The Parker Prädifa piston seal sets profile N1 / N2 is formed from a tissue groove ring (N1) and a support ring (N2). In the following dimensional list, there are all square and rectangular sizes which are not included in the standard NG series. The rings with a square cross-section are preferred for sealing flasks with open flasks
to provide installation space, while the rings with the rectangular profiles are mainly used on the piston rod. In this case, a rubber support ring should be used, which extends through the pre-tensioning force of the stuffing box is deformed and the lips of the U-ring in their pressing against the surfaces to be sealed. When used as a piston seal, backing rings made of plastic are also possible. Metal support rings are not part of our production program and can be created with a dimension list according to the drawing on page F45.
The Parker Praedifa piston sealing set profile N1 / N2 is made out of a fabric reinforced rubber “U’-cup (N 1) and a header ring (N2). All square and rectangular sizes which are not included in the standard series profile NG are to be found listed in the following tables. The rings with square cross-section are well suited
for the sealing of open grooves whereas rings with the rectangular profile are for piston rod seals. In these cases, a rubber header ring is used to preload the U-ring lips against the surface to be sealed. Header rings in plastic or metal may be used as a piston seal. Metal header rings are not covered in
our production program but can be produced according to the drawing and size list presented on page F45.
Materials:
U-ring: NBR-based rubber fabric Q5015 / Q5016.
Support ring: NBR elastomer (N3578) or Polyacetal (POM-W5001).
Please contact us for special operating conditions (specific pressure load, temperature, speed, etc.)
Application engineers who work on the material and design for your special application requirements.
Compounds:
“U’-ring: NBR-based fabric reinforced rubber Q5015/5016
Header ring: NBR elastomer (N3578) or
polyacetal (POM-W5001),
For special requirements (pressure, temperature, speed, etc.) please contact our Consultancy
Service, so that suitable materials and/or designs
can be recommended.
| cyl. | U-ring | Header ring | ||||
| D | d | H | b | Item number | o | item number |
| 14 | 8 | 4 | 2 | N1 0060 Q5018 | ||
| 18 | 6 | 9 | 5 | N1 0038 Q5018 | ||
| 18 | 8 | 8 | 3 | N1 0065 Q5018 | ||
| 9 | 5 | N1 0070 Q5018 | ||||
| 20 | 8 | 6 | 3 | N1 0075 Q5015 | 4,5 | N2 0080 N3578 |
| 20 | 12 | 6 | 3 | N1 1015 Q5018 | 4 | N2 1006 W5001* |
| 22 | 10 | 6 | 3 | N1 1003 05015 | 4,5 | N2 1003 N3578 |
| 24 | 12 | 6 | 3 | N1 1019 Q5015 | 4,5 | N2 1009 N3578 |
| 25 | 11 | 8 | 3,5 | N1 1010 Q5018 | ||
| 25 | 12 | 8 | 4 | N1 1012 Q5018 | ||
| 25 | 13 | 6 | 3 | N1 1025 Q5015 | 4,5 | N2 1016 W5001 |
