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Mechanical seal R-31K/R-31U

Mechanical seal R-31K/R-31U

Mechanical seal R-31K/R-31U is a combination of a seal of type R-21 with a hard coating of friction pairs, for more severe operating conditions. The seal is single, does not depend on the direction of rotation of the shaft, with a strong central non-clogging spring. It can be used as a component of a tandem seal.

Application: sewerage, water supply, food industry, centrifugal pumps, drainage, compressors and other rotating equipment.

Type: Flowserve Pac-seal Type 31.

Temperature: -20°~150°

Pressure: ≤1.5 MPa

Speed: ≤13 m/sec

Materials:

  • Rotary ring: Carbon/SIC;
  • Stationary ring: Ceramic/SIC/TC;
  • Bellows: NBR/EPDM/VITON;
  • Spring: SS304/SS316;
  • Metal parts: SS304/SS316.

Mechanical seal R-31K

(Inch) d1 (H6) d3 (Max) d7 (h8) L3 (±0.5) L4
0.500 12,70 23,3 27,79 25,40 8,74
0.625 15,87 30,1 30,95 25,40 10,32
0.750 19,05 33,1 34,15 25,40 10,32
0.875 22,23 36,3 37,30 25,40 10,32
1.000 25,40 39,4 40,50 25,40 10,32
1.125 28,58 44,5 47,63 33,34 11,99
1.250 31,75 47,6 50,80 33,34 11,99
1.375 34,93 50,8 53,98 33,34 11,99
1.500 38,10 54.0 57,15 33,34 11,99
1.625 41,28 60,3 60,35 33,34 11,99
1.750 44,45 60,3 63,50 40,48 11,99
1.875 47,63 63,9 66,70 40,48 11,99
2.000 50,80 66,7 69,85 40,48 11,99
2.125 53,98 74,6 73,05 41.00 13,50
2.250 57,15 74,6 76,20 41.00 13,50
2.375 60,33 82.0 79,40 41.00 13,50
2.500 63,50 86,1 82,55 41.00 13,50
2.625 66,68 86,1 92,10 49.00 15,90
2.750 69,85 88,9 95,25 49.00 15,90
2.875 73,03 96,5 98,45 49.00 15,90
3.000 76,20 96,5 101,65 49.00 15,90

Mechanical seal R-31U

(Inch) d1 (H6) d3 (Max) d7 (h8) L3 (±0.5) L4
0.500 12,70 23,3 25,40 20,62 7,9
0.625 15,87 30,1 31,75 22,22 10,3
0.750 19,05 33,1 34,93 22,22 10,3
0.875 22,23 36,3 38,10 23,80 10,3
1.000 25,40 39,4 41,28 25,40 11,1
1.125 28,58 44,5 44,45 26,97 11,1
1.250 31,75 47,6 47,63 26,97 11,1
1.375 34,93 50,8 50,80 28,58 11,1
1.500 38,10 54.0 53,98 28,58 11,1
1.625 41,28 60,3 60,33 34,93 12,7
1.750 44,45 60,3 63,50 34,93 12,7
1.875 47,63 63,9 66,68 38,10 12,7
2.000 50,80 66,7 69,85 38,10 12,7
2.125 53,98 74,6 76,20 42,85 14,3
2.250 57,15 74,6 79,38 42,85 14,3
2.375 60,33 82.0 82,55 46,02 14,3
2.500 63,50 86,1 85,73 46,02 14,3
2.625 66,68 86,1 85,73 49,20 15,9
2.750 69,85 88,9 88,90 49,20 15,9
2.875 73,03 96,5 95,25 52,37 15,9
3.000 76,20 96,5 98,43 52,37 15,9
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