ZURCON RIMSEAL
When the field of application and system requirements make high demands on leakage control and operational reliability, a redundant sealing system is necessary to ensure reliable sealing of hydraulic cylinders at the piston rod. Sealing systems with elastomer-energized polymer seals are a proven answer to widely varying demands for standardised grooves, simple installation, resistance to media, high and low temperatures and pressures. The system offers enormous flexibility in the choice and matching of materials.
The piston rod sealing system for hydraulic cylinders subject to heavy loads should consist of three elements:
Turcon Stepseal 2K used as primary seal. This seal element offers the back pumping property necessary for redundant rod seal systems as well as good resistance to high and low temperatures and high media resistance.
The Zurcon Rimseal was developed as the secondary seal in this systemto ensure reliable sealing of thin oil films at low secondary pressures. A relatively soft material (polyurethane Shore D 58) is used combined with a new seal profile.
The contact pressure curve is automatically optimised under dynamic conditions.
The final outer element of the redundant sealing system is a double-acting scraper seal (e.g. DA24, DA 22, DA 17. Turcon Excluder 2 resp. 5 or Zurcon Excluder 500).
The optimum sealing system thus consists of three independent lip seals installed in line, whereby the hardness of the material decreases from the pressure side to the atmospheric side.
Method of Operation
The Zurcon Rimseal is an elastomer energised seal element. The changes in seal position in the groove necessary for an optimum sealing function are guaranteed by the combination of the two component parts (O-Ring and seal ring).
In order to achieve a contact pressure curve which enhances the sealing effect, the seal has a chamfer on the low pressure side. When under pressure and exposed to friction against the piston rod, this chamfer causes the seal to tilt slightly so that the seal ring is forced against the side of the groove. This creates an area of maximum pressure at the edge of the seal.
When the Zurcon Rimseal is used in a system with a double-acting scraper DA24 (DA 22, DA 17, ExcluderR 2 resp. 5 or 500), the sealing function of the system must be assured even if pressure build-up occurs between the Zurcon Rimseal and the double-acting scraper seal.
For this reason, the high-pressure side of the seal ring also has a chamfer which, in the event of a build-up of pressure behind the Zurcon Rimseal, comes into contact with the flank of the groove. The Zurcon Rimseal moves in the groove so that a contact pressure distribution is obtained on the piston rod which enhances the back pumping effect.
Advantages
– High static and dynamic leak tightness
– Low friction for reduced power loss
– High wear resistance for long service life
– Small groove
– Easy installation
– Optimum system element
– ISO/DIN grooves optional
– Available for any diameter from 8 to 2200 mm
Application Examples
- Mobile hydraulics
- Standard cylinders
- Machine tools
- Injection moulding machines
- Presses
Technical Data
Pressure: In tandem system: Up to 60 MPa As an individual element: 25MPa
Velocity: 5 m/s with short strokes (<1 m) in tandem system
Temperature:-45_C to +100_C depending on O-Ring material
Media: Hydraulic fluids
-Mineral oil
-Synthetic and natural esters
-HEES. HETG up to +60_C
-Flame retardant fluids HFA. HFC
Important Note:
The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, pressure, temperature and gap value.
Materials
The Zurcon Rimseal is made in the following material combinations as standard:
Zurcon Rimseal: Zurcon Z52 Special polyurethane 58 Shore D
O-Ring: NBR. 70 Shore A
Set: Z52N or Z52T
Series
The Zurcon Rimseal is a system seal and is preferably
used in tandem sealing systems in conjunction with the
Turcon Stepseal 2K. For this reason. the type series are
identical with those for the Turcon Stepseal 2K.
Table XIX shows the relationship between the series number according to the seal diameter range and the different application class sizes. These application classes are:
Standard application RR13
Light application RR15
Heavy-duty application RR11
Redundant Sealing System
Redundant sealing systems are used where the application conditions no longer permit reliable sealing over the demanded service life with a single seal.
The property of the tandem sealing system is particularly important during cold starts when, due to the very high viscosity of the oil, the primary seal allows oil to pass as the piston rod is extended. In the tandem system the oil is heated as a result of the friction at the primary seal and is then reliably wiped off – at a now lower viscosity – by the secondary seal, the Zurcon Rimseal.
