Water Lubricated Stern Tube Seal EVK2RT

Spare ring is easily activated without disassembling.

Features

Improved wear resistance
The active #1 seal ring is always lubricated by self-controlled clean fresh water. This results in the significant reduction in wear of the mating ring, the seal housing and the seal ring.
Built in spare seal ring
The spare #2 seal ring is incorporated in the seal housing as a spare. The #2 seal stands by in an idle condition under normal operation and is cooled, lubricated & protected by fresh water.
Improved operability
The active seal ring is easily changed from #1 to #2 spare seal by operation of valves . The #2 spare ring is activated without disassembling the seal unit should #1 seal ring shows increasing leakage.
Easy upgrade form existing EVK
By replacing the seal housing, it may be possible to convert an existing EVK seal to a Tandem type.

Specification

Shaft diameter range
φ101 ～ φ500 (mm)
PV (Pressure-Velocity) Value
Max. 0.6 (MPa・m/s)
(Water pressure in casing ： Max. 0.15 MPa)
  • STANDARD DIMENSIONS
(mm)
Size Sleeve dia. A B P C E L1 L2 L3 Lf T Z U α β Mass(kg)
110 101～120 270 240 148 240 168 74 46 54 Φ15 6xM12x35 16 30° 30° 32
130 121～140 290 260 168 260 168 74 46 54 Φ15 6xM12x35 16 30° 30° 35
150 141～160 310 280 188 280 168 74 46 54 Φ15 8xM12x35 16 45° 22.5° 39
170 161～180 330 300 208 300 168 74 46 54 Φ15 8xM12x35 16 45° 22.5° 42
190 181～200 350 320 228 320 168 74 46 54 Φ15 8xM12x35 16 45° 22.5° 45
210 201～220 385 350 248 345 168 74 46 51 Φ15 6xM16x40 20 40° 30° 52
230 221～240 405 370 271 375 190 91 51 68 Φ15 6xM16x40 20 40° 30° 64
250 241～260 425 390 291 395 190 91 51 68 Φ15 6xM16x40 20 40° 30° 68
270 261～280 445 410 311 415 190 91 51 68 Φ15 8xM16x40 20 45° 22.5° 73
290 281～300 465 430 331 435 190 91 51 68 Φ15 8xM16x40 20 45° 22.5° 78
310 301～320 485 450 351 455 190 91 51 68 Φ15 8xM16x40 20 45° 22.5° 82
330 321～340 520 480 371 475 192 93 51 70 Φ15 8xM20x50 26 45° 22.5° 92
350 341～360 540 500 391 495 192 93 51 70 Φ15 8xM20x50 26 45° 22.5° 95
370 361～380 560 520 411 515 192 93 51 70 Φ15 8xM20x50 26 45° 22.5° 100
390 381～400 580 540 431 535 192 93 51 70 Φ15 8xM20x50 26 45° 22.5° 104
410 401～420 640 580 515 580 222 106 55 72 Φ15 8xM24x60 31 45° 22.5° 148
430 421～440 660 600 535 600 222 106 55 72 Φ15 8xM24x60 31 45° 22.5° 158
450 441～460 680 620 555 620 222 106 55 72 Φ15 8xM24x60 31 45° 22.5° 168
470 461～480 700 640 575 640 222 106 55 72 Φ15 8xM24x60 31 45° 22.5° 178
490 481～500 720 660 595 660 222 106 55 72 Φ15 8xM24x60 31 45° 22.5° 186
  • Refer to EVK2RV catalog for other dimensions.
  • Mating flange and connecting tube fitting attached to sealing device.
  • Longer bolts can be supplied upon request when the bearing flange id fixed between the stern tube and the EVK seal.

Related Documents/Materials

Instruction Manuals
Class Documents/Materials