DMD2000 V-RING
The HUNGER DMD Tandem 2000 V-packing System consists of a special U-cup sealing element preceded by pressure reducing low friction wear resistant V-Packings and a support ring to provide the correct system pretension. The combined elements provide low friction stick-slip free movement at both high and low operating speeds.
The number of V-packings and width of support ring can be varied according to the existing installation groove dimensions.
The U-cup has an integrated sealing ring made from a low friction and low wear PTFE-Compound which guarantees smooth operation at high operating pressures and stick-slip free movement after long periods of inactivity. In general, packing widths correspond to groove widths. The DMD Tandem 2000 is only suitable for rod sealing in non-adjustable installation grooves.
Materials | |||
Pressure Ring | V-Packing | ||
Standard | PUR | PTFE-Pure | |
Alternative (on request) | NBR, HLTR, FKM, PUR-H | NBR, NBR-TT, FKM, PTFE-Compounds, Engineering Plastics | |
Application Range | |||
Pressure [bar] | Temperature Range [°C] | Sliding Speed [m/s] | |
Standard | 360 [450*] | -35 … +100 | 1 |
Design Hints Surface Finish | |||
Surface Quality | Surface Hardness | ||
Ra [µm] | Rt [µm] | [HRC] | |
Sliding Surfaces | 0.1 – 0.3 | ≤ 1.5 | > 40 |
Groove Base | 0.8 | ≤ 6.3 | |
Groove Sides | 3.2 | ≤ 15 |
SIZE
d | D | b | b1 | Ref. Number |
40 | 48 | 22,5 | 22,5 | 409247 |
40 | 52 | 22,5 | 22,5 | 411572 |
56 | 71 | 22,5 | 22,5 | 77024 |
63 | 78 | 22,5 | 22,5 | 425551 |
80 | 95 | 22,5 | 22,5 | 77952 |
100 | 120 | 32 | 32 | 77959 |
140 | 155 | 40 | 40 | 422321 |
140 | 160 | 40 | 40 | 424846 |
150 | 170 | 40 | 40 | 422132 |
160 | 180 | 40 | 40 | 77074 |
180 | 200 | 40 | 40 | 76798 |
200 | 230 | 60 | 60 | 407840 |
210 | 240 | 60 | 60 | 422326 |
220 | 250 | 60 | 60 | 418536 |
230 | 260 | 60 | 60 | 405451 |
260 | 280 | 30 | 30 | 423352 |
260 | 280 | 42,5 | 42,5 | 417209 |
260 | 280 | 50,5 | 50,5 | 411963 |
280 | 310 | 60 | 60 | 407841 |
290 | 320 | 60 | 60 | 425300 |
300 | 330 | 58 | 58 | 78003 |
300 | 330 | 60 | 60 | 417207 |
360 | 390 | 50,5 | 50,5 | 78015 |
360 | 390 | 60 | 60 | 418913 |
400 | 430 | 54,5 | 54,5 | 76735 |
600 | 640 | 58 | 58 | 77000 |
650 | 690 | 70 | 70 | 77077 |
800 | 840 | 58 | 58 | 76999 |
810 | 850 | 70 | 70 | 76883 |