As the piston rod is retracted, the oil is stored in the reservoir between the seals, and is then pumped back against the systempressure by the hydrodynamics in the seal clearance of the Turcon Stepseal 2K.
Particularly with strokes of more than 1 metre, constructional measures have to be taken to provide a storage chamber between the seals.
The Zurcon Rimseal is designed so that it also has the back pumping properties necessary when using a double-acting scraper in the rod sealing system.
Due to the controlled sealing behaviour of the individual elements in the sealing system and the appropriate combination of the seal materials, a rod seal system is obtained with a low overall friction.
The figure 26 shows a redundant rod seal system consisting of Turcon Stepseal 2K, Zurcon Rimseal and Rod Scraper DA 22 with corresponding wear ring arrangement.
Ordering example
Zurcon Rimseal complete with NBR O-Ring Series RR 13 (from table XIX).
Rod diameter: dN = 80.0 mm
Part No.: RR1300800
(from table XX).
The order number for all sizes not shown in table XX can be determined following the example opposite. For diameters ≥ 1000.0 mm multiply only by factor 1.
Example: RR13 for diameter 1200.0 mm.
Order no.: RR13X1200 – Z52N.
ZURCON RIMSEAL
| Rod | Groove Dia. | Groove Width | Part No.* | O-Ring Size | ||
| dN f8/h9 |
D1 H9 |
L1 +0.2 |
||||
| 8,0 | 15,3 | 3,2 | RR1300080-Z52N | 10.77 x 2.62 | ||
| 10,0 | 17,3 | 3,2 | RR1300100-Z52N | 12.37 x 2.62 | ||
| 12,0 | 19,3 | 3,2 | RR1300120-Z52N | 13.94 x 2.62 | ||
| 14,0 | 21,3 | 3,2 | RR1300140-Z52N | 17.12 x 2.62 | ||
| 16,0 | 23,3 | 3,2 | RR1300160-Z52N | 18.72 x 2.62 | ||
| 18,0 | 25,3 | 3,2 | RR1300180-Z52N | 20.29 x 2.62 | ||
| 20,0 | 27,3 | 3,2 | RR1500200-Z52N | 21.89 x 2.62 | ||
| 20,0 | 30,7 | 4,2 | RR1300200-Z52N | 23.40 x 3.53 | ||
| 22,0 | 29,3 | 3,2 | RR1500220-Z52N | 25.07 x 2.62 | ||
| 22,0 | 32,7 | 4,2 | RR1300220-Z52N | 26.58 x 3.53 | ||
| 25,0 | 32,3 | 3,2 | RR1500250-Z52N | 26.64 x 2.62 | ||
| 25,0 | 35,7 | 4,2 | RR1300250-Z52N | 29.75 x 3.53 | ||
| 28,0 | 35,3 | 3,2 | RR1500280-Z52N | 29.82 x 2.62 | ||
| 28,0 | 38,7 | 4,2 | RR1300280-Z52N | 32.92 x 3.53 | ||
| 30,0 | 37,3 | 3,2 | RR1500300-Z52N | 32.99 x 2.62 | ||
| 30,0 | 40,7 | 4,2 | RR1300300-Z52N | 34.52 x 3.53 | ||
| 32,0 | 39,3 | 3,2 | RR1500320-Z52N | 34.59 x 2.62 | ||