| 25 | 15 | 5 | 2,5 | N1 1035 Q5015 | 5 | N2 1030 W5001* |
| 8 | 4 | N1 1040 Q5018 | ||||
| 25 | 16 | 5 | 2,5 | N1 1053 Q5018 | 4,5 | N2 1052 N3578 |
| 25 | 18 | 6 | 3 | N1 1075 Q5018 | 4,5 | N2 1080 W5001 |
| 26 | 14 | 6 | 3 | N1 1028 Q5015 | 4,5 | N2 1026 N3578 |
| 26 | 18 | 3,5 | N2 1071 W5001 | |||
| 27 | 15 | 6 | 3 | N1 1042 Q5015 | 4,5 | N2 1032 N3578 |
| 28 | 16 | 6 | 3 | N1 1055 Q5015 | 4,5 | N2 1055 N3578 |
| 28 | 18 | 6 | 3 | N1 1077 Q5018 | ||
| 28 | 20 | 4 | 2 | N1 2002 Q5018 | 3,3 | N2 2002 N3578 |
| 30 | 15 | 9 | 3,5 | N1 1045 Q5019 | ||
| 30 | 18 | 6 | 3 | N1 1078 Q5015 | 4,5 | N2 1085 N3578 |
| 30 | 20 | 8 | 3,5 | N1 2005 Q5018 | 5,8 | N2 2003 N3578 |
| 7 | N2 2005 N3578 | |||||
| 30 | 22 | 4 | 2 | N1 2024 Q5018 | 3 | N2 2024 N3578 |
| 6 | 3 | N1 2025 Q5018 | 4,5 | N2 2025 N3578 | ||
| 32 | 18 | 7 | 3,5 | N1 1080 Q5019 | ||
| 32 | 20 | 6 | 3 | N1 2008 Q5015 | 4,5 | N2 2011 W5001* |
| 32 | 22 | 5 | 2,5 | N1 2027 Q5018 | 4,5 | N2 2027 N3578 |
| 6 | 3 | N1 2028 Q5018 | ||||
| 32 | 24 | 6 | 3 | N1 2040 Q5018 | 4,5 | N2 2035 N3578 |
| 50 | 35 | 7,5 | 3,7 | N1 3070 Q5018 | 5,8 | N2 3060 W5001* |
| 8 | 3 | N1 3073 Q5018 | 7 | N2 3063 W5001 | ||
| 50 | 38 | 6 | 2,5 | N1 3085 Q5015 | 6,5 | N2 3080 N3578 |
| 50 | 40 | 5 | 2,2 | N1 4005 Q5015 | 3,8 | N2 4006 W5001* |
| 6 | 2,5 | N1 4008 Q5018 | 4.8 | N2 4009 N3578 | ||
| 50 | 42 | 6 | 3 | N1 4032 Q5018 | 4,5 | N2 4030 N3578 |
| 54 | 42 | 6 | 3 | N1 4034 Q5015 | 4.5 | N2 4032 N3578 |
| 55 | 30 | 12 | 6 | N1 3028 Q5019 | ||
| 55 | 35 | 10 | 5 | N1 3076 Q5016 | 7.5 | N2 3068 N3578 |
| 55 | 40 | 7,5 | 3,7 | N1 4013 Q5015 | 5.8 | N2 4014 N3578 |
| 12 | 6 | N1 4015 Q5018 | 8.5/ | 1 N2 4016 N3578 | ||
| 56 | 40 | 15 | 7,5 | N1 4017 Q5019 | 10 | N2 4018 N3578 |
| 56 | 41 | 7,5 | 3,7 | N1 4030 Q5015 | 5,8 | N2 4027 W5001 |
| 57 | 38 | 10 | 5 | N1 3090 Q5019 | 8 | N2 3085 N3578 |
| 57 | 42 | 7,5 | 3,7 | N1 4035 Q5015 | 5,8 | N2 4033 N3578 |
| 58 | 38 | 10. | 4 | N1 3093 Q5019 | 9,5 | N2 4002 N378 |
| 60 | 40 | 10 | 4 | N1 4022 Q5016 | ||
| 60 | 45 | 7,5 | 3,7 | N1 4045 Q5015 | 5,8 | N2 4045 W5001* |
| 60 | 46 | 7 | 3,1 | N1 4061 Q5015 | 7 | N2 4065 N3578 |
| 63 | 43 | 10 | 5 | N1 4037 Q5024 | 7 | N2 4035 N3578 |
| 7,5 | N2 4038 N3578 | |||||
| 63 | 48 | 7,5 | 3,5 | N1 4080 Q5015 | 6 | N2 4086 W5001* |
| 63 | 50 | 6,5 | 3 | N1 5005 Q5015 | 5,5 | N2 5003 W5001 |
| 63 | 55 | 6 | 3 | N1 5037 Q5018 | 5,5 | N2 5030 W5001* |
| 65 | 40 | 12,5 | 6,2 | N1 4029 Q5016 | 9,3 | N2 4025 N3578 |
| 65 | 45 | 10 | 4 | N1 4050 Q5016 | 8,5 | N2 4052 W5001* |
| 13 | 5 | N1 4053 Q5019 | 16 | N2 4057 N3578 | ||
| 65 | 49 | 8 | 3,5 | N1 4095 Q5016 | 6,5 | N2 4090 N3578 |
| 65 | 50 | 12 | 5 | N1 5009 Q5018 | 8,5 | N2 5004 N3578 |
| 9 | N2 5002 N3578 | |||||
| 70 | 50 | 10 | 5 | N1 5013 Q5019 | 7 | N2 5005 N3578 |
| 14 | 6 | N1 5016 Q5019 | 7,5 | N2 5010 W5001* | ||
