8
3.375 79.4 85.73 108.6 107.95 52 14.3 19.8
3.500 82.6 88.90 111.8 111.13 52 14.3 19.8
3.625 85.7 92.08 115.0 114.30 52 14.3 19.8
3.750 88.9 95.25 118.1 117.48 52 14.3 19.8
3.875 92.1 98.43 121.3 120.65 52 14.3 19.8
4.000 95.3 101.60 124.5 123.83 52 14.3 19.8
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