| 32,0 | 42,7 | 4,2 | RR1300320-Z52N | 36.09 x 3.53 | ||
| 35,0 | 42,3 | 3,2 | RR1500350-Z52N | 37.77 x 2.62 | ||
| 35,0 | 45,7 | 4,2 | RR1300350-Z52N | 37.70 x 3.53 | ||
| 36,0 | 43,3 | 3,2 | RR1500360-Z52N | 39.34 x 2.62 | ||
| 36,0 | 46,7 | 4,2 | RR1300360-Z52N | 40.87 x 3.53 | ||
| 40,0 | 50,7 | 4,2 | RR1500400-Z52N | 44.04 x 3.53 | ||
| 40,0 | 55,1 | 6,3 | RR1300400-Z52N | 43.82 x 5.33 | ||
| 45,0 | 55,7 | 4,2 | RR1500450-Z52N | 50.39 x 3.53 | ||
| 45,0 | 60,1 | 6,3 | RR1300450-Z52N | 50.17 x 5.33 | ||
| 50,0 | 60,7 | 4,2 | RR1500500-Z52N | 53.57 x 3.53 | ||
| 50,0 | 65,1 | 6,3 | RR1300500-Z52N | 56.52 x 5.33 | ||
| 55,0 | 65,7 | 4,2 | RR1500550-Z52N | 59.92 x 3.53 | ||
| 55,0 | 70,1 | 6,3 | RR1300550-Z52N | 59.69 x 5.33 | ||
| 56,0 | 71,1 | 6,3 | RR1300560-Z52N | 62.87 x 5.33 | ||
| 60,0 | 70,7 | 4,2 | RR1500600-Z52N | 63.09 x 3.53 | ||
| 60,0 | 75,1 | 6,3 | RR1300600-Z52N | 66.04 x 5.33 | ||
| 63,0 | 73,7 | 4,2 | RR1500630-Z52N | 66.27 x 3.53 | ||
| 63,0 | 78,1 | 6,3 | RR1300630-Z52N | 69.22 x 5.33 | ||
| 65,0 | 80,1 | 6,3 | RR1300650-Z52N | 69.22 x 5.33 | ||
| Rod | Groove Dia. | Groove Width | Part No.* | O-Ring Size | ||
| dN f8/h9 |
D1 H9 |
L1 +0.2 |
||||
| 70,0 | 85,1 | 6,3 | RR1300700-Z52N | 75.57 x 5.33 | ||
| 75,0 | 90,1 | 6,3 | RR1300750-Z52N | 81.92 x 5.33 | ||
| 80,0 | 90,7 | 4,2 | RR1500800-Z52N | 85.32 x 3.53 | ||
| 80,0 | 95,1 | 6,3 | RR1300800-Z52N | 85.09 x 5.33 | ||
| 85,0 | 100,1 | 6,3 | RR1300850-Z52N | 91.44 x 5.33 | ||
| 90,0 | 105,1 | 6,3 | RR1300900-Z52N | 94.62 x 5.33 | ||
| 95,0 | 110,1 | 6,3 | RR1300950-Z52N | 100.97 x 5.33 | ||
| 100,0 | 115,1 | 6,3 | RR1301000-Z52N | 107.32×5.33 | ||
| 105,0 | 120,1 | 6,3 | RR1301050-Z52N | 110.49 x 5.33 | ||
| 110,0 | 125,1 | 6,3 | RR1301100-Z52N | 116.84×5.33 | ||
| 110,0 | 130,5 | 8,1 | RR1101100-Z52N | 116.89 x 7.0 | ||
| 115,0 | 130,1 | 6,3 | RR1301150-Z52N | 120.02 x 5.33 | ||
| 120,0 | 135,1 | 6,3 | RR1301200-Z52N | 126.37 x 5.33 | ||
| 125,0 | 140,1 | 6,3 | RR1301250-Z52N | 129.54×5.33 | ||
| 125,0 | 145,5 | 8,1 | RR1101250-Z52N | 132.72 x 7.0 | ||
| 130,0 | 145,1 | 6,3 | RR1301300-Z52N | 135.89 x 5.33 | ||
| 135,0 | 150,1 | 6,3 | RR1301350-Z52N | 142.24 x 5.33 | ||
| 140,0 | 155,1 | 6,3 | RR1301400-Z52N | 145.42×5.33 | ||
| 145,0 | 160,1 | 6,3 | RR1301450-Z52N | 151.77 x 7.0 | ||
