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R-109/R-8U

Mechanical seal R-109/8U

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, VULCAN 1609B / 1609BS.

Temperature: -40°~200°

Pressure: ≤2.4 MPa

Speed: ≤25 m/sec

Materials

  • Rotary ring: Carbon/SIC
  • Stationary ring: SIC/TC
  • Bellows: EPDM/VITON/PTFE
  • Spring: SS304 / SS316.
  • Metal parts: SS304 / SS316.
  d1 (H6) d3 (Max) d7 (h8) L3 (±0.5) L4 D10 (h8) L20
0.750 19.05 34.0 34.93 22.2 10.3 48.0 17.6
0.875 22.23 37.2 38.10 23.8 10.3 51.0 17.6
1.000 25.40 40.3 41.28 25.4 11.1 54.0 17.6
1.125 28.58 43.5 44.45 27.0 11.1 62.0 27.0
1.250 31.75 48.3 47.63 27.0 11.1 68.0 27.0
1.375 34.93 51.5 50.80 28.6 11.1 71.0 27.0
1.500 38.10 54.6 53.98 28.6 11.1 78.0 27.0
1.625 41.28 61.0 60.33 35.0 12.7 81.0 27.0
1.750 44.45 64.2 63.50 35.0 12.7 84.0 27.0
1.875 47.63 67.3 66.68 35.0 12.7 87.0 27.0
2.000 50.80 70.5 69.85 35.0 12.7 97.0 33.3
2.125 53.98 76.9 76.20 43.0 14.3 100.0 33.3
2.250 57.15 80.0 79.38 43.0 14.3 103.0 33.3
2.375 60.33 83.2 82.55 43.0 14.3 106.0 33.3
2.500 63.50 86.4 85.73 43.0 14.3 110.0 33.3
2.625 66.68 89.6 85.73 43.0 15.9 113.0 33.3
2.750 69.85 92.7 88.90 43.0 15.9 116.0 33.3
2.875 73.03 98.9 95.25 43.0 15.9 117.0 33.3
3.000 76.02 97.5 98.43 43.0 15.9 121.0 33.3
3.125 79.38 100.7 101.60 43.0 19.8 - 33.3
3.250 82.55 105.4 104.78 43.0 19.8 132.0 33.3
3.375 85.73 108.6 107.95 43.0 19.8 - 33.3
3.500 88.90 111.8 111.13 43.0 19.8 138.0 33.3
3.625 92.08 115.0 114.30 43.0 19.8 - 33.3
3.750 95.25 118.1 117.48 43.0 19.8 144.0 33.3
3.875 98.43 121.3 120.65 43.0 19.8 - 33.3
4.000 101.60 124.5 123.83 43.0 19.8 151.0 33.3
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