The Parker Prädifa C1 rod seal is a U-ring with an interference fit on the outer diameter. Excellent sealing performance is achieved with minimal profile width and height. Extremely low friction due to the short seal contact area. Use in pneumatic equipment is only possible with constant lubricant supply, e.g. oiled air. For non-oiled (dry air) pneumatic systems, we recommend our E5 product series.
Good wear resistance.
- Easy installation.
- High-temperature resistance in case of suitable compound selection.
- Excellent media resistance in case of suitable compound selection.
- Suitable compounds available for special requirements of the chemical process industry.
- Suitable compounds available for special requirements of the food processing industry.
- Installation in closed and undercut housings.
Range of application
The Parker Praedifa C1 rod seal is particularly suitable for plungers, piston rods, stems, and valve lifters as well as for slowly operating pneumatic rotors (v ≤ 0.2 m/s).
Operating pressure 1)
Hydraulics ≤ 160 bar
Pneumatics ≤ 16 bar
Rotary transmissions ≤ 20 bar Operating temperature
Hydraulics -35 °C to +100 °C
Pneumatics -35 °C to +80 °C
Sliding speed
Hydraulics ≤ 0.5 m/s
Pneumatics ≤ 1 m/s
Rotary transmissions ≤ 0.2 m/s
Recommendation for rotary transmissions: P × v ≤ 3
(Definition see catalogue „Hydraulic Seals“, chapter „Rotary Seals“, introduction).
1) Dependent upon cross-section and compound.
Compounds
Standard: N3571, NBR compound (≈ 70 Shore A).
For low temperatures: N8602, NBR compound (≈ 70 Shore A). For high temperatures: V3664, FKM compound (≈ 85 Shore A).
Installation
The profile C1 rod seals are manufactured oversized on the external diameters in relation to the nominal dimensions. This ensures the required tight fit. Only after installation, the sealing lip diameter will show the desired dimensions. Profile C1 can easily be snapped into the grooves.
When choosing a seal for a particular diameter, it is best to select the one with the largest possible cross-section.
Note: For nominal diameters, ≤ 25 mm an open housing is recommended, according to the seals cross-section and the position of the groove (stuffing box installation).
| d | D | H | L | Order code | d | D | H | L | Order code | |
| 2 | 7 | 3.5 | 4 | C10003N3571 | 11 | 18 | 4.5 | 5 | C11025N3571 | |
| 3 | 7 | 3 | 3.5 | C10005N3571 | 12 | 18.5 | 4.5 | 5 | C11028N3571 | |
| 3 | 9 | 4.5 | 5 | C10009N3571 | 12 | 19 | 4.5 | 5 | C11030N3571 | |
| 3 | 10 | 5 | 5.5 | C10011N3571 | 12 | 20 | 5.5 | 6 | C11033N3571 | |
| 4 | 8 | 3 | 3.5 | C10013N3571 | 12.75 | 19.2 | 3.8 | 4.3 | C11035N3571 | |
| 4 | 9 | 3.5 | 4 | C10016N3571 | 13 | 17.5 | 2.8 | 3.3 | C11036N3571 | |
| 4 | 10 | 4.2 | 4.7 | C10019N3571 | 13.8 | 22 | 5.5 | 6 | C11037N3571 | |