| 150,0 | 165,1 | 6,3 | RR1301500-Z52N | 158.12 x 5.33 | ||
| 150,0 | 170,5 | 8,1 | RR1101500-Z52N | 158.12 x 7.0 | ||
| 155,0 | 170,1 | 6,3 | RR1301550-Z52N | 158.12 x 5.33 | ||
| 160,0 | 175,1 | 6,3 | RR1301600-Z52N | 164.47×5.33 | ||
| 160,0 | 180,5 | 8,1 | RR1101600-Z52N | 170.82 x 7.0 | ||
| 165,0 | 180,1 | 6,3 | RR1301650-Z52N | 170.82 x 5.33 | ||
| 170,0 | 185,1 | 6,3 | RR1301700-Z52N | 177.17 x 5.33 | ||
| 175,0 | 190,1 | 6,3 | RR1301750-Z52N | 183.52 x 5.33 | ||
| 180,0 | 195,1 | 6,3 | RR1301800-Z52N | 183.52×5.33 | ||
| 180,0 | 200,5 | 8,1 | RR1101800-Z52N | 189.87 x 7.0 | ||
| 185,0 | 200,1 | 6,3 | RR1301850-Z52N | 189.87 x 5.33 | ||
| 190,0 | 205,1 | 6,3 | RR1301900-Z52N | 196.22 x 5.33 | ||
| 200,0 | 220,5 | 8,1 | RR1302000-Z52N | 215.27 x 7.0 | ||
| 210,0 | 230,5 | 8,1 | RR1302100-Z52N | 215.27 x 7.0 | ||
| 220,0 | 240,5 | 8,1 | RR1302200-Z52N | 227.97 x 7.0 | ||
| 230,0 | 250,5 | 8,1 | RR1302300-Z52N | 240.67 x 7.0 | ||
| 240,0 | 260,5 | 8,1 | RR1302400-Z52N | 253.37 x 7.0 | ||
| 250,0 | 270,5 | 8,1 | RR1302500-Z52N | 266.07 x 7.0 | |
| 260,0 | 284,0 | 8,1 | RR1302600-Z52N | 266.07 x 7.0 | |
| 280,0 | 304,0 | 8,1 | RR1302800-Z52N | 291.47 x 7.0 | |
| 300,0 | 324,0 | 8,1 | RR1303000-Z52N | 316.87 x 7.0 | |
| 310,0 | 334,0 | 8,1 | RR1303100-Z52N | 316.87 x 7.0 | |
| 320,0 | 344,0 | 8,1 | RR1303200-Z52N | 329.57 x 7.0 | |
| 340,0 | 364,0 | 8,1 | RR1303400-Z52N | 354.97 x 7.0 | |
| 350,0 | 374,0 | 8,1 | RR1303500-Z52N | 367.67 x 7.0 | |
| 360,0 | 384,0 | 8,1 | RR1303600-Z52N | 367.67 x 7.0 | |
| 380,0 | 404,0 | 8,1 | RR1303800-Z52N | 393.07 x 7.0 | |
| 400,0 | 424,0 | 8,1 | RR1304000-Z52N | 417.96 x 7.0 | |
| 420,0 | 444,0 | 8,1 | RR1304200-Z52N | 430.66 x 7.0 | |
| 450,0 | 474,0 | 8,1 | RR1304500-Z52N | 468.76 x 7.0 | |
| 480,0 | 504,0 | 8,1 | RR1304800-Z52N | 494.16 x 7.0 | |
| 500,0 | 524,0 | 8,1 | RR1305000-Z52N | 506.86 x 7.0 | |
| 600,0 | 624,0 | 8,1 | RR1306000-Z52N | 608.08 x 7.0 | |
| 6,0 | 11,0 | 2,2 | 0,5 | RR 6000060 | 7.65 x 1.78 |
| 8,0 | 13,0 | 2,2 | 0,5 | RR 6000080 | 9.5 x 1.8 |
| 10,0 | 15,0 | 2,2 | 0,5 | RR 6000100 | 11.8 x 1.8 |
| 10,0 | 17,5 | 3,2 | 0,5 | RR 6100100 | 12.37 x 2.62 |
| 12,0 | 17,0 | 2,2 | 0,5 | RR 6000120 | 14.00 x 1.78 |
| 12,0 | 19,5 | 3,2 | 0,5 | RR 6100120 | 13.94 x 2.62 |
| 14,0 | 19,0 | 2,2 | 0,5 | RR 6000140 | 15.60 x 1.78 |
