WS-D33
Wiper WS-D33
Description
The WS-D33 is a double-acting, double O-ring energized, rod wiper designed to include two different unique wiping geometries. The two lips combine to scrape debris from the rod and contain residual oil on rod extension, as well as allowing oil to pump back into the cylinder. The O-ring energizers provide the force necessary to maintain the engagement of the wiping lips against the sliding surface and allow the wiper to adjust for deflection. This seal is capable of high speed applications and eliminates any potential for stick-slip. The WS-D33 works well paired with rod seals that support the requisite dynamic pressure pump-back, like the RS-11 rod seal. When paired, they produce a sealing system capable of handling higher speeds, a large range of fluid compatibilities, and temperature range of service. For other rod seal arrangements with WS-D33, it is necessary to make sure the rod seal will provide proper pressure pump-back, or alternatively vent the system. The WS-D33 wiper is built to service moderate to slightly heavy-duty applications. It has the advantages of improved sealing function due to its twin energizer arrangement.
Advantages compared to WS-D31 and WS-D32
- easier installation in closed groove
- improved radial flexibility
- improved sealing function due to O-Ring arrangement
Disadvantages compared to WS-D31 and WS-D32
- 2 O-Rings Required
- not completely axially locked in the groove
- more disposed to wrong installation
Operating parameters
| Material | PTFE Bronze + NBR | PTFE Bronze + FKM |
| Temperature (min.) °C | -30 | -15 |
| Temperature (max.) °C | +100 | +200 |
| Speed m/sec | ≤5 | ≤5 |
Installation
Though it is easier to install in the groove, care must be taken to ensure it is not installed backwards and to ensure the proper fit of three individual components.
Installation dimensions
| Rod dN f8/h9 |
Groove Diameter |
Groove Width |
Bore Diameter |
Radius | Step Width |
O-Ring cross- section |
||||||
| Recommended Range | Available Range | D3 H9 | L3 +0,2 | D4 H11 | r1 max. | a min. | d2 | |||||
| 19,0 - 39,9 | 19,0 - 130,0 | dN + 7,6 | 4,2 | d + 1,0 | 0,4 | 3 | 1,78 | |||||
| 40,0 - 69,9 | 30,0 - 250,0 | dN + 8,8 | 6,3 | d + 1,5 | 1 | 3 | 2,62 | |||||
| 70,0 - 139,9 | 50,0 - 450,0 | dN + 12,2 | 8,1 | d + 2,0 | 1,2 | 4 | 3,53 | |||||
| 140,0 - 399,9 | 80,0 - 650,0 | dN + 16,0 | 11,5 | d + 2,0 | 2 | 5 | 5,33 | |||||
| 400,0 - 649,9 | 180,0 - 650,0 | dN + 24,0 | 15,5 | d + 2,5 | 2,5 | 8 | 7 | |||||
| 650,0 - 999,9 | 300,0 - 999,9 | dN + 27,3 | 18 | d + 2,5 | 2,5 | 10 | 8,4 | |||||
Customized seals
We can also produce this wiper ourselves on request in the materials listed below. This is our type DA117.
| Materiaalomschrijving | Kleur | Afmetingen |
| Polyurethane 72° Shore D (Z51®) | Naturel | 5 - 300 mm |
| Polyurethane 58° Shore D (Z52®) | Naturel | 5 - 300 mm |
| Polyurethane 57° Shore D | Blue | 5 - 350 mm |
| Virgin PTFE | White | 5 - 500 mm |
| PTFE with 40% Bronze | Brown | 5 - 500 mm |
| PTFE with 25% Carbon | Gray | 5 - 500 mm |
| PTFE with 15% Glass and 5% MoS2 | Gray | 5 - 210 mm |
| PTFE with 25% Glass | White | 5 - 150 mm |
| PTFE with 15% Graphite | Black | 5 - 150 mm |
| PTFE with 1% Turquoise | Turquoise | 5 - 150 mm |
| UHMW-PE | Naturel | 5 - 130 mm |
Sizes
| Seal Supply | Rod Diameter |
Groove Diameter |
Groove Width |
Bore Diameter |
Radius | Step Width |
TSS Part No. | O-Ring Size |
| dN f8/h9 | D3 H9 | L3 +0,2 | D4 H11 | r1 max. | a min. | |||
| 280794 | 20,00 | 27,60 | 4,20 | 21,0 | 0,4 | 3,0 | WEF000200 | 23,53 x 1,78 |