| 4 | 12 | 4.5 | 5 | C10022N3571 | 14 | 19 | 3.5 | 4 | C11039N3571 | |
| 4 | 12 | 5.5 | 6 | C10024N3571 | 14 | 20 | 4.8 | 5.3 | C11040N3571 | |
| 4 | 14 | 5.8 | 6.3 | C10028N3571 | 14 | 22 | 5.5 | 6 | C11041N3571 | |
| 4.5 | 8 | 3 | 3.5 | C10032N3571 | 14 | 25 | 8 | 8.5 | C11042N3571 | |
| 5 | 9 | 2.5 | 3 | C10035N3571 | 15 | 22 | 5 | 5.5 | C11044N3571 | |
| 5 | 10 | 4 | 4.5 | C10038N3571 | 16 | 22.5 | 4.5 | 5 | C11049N3571 | |
| 5 | 12 | 4.5 | 5 | C10041N3571 | 16 | 23 | 5.5 | 6 | C11051N3571 | |
| 6 | 10 | 3 | 3.5 | C10055N3571 | 16 | 24 | 5.5 | 6 | C11053N3571 | |
| 6 | 12 | 4.2 | 4.7 | C10058N3571 | 16 | 26 | 7 | 7.5 | C11056N3571 | |
| 6 | 13 | 5 | 5.5 | C10059N3571 | 17 | 25 | 5.5 | 6 | C11060N3571 | |
| 6 | 15 | 7 | 7.5 | C10062N3571 | 18 | 25 | 4.5 | 5 | C11062N3571 | |
| 6 | 16 | 5 | 5.5 | C10065N3571 | 18 | 25 | 5.5 | 6 | C11063N3571 | |
| 7 | 13 | 4 | 4.5 | C10070N3571 | 18 | 26 | 5.5 | 6 | C11066N3571 | |
| 8 | 14 | 4 | 4.5 | C10074N3571 | 18.5 | 25.5 | 5.5 | 6 | C11074N3571 | |
| 8 | 14.5 | 4.5 | 5 | C10077N3571 | 20 | 26 | 4 | 4.5 | C12003N3571 | |
| 8 | 16 | 5.5 | 6 | C10080N3571 | 20 | 26 | 4.8 | 5.3 | C12005N3571 | |
| 8 | 18 | 8 | 8.5 | C10083N3571 | 20 | 28 | 5.5 | 6 | C12009N3571 | |
| 9 | 14 | 3.5 | 4 | C10087N3571 | 20 | 28 | 8 | 8.5 | C12013N3571 | |
| 9.3 | 14 | 3 | 3.5 | C10090N3571 | 20 | 30 | 7 | 7.5 | C12020N3571 | |
| 9.5 | 18.5 | 7 | 7.5 | C10094N3571 | 20 | 32 | 7 | 7.5 | C12022N3571 | |
| 10 | 13.6 | 2.3 | 2.7 | C11002N3571 | 22 | 29 | 5.5 | 6 | C12025N3571 | |
| 10 | 15 | 3.5 | 4 | C11005N3571 | 22 | 30 | 5.5 | 6 | C12029N3571 | |
| 10 | 16 | 4.5 | 5 | C11008N3571 | 23 | 31 | 5.5 | 6 | C12038N3571 | |
| 10 | 16 | 6 | 6.5 | C11011N3571 | 24 | 32 | 5.5 | 6 | C12043N3571 | |
| 10 | 18 | 5.5 | 6 | C11015N3571 | 25 | 32 | 5.5 | 6 | C12053N3571 | |
| 10 | 20 | 7 | 7.5 | C11018N3571 | 25 | 33 | 5.5 | 6 | C12058N3571 | |
| 11 | 17 | 4 | 4.5 | C11022N3571 | 25 | 33 | 8 | 8.5 | C12061N3571 |
| d | D | H | L | Order code | d | D | H | L | Order code | |
| 25 | 35 | 6 | 6.5 | C12064N3571 | 54 | 64 | 7 | 7.5 | C15035N3571 | |
| 25 | 35 | 7 | 7.5 | C12065N3571 | 55 | 65 | 7 | 7.5 | C15040N3571 | |
| 25 | 37 | 8.5 | 9.5 | C12069N3571 | 56 | 66 | 7 | 7.5 | C15043N3571 | |
| 25 | 40 | 10 | 11 | C12075N3571 | 57 | 67 | 7 | 7.5 | C15053N3571 | |
| 26 | 36 | 7 | 7.5 | C12078N3571 | 58 | 68 | 7 | 7.5 | C15058N3571 | |
| 28 | 36 | 5.5 | 6 | C12085N3571 | 60 | 72 | 8.5 | 9.5 | C16005N3571 | |
| 28 | 38 | 7 | 7.5 | C12089N3571 | 60 | 80 | 14 | 15 | C16010N3571 | |
| 30 | 38 | 5.5 | 6 | C13005N3571 | 63 | 73 | 7 | 7.5 | C16025N3571 | |
| 30 | 38 | 8 | 8.5 | C13010N3571 | 63 | 75 | 8.5 | 9.5 | C16035N3571 | |
| 30 | 40 | 7 | 7.5 | C13015N3571 | 63 | 78 | 8.5 | 9.5 | C16036N3584 | |