| 14,0 | 21,5 | 3,2 | 0,5 | RR 6100140 | 17.12 x 2.62 |
| 16,0 | 23,5 | 3,2 | 0,5 | RR 6100160 | 18.72 x 2.62 |
| 18,0 | 25,5 | 3,2 | 0,5 | RR 6100180 | 20.29 x 2.62 |
| 20,0 | 27,5 | 3,2 | 0,5 | RR 6100200 | 23.47 x 2.62 |
| 20,0 | 31,0 | 4,2 | 0,5 | RR 6200200 | 25.00 x 3.53 |
| 22,0 | 29,5 | 3,2 | 0,5 | RR 6100220 | 25.07 x 2.62 |
| 22,0 | 33,0 | 4,2 | 0,5 | RR 6200220 | 26.58 x 3.53 |
| 25,0 | 32,5 | 3,2 | 0,5 | RR 6100250 | 28.24 x 2.62 |
| 25,0 | 36,0 | 4,2 | 0,5 | RR 6200250 | 29.75 x 3.53 |
| 28,0 | 39,0 | 4,2 | 0,5 | RR 6200280 | 32.92 x 3.53 |
| 32,0 | 43,0 | 4,2 | 0,5 | RR 6200320 | 36.09 x 3.53 |
| 36,0 | 47,0 | 4,2 | 0,5 | RR 6200360 | 40.87 x 3.53 |
| 40,0 | 51,0 | 4,2 | 0,5 | RR 6200400 | 44.04 x 3.53 |
| 45,0 | 56,0 | 4,2 | 0,5 | RR 6200450 | 50.39 x 3.53 |
| 50,0 | 61,0 | 4,2 | 0,5 | RR 6200500 | 53.57 x 3.53 |
| 56,0 | 67,0 | 4,2 | 0,5 | RR 6200560 | 59.92 x 3.53 |
| 56,0 | 71,5 | 6,3 | 0,9 | RR 6300560 | 62.87 x 5.33 |
| 63,0 | 74,0 | 4,2 | 0,5 | RR 6200630 | 66.27 x 3.53 |
| 63,0 | 78,5 | 6,3 | 0,9 | RR 6300630 | 78.97 x 3.53 |
| 70,0 | 85,5 | 6,3 | 0,9 | RR 6300700 | 85.32 x 3.53 |
| 80,0 | 95,5 | 6,3 | 0,9 | RR 6300800 | 85.09 x 5.33 |
| 90,0 | 105,5 | 6,3 | 0,9 | RR 6300900 | 94.62 x 5.33 |
| 100,0 | 115,5 | 6,3 | 0,9 | RR 6301000 | 107.32 x 5.33 |
| 110,0 | 125,5 | 6,3 | 0,9 | RR 6301100 | 116.84 x 5.33 |
| 125,0 | 140,5 | 6,3 | 0,9 | RR 6301250 | 132.72 x 5.33 |
| 140,0 | 155,5 | 6,3 | 0,9 | RR 6301400 | 145.42 x 5.33 |
| 160,0 | 175,5 | 6,3 | 0,9 | RR 6301600 | 164.47 x 5.33 |
| 160,0 | 181,0 | 8,1 | 0,9 | RR 6401600 | 170.82 x 7.00 |
| 180,0 | 195,5 | 6,3 | 0,9 | RR 6301800 | 189.87 x 5.33 |
| 180,0 | 201,0 | 8,1 | 0,9 | RR 6401800 | 189.87 x 7.00 |
| 200,0 | 221,0 | 8,1 | 0,9 | RR 6402000 | 215.27 x 7.00 |
| 220,0 | 241,0 | 8,1 | 0,9 | RR 6402200 | 227.97 x 7.00 |
| 250,0 | 271,0 | 8,1 | 0,9 | RR 6402500 | 266.07 x 7.00 |
| 280,0 | 304,5 | 8,1 | 0,9 | RR 6402800 | 291.47 x 7.00 |
| 320,0 | 344,5 | 8,1 | 0,9 | RR 6403200 | 329.57 x 7.00 |
| 360,0 | 384,5 | 8,1 | 0,9 | RR 6403600 | 367.67 x 7.00 |
Ordering Example
Zurcon Rimseal to ISO 7425/2
Rod diameter: dN = 63.0 mm
Groove width: L1 = 4.2 mm
Part No. RR6200630
Standard application with NBR-O-Ring
Material set code: Z52N
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