| 280925 | 25,00 | 32,60 | 4,20 | 26,0 | 0,4 | 3,0 | WEF000250 | 29,87 x 1,78 |
| 280926 | 28,00 | 35,60 | 4,20 | 29,0 | 0,4 | 3,0 | WEF000280 | 33,05 x 1,78 |
| 280927 | 30,00 | 37,60 | 4,20 | 31,0 | 0,4 | 3,0 | WEF000300 | 34,65 x 1,78 |
| 280928 | 32,00 | 39,60 | 4,20 | 33,0 | 0,4 | 3,0 | WEF000320 | 36,27 x 1,78 |
| 280929 | 35,00 | 42,60 | 4,20 | 36 | 0,4 | 3,0 | WEF000350 | 39,45 x 1,78 |
| 280962 | 36,00 | 43,60 | 4,20 | 37 | 0,4 | 3,0 | WEF000360 | 41,00 x 1,78 |
| 280930 | 40,00 | 48,80 | 6,30 | 41,5 | 0,8 | 3,0 | WEF100400 | 44,12 x 2,62 |
| 280931 | 42,00 | 50,80 | 6,30 | 43,5 | 0,8 | 3,0 | WEF100420 | 45,69 x 2,62 |
| 280932 | 45,00 | 53,80 | 6,30 | 46,5 | 0,8 | 3,0 | WEF100450 | 48,90 x 2,62 |
| 280933 | 50,00 | 58,80 | 6,30 | 51,5 | 0,8 | 3,0 | WEF100500 | 53,65 x 2,62 |
| 280934 | 55,00 | 63,80 | 6,30 | 56,5 | 0,8 | 3,0 | WEF100550 | 58,42 x 2,62 |
| 280935 | 56,00 | 64,80 | 6,30 | 57,5 | 0,8 | 3,0 | WEF100560 | 60,00 x 2,62 |
| 280936 | 60,00 | 68,80 | 6,30 | 61,5 | 0,8 | 3,0 | WEF100600 | 63,17 x 2,62 |
| 280937 | 63,00 | 71,80 | 6,30 | 64,5 | 0,8 | 3,0 | WEF100630 | 66,35 x 2,62 |
| 280938 | 65,00 | 73,80 | 6,30 | 66,5 | 0,8 | 3,0 | WEF100650 | 67,95 x 2,62 |
| 280939 | 70,00 | 82,20 | 8,10 | 72 | 1,0 | 4,0 | WEF200700 | 75,80 x 3,53 |
| 280940 | 75,00 | 87,20 | 8,10 | 77,00 | 1,0 | 4,0 | WEF200750 | 78,97 x 3,53 |
| 280941 | 80,00 | 92,20 | 8,10 | 82,00 | 1,0 | 4,0 | WEF200800 | 85,32 x 3,53 |
| 280942 | 85,00 | 97,20 | 8,10 | 87,00 | 1,0 | 4,0 | WEF200850 | 88,50 x 3,53 |
| 280943 | 90,00 | 102,20 | 8,10 | 92,00 | 1,0 | 4,0 | WEF200900 | 94,84 x 3,53 |
| 280944 | 100,00 | 112,20 | 8,10 | 102,00 | 1,0 | 4,0 | WEF201000 | 104,37 x 3,53 |
| 280945 | 110,00 | 122,20 | 8,10 | 112,00 | 1,0 | 4,0 | WEF201100 | 113,90 x 3,53 |
| 280946 | 115,00 | 127,20 | 8,10 | 117,00 | 1,0 | 4,0 | WEF201150 | 120,25 x 3,53 |
| 280947 | 120,00 | 132,20 | 8,10 | 122,00 | 1,0 | 4,0 | WEF201200 | 123,42 x 3,53 |
| 280948 | 125,00 | 137,20 | 8,10 | 127,00 | 1,0 | 4,0 | WEF201250 | 129,77 x 3,53 |
| 280949 | 130,00 | 142,20 | 8,10 | 132,00 | 1,0 | 4,0 | WEF201300 | 136,12 x 3,53 |
| 280950 | 140,00 | 156,00 | 11,50 | 142,00 | 1,0 | 4,0 | WEF201400 | 145,42 x 5,33 |
| 280951 | 150,00 | 166,00 | 11,50 | 152,00 | 2,0 | 5,0 | WEF301500 | 155,00 x 5,30 |
| 280952 | 160,00 | 176,00 | 11,50 | 162,00 | 2,0 | 5,0 | WEF301600 | 164,47 x 5,33 |
| 280953 | 170,00 | 186,00 | 11,50 | 172,00 | 2,0 | 5,0 | WEF301700 | 175,00 x 5,30 |
| 280954 | 180,00 | 196,00 | 11,50 | 182,00 | 2,0 | 5,0 | WEF301800 | 183,52 x 5,33 |
| 280955 | 200,00 | 216,00 | 11,50 | 202,00 | 2,0 | 5,0 | WEF302000 | 202,57 x 5,33 |
| 280956 | 220,00 | 236,00 | 11,50 | 222,00 | 2,0 | 5,0 | WEF302200 | 227,97 x 5,33 |
| 280957 | 230,00 | 246,00 | 11,50 | 232,00 | 2,0 | 5,0 | WEF302300 | 234,32 x 5,33 |
| 280958 | 240,00 | 256,00 | 11,50 | 242,00 | 2,0 | 5,0 | WEF302400 | 247,02 x 5,33 |
| 280959 | 250,00 | 266,00 | 11,50 | 252,00 | 2,0 | 5,0 | WEF302500 | 253,37 x 5,33 |
| 280960 | 260,00 | 276,00 | 11,50 | 262,00 | 2,0 | 5,0 | WEF302600 | 266,07 x 5,33 |
| 280963 | 280,00 | 296,00 | 11,50 | 282,00 | 2,0 | 5,0 | WEF302800 | 290,00 x 5,30 |
| 280961 | 300,00 | 316,00 | 11,50 | 302,00 | 2,0 | 5,0 | WEF303000 | 304,17 x 5,33 |
| 280964 | 320,00 | 336,00 | 11,50 | 322,00 | 2,0 | 5,0 | WEF303200 | 329,57 x 5,33 |
| 280965 | 340,00 | 356,00 | 11,50 | 342,00 | 2,0 | 5,0 | WEF303400 | 345,00 x 5,30 |
| 280966 | 360,00 | 376,00 | 11,50 | 362,00 | 2,0 | 5,0 | WEF303600 | 365,00 x 5,30 |
| 280967 | 400,00 | 416,00 | 11,50 | 402,00 | 2,0 | 5,0 | WEF304000 | 405,26 x 5,33 |
