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DIN Standard Double Cartridge Seals D51 with Easy Installation Replacing Depac 321

D51 double mechanical seal
Double Cartridge Seals D51
Replacement for:
  • Depac 321

Features:
  • DIN standard
  • Easy installation
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Performance Capabilities of Double Cartridge Seals D51

  • Temperature: -40℃ to 250℃, dependent on the elastomer
  • Pressure: Up to 28 bar
  • Speed: Up to 35 m/s
  • End play/axial float allowance ±1.0mm

Sizes of Double Cartridge Seals D51

24mm to 100mm
1” to 4”

Materials Combination of Double Cartridge Seals D51

  • Face: Carbon, SiC, TC
  • Seat: SiC, TC
  • rings: NBR, EPDM, VITON, Aflas, FEP, Kalrez, Chemraz etc.
  • Spring: SS316, Hastelloy C
  • Metal parts: SS316

Specification of Double Cartridge Seals D51

Double Cartridge Seals by Size d C D D1 D2 E L1 L2 L3
D51-24 24 60 44.7 105 52 12.5 50 35 24
D51-25 25 60 44.7 105 52 12.5 50 35 24
D51-28 28 60 47.7 105 55 12.5 50 35 24
D51-30 30 60 49.7 105 57 12.5 50 35 24
D51-32 32 60 50.9 105 60 12.5 50 35 24
D51-33 33 60 50.9 105 60 12.5 50 35 24
D51-35 35 67 54.7 115 62 12.5 50 35 24
D51-38 38 75 57.7 130 65 14.7 50 35 24
D51-40 40 75 59.7 130 67 14.7 50 35 24
D51-43 43 82 62.7 140 70 14.7 50 35 24
D51-45 45 82 64.7 140 72 14.7 50 35 24
D51-48 48 82 67.7 140 75 14.7 50 35 24
D51-50 50 82 69.7 140 77 14.7 50 35 24
D51-53 53 92 72.7 150 80 17.5 50 35 24
D51-55 55 92 74.7 150 82 17.5 50 35 24
D51-60 60 100 79.7 160 87 17.5 50 35 24
D51-65 65 100 84.7 160 92 17.5 50 35 24
D51-70 70 112 89.7 180 97 17.5 50 35 24
D51-75 75 125 102.8 190 108 17.5 54 39 25
D51-80 80 130 107.8 190 113 17.5 54 39 25
D51-85 85 135 112.8 220 118 21.5 54 39 25
D51-90 90 140 117.8 220 123 21.5 54 39 25
D51-95 95 145 122.8 220 128 21.5 54 39 25
D51-100 100 150 127.8 220 133 21.5 54 39 25

Double Cartridge Seals by Size d C D D1 D2 E L1 L2 L3
D51-1" 1 2.382 1.76 4.134 1.85 0.492 2.126 1.387 0.945
D51-1.125" 1 1/8 2.362 1.878 4.134 1.969 0.492 2.126 1.387 0.945
D51-1.25" 1 1/4 2.362 2.004 4.134 2.126 0.492 2.126 1.387 0.945
D51-1.375" 1 3/8 2.638 2.154 4.528 2.244 0.492 2.126 1.387 0.945
D51-1.5" 1 1/2 2.953 2.272 5.118 2.362 0.579 2.126 1.387 0.945
D51-1.625" 1 5/8 3.228 2.429 5.512 2.52 0.579 2.126 1.387 0.945
D51-1.75" 1 3/4 3.228 2.547 5.512 2.638 0.579 2.126 1.387 0.945
D51-1.875" 1 7/8 3.228 2.665 5.512 2.756 0.579 2.126 1.387 0.945
D51-2" 2 3.228 2.744 5.512 2.835 0.579 2.126 1.387 0.945
D51-2.125" 2 1/8 3.622 2.862 5.906 2.953 0.689 2.126 1.387 0.945
D51-2.25" 2 1/4 3.622 3.02 5.906 3.11 0.689 2.126 1.387 0.945
D51-2.375" 2 3/8 3.937 3.138 6.299 3.228 0.689 2.126 1.387 0.945
D51-2.5" 2 1/2 3.937 3.256 6.299 3.346 0.689 2.126 1.387 0.945
D51-2.625" 2 5/8 4.409 3.413 7.087 3.504 0.689 2.126 1.387 0.945
D51-2.75" 2 3/4 4.409 3.531 7.087 3.622 0.689 2.126 1.387 0.945
D51-2.875" 2 7/8 4.843 3.969 7.48 3.976 0.689 2.126 1.387 0.945
D51-3" 3 4.921 4.047 7.48 4.055 0.689 2.283 1.535 0.984
D51-3.125" 3 1/8 5.118 4.244 7.48 4.252 0.689 2.283 1.535 0.984
D51-3.25" 3 1/4 5.236 4.362 7.48 4.37 0.689 2.283 1.535 0.984
D51-3.375" 3 3/8 5.315 4.441 8.661 4.449 0.846 2.283 1.535 0.984
D51-3.5" 3 1/2 5.512 4.638 8.661 4.646 0.846 2.283 1.535 0.984
D51-3.625" 3 5/8 5.591 4.717 8.661 4.724 0.846 2.283 1.535 0.984
D51-3.75" 3 3/4 5.709 4.835 8.661 4.843 0.846 2.283 1.535 0.984
D51-3.875" 3 7/8 5.906 5.031 8.661 5.039 0.846 2.283 1.535 0.984
D51-4" 4 5.906 5.031 8.661 5.039 0.846 2.283 1.535 0.984



Design Drawing of Double Cartridge Seals D51

Double Cartridge Seals D51
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