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Single-spring Elastomer Bellow Seals R11 for John Crane Type 1 and John Crane Type 1A

Elastomer Bellow Seals R11
Replacement for:
  • John crane type 1
  • John crane type 1A
Features:
  • Single-spring
  • Bulk production
  • Available in stock

Operating Limits of Elastomer Bellow Seals R11

The performance capabilities of elastomer bellow seals R11 are as follows:
  • Temperature: -20℃ to 150℃, dependent on the elastomer
  • Pressure: Up to 10 bar
  • Speed:  Up to 12 m/s
  • End play/axial float allowance: ±0.1mm

Sizes of Elastomer Bellow Seals R11

5/8” to 4”

Materials Selection of Elastomer Bellow Seals R11

Different parts of the elastomer bellow seals R11 are manufactured from different material combination:
  • Face: Carbon, SiC, TC
  • Seat: Ceramic, SiC, TC
  • Bellow: NBR, EPDM, VITON etc.
  • Spring: SS304, SS316
  • Metal parts: SS304, SS316


Specification of Elastomer Bellow Seals R11

Elastomer Bellow
Seals By Size
d D D1 L1 L2
R11-5/8" 15.87 27.8 31.75 10.31 33.5
R11-3/4" 19.05 30.6 34.93 10.31 33.5
R11-7/8" 22.22 34.9 38.1 10.31 35.1
R11-1" 25.4 38.1 41.28 11.1 39.9
R11-1 1/8" 28.57 41.3 44.45 11.1 41.3
R11-1 1/4" 31.75 46 47.63 11.1 41.3
R11-1 3/8" 34.92 47.6 50.8 11.1 42.8
R11-1 1/2" 38.1 50.8 53.98 11.1 42.8
R11-1 5/8" 41.27 57.2 60.33 12.7 50.8
R11-1 3/4" 44.45 60.3 63.5 12.7 50.8
R11-1 7/8" 47.62 63.5 66.68 12.7 54
R11-2" 50.8 66.7 69.85 12.7 54
R11-2 1/8" 53.97 71.4 76.2 14.27 60.3
R11-2 1/4" 57.15 74.6 79.38 14.27 60.3
R11-2 3/8" 60.32 77.8 82.55 14.27 63.5
R11-2 1/2" 63.5 80.9 85.73 14.27 63.5
R11-2 5/8" 66.67 85.7 85.73 15.88 69.9
R11-2 3/4" 69.85 88.9 88.9 15.88 69.9
R11-2 7/8" 73.02 92.1 95.25 15.88 73
R11-3" 76.2 95.3 98.43 15.88 73
R11-3 1/8" 79.37 101.6 101.6 19.84 79.4
R11-3 1/4" 82.55 104.8 104.78 19.84 79.4
R11-3 3/8" 85.72 108 107.95 19.84 79.4
R11-3 1/2" 88.9 111.1 111.13 19.84 79.4
R11-3 5/8" 92.07 114.3 114.3 19.84 82.6
R11-3 3/4" 95.25 117.5 117.48 19.84 82.6
R11-3 7/8" 98.42 120.7 120.65 19.84 85.7
R11-4" 101.6 123.8 123.83 19.84 85.7


Design Drawing of Elastomer Bellows Mechanical Seals R11

Elastomer Bellow Seals R11
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