| 30 | 42 | 8 | 8.5 | C13019N3571 | 64 | 76 | 7.5 | 8 | C16040N3571 | |
| 30 | 42 | 8.5 | 9.5 | C13020N3571 | 65 | 77 | 8.5 | 9.5 | C16055N3571 | |
| 32 | 40 | 5.5 | 6 | C13025N3571 | 68 | 80 | 8.5 | 9.5 | C16070N3571 | |
| 32 | 42 | 7 | 7.5 | C13030N3571 | 70 | 82 | 8.5 | 9.5 | C17003N3571 | |
| 33 | 43 | 7 | 7.5 | C13035N3571 | 75 | 87 | 8.5 | 9.5 | C17020N3571 | |
| 34 | 44 | 7 | 7.5 | C13040N3571 | 75 | 95 | 14 | 15 | C17030N3571 | |
| 35 | 43 | 8 | 8.5 | C13045N3571 | 80 | 90 | 7 | 7.5 | C18010N3571 | |
| 35 | 45 | 7 | 7.5 | C13050N3571 | 80 | 92 | 8.5 | 9.5 | C18015N3571 | |
| 36 | 46 | 7 | 7.5 | C13055N3571 | 80 | 100 | 14 | 15 | C18025N3571 | |
| 36 | 50 | 10 | 11 | C13057N3571 | 85 | 97 | 8.5 | 9.5 | C18040N3571 | |
| 38 | 48 | 7 | 7.5 | C13060N3571 | 85 | 100 | 10 | 11 | C18045N3571 | |
| 40 | 48 | 8 | 8.5 | C14010N3571 | 90 | 102 | 8.5 | 9.5 | C19015N3571 | |
| 40 | 50 | 7 | 7.5 | C14015N3571 | 90 | 110 | 16 | 17 | C19018N3571 | |
| 40 | 52 | 8.5 | 9.5 | C14020N3571 | 95 | 107 | 8.5 | 9.5 | C19035N3571 | |
| 42 | 52 | 7 | 7.5 | C14025N3571 | 100 | 110 | 7 | 7.5 | C1A010N3571 | |
| 44 | 54 | 7 | 7.5 | C14030N3571 | 100 | 115 | 10 | 11 | C1A015N3571 | |
| 45 | 55 | 7 | 7.5 | C14035N3571 | 105 | 120 | 10 | 11 | C1A051N3571 | |
| 46 | 56 | 7 | 7.5 | C14046N3571 | 105 | 125 | 12 | 13 | C1A055N3571 | |
| 47 | 57 | 7 | 7.5 | C14055N3571 | 110 | 125 | 10 | 11 | C1B015N3571 | |
| 48 | 58 | 7 | 7.5 | C14060N3571 | 110 | 130 | 14 | 15 | C1B020N3571 | |
| 50 | 58 | 8 | 8.5 | C15005N3571 | 115 | 130 | 10 | 11 | C1B040N3571 | |
| 50 | 60 | 7 | 7.5 | C15010N3571 | 120 | 135 | 10 | 11 | C1C015N3571 | |
| 50 | 63 | 8.5 | 9.5 | C15015N3571 | 120 | 140 | 14 | 15 | C1C020N3571 | |
| 50 | 66 | 11 | 12 | C15020N3571 | 125 | 140 | 10 | 11 | C1C035N3571 |
| d | D | H | L | Ordercode |
| 125 | 145 | 12 | 13 | C1C037N3571 |
| 130 | 145 | 10 | 11 | C1D015N3571 |
| 135 | 150 | 10 | 11 | C1D035N3571 |
| 140 | 160 | 14 | 15 | C1E015N3571 |
| 145 | 165 | 13 | 14 | C1E050N3571 |
| 150 | 170 | 14 | 15 | C1F020N3571 |
| 155 | 170 | 10 | 11 | C1F053N3571 |
| 160 | 180 | 14 | 15 | C1G015N3571 |
| 160 | 184 | 15 | 16 | C1G024N3571 |
| 170 | 190 | 14 | 15 | C1H007N3571 |
| 170 | 194 | 15 | 16 | C1H010N3571 |
| 180 | 200 | 14 | 15 | C1J005N3571 |
| 190 | 210 | 14 | 15 | C1K010N3571 |
| 200 | 220 | 14 | 15 | C1L015N3571 |
| 200 | 230 | 15 | 16 | C1L025N3571 |
| 210 | 230 | 14 | 15 | C1L040N3571 |
| 225 | 250 | 14 | 15 | C1M020N3571 |
| 235 | 265 | 21 | 22 | C1M030N3571 |
| 240 | 270 | 20 | 21 | C1N035N3571 |
| 260 | 280 | 14 | 15 | C1O007N3571 |
| 260 | 290 | 21 | 22 | C1O010N3571 |
| 280 | 310 | 20 | 21 | C1O031N3571 |
| 320 | 350 | 20 | 21 | C1Q050N3571 |
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