| 70 | 50 | 15 | 7 | N1 5021 Q5019 | 10,5 | N2 5035N3578 |
| 70 | 55 | 7,5 | 3,5 | N1 5042 Q5015 | 6,5 | N2 5037N3578 |
| 10 | 5 | N1 5044 Q5015 | 7,5 | |||
| 12 | 5 | N1 5046 Q5019 | N2 5085 N3578 | |||
| 70 | 58 | 10 | 5 | N1 5080 Q5018 | 6 | N2 5040W5001* |
| 72 | 55 | 8,5 | 4,3 | N1 5051 Q5019 | 7,2 | N2 5050 N3578 |
| 75 | .55 | 10 | 4 | N15055 Q5016 | 7,5 | N2 5055N3578 |
| 8 | N2 5056 N3578 | |||||
| 8,5 | N2 5057N3578 | |||||
| 10,5 | N2 6035N3578 | |||||
| 75 | 63 | 10 | 4,5 | N1 6033 Q5018 | 8,5 | N2 5076N3578 |
| 76 | 56 | 10 | 5 | N1 5070 Q5016 | 7,5 | |
| 76 | 60 | 7,5 | 3,5 | N1 6005 Q5019 | N2 5080N3578 | |
| 76,2 | 57,1 | 7,5 | 3 | N1 5074 Q5019 | 6 | N2 5065N3578 |
| 80 | 55 | 12 | 6 | N1 5068 Q5019 | 9,5 | N2 6005N3578 |
| 80 | 60 | 10 | 5 | N1 6010 Q5019 | 6,5 | N2 6007W5001* |
| 16 | 6 | N1 6013 Q5019 | 7 | N2 6015W5001* | ||
| 7,5 | N2 6023N3578 | |||||
| 11,5 | N2 6025N3578 | |||||
| 80 | 60 | 12,5 | ||||
| 80 | 63 | 9 | 4 | N1 6037 Q5019 | ||
| 80 | 65 | 7,5 | 3 | N1 6050 Q5015 | N2 6045N3578 | |
| 12 | 5 | N1 6054 Q5018 | 6,5 | N2 6048N3578 | ||
| 8,5 | N2 6050N3578 | |||||
| 80 | 68 | 9 | 3 | N1 6085 Q5018 | 9 | N2 6080N3578 |
| 82 | 70 | 9 | 3 | N1 7005 Q5018 | 8 | N2 7010N3578 |
| 83 | 63 | 10 | 5 | N1 6039 Q5016 | 8 | |
| 85 | 65 | 10 | 4 | N1 6060 Q5016 | N2 6060N3578 | |
| 10 | 5 | N1 6063 Q5016 | 7,5 | N2 6065N3578 | ||
| 8 | N2 6057N3578 | |||||
| 85 | 70 | 11 | 5 | N1 7010 Q5018 | 10 | N2 7015N3578 |
| 88 | 70 | 14,5 | 6 | N1 7015 Q5019 | 8 | |
| 90 | 65 | 12 | 6 | N1 6070 Q5019 | ||
| 90 | 68 | 11 | 5,5 | N1 6089 Q5016 | N2 7025 N3578 | |
| 90 | 70 | 10 | 5 | N1 7020 Q5019 | 6,5 | N2 7030 W5001* |
| 13,5 | 5 | N1 7023 Q5019 | 7,5 | N2 7040 N3578 | ||
| 14 | 5,5 | N1 7025 Q5019 | 11 | N2 7065 N3578 | ||
| 90 | 75 | 7,5 | 3,7 | N1 7045 Q5015 | 5,8 | |
| 92 | 67 | 18,8 | 6,5 | N1 6076 Q5019 | 17 | N2 7070 N3578 |
| 95 | 75 | 10 | 5 | N1 7050 Q5016 | 7,5 | |
| 16 | 5 | N1 7055 Q5019 | N2 8010 N3578 | |||
| 100 | 80 | 10 | 5 | N1 8015 Q5019 | 7 | N2 8015 W5001* |
| 14 | 4,5 | N1 8010 Q5016 | 7,5 | N2 8020 N3578 | ||
| 22 | 9 | N1 8020 Q5019 | 8 | N2 8025 N3578 | ||
| 9 | N2 8030 N3578 | |||||
| 11,5 | N2 8040 N3578 | |||||
| 14 | N2 8045 N3578 | |||||
| 16 | N2 8055 N3578 | |||||
| 100 | 85 | 7,5 | 3,5 | N1 8050 Q5015 | 6,5 | N2 8060 N3578 |
| 11,3 | 3,5 | N1 8055 Q5018 | 9 | N2 8066 W5001* | ||
| 100 | 85 | 12 | 5 | N1 8060 Q5018 | 9,5 | |
| 102 | 82 | 10 | 5 | N1 8040 Q5016 | ||
| 105 | 75 | 15 | 7,5 | N1 7063 Q5016 | ||
| 105 | 80 | 15 | 6 | N1 8025 Q5019 | N2 8070 N3578 | |
| 105 | 85 | 10 | 5 | N1 8068 Q5019 | 7,5 | |
| 12 | 5 | N1 8067 Q5019 | N2 9010 N3578 | |||
| 110 | 90 | 10 | 4,5 | N1 9010 Q5016 | 8 | N2 9011 N3578 |
| 9 | ||||||
| 112 | 92 | 10 | 5 | N1 9025 Q5016 | N2 A010 N3578 | |
| 114 | 0 | 16,5 | 4 | N1 A005 Q5018 | 15 | |
| 115 | 90 | 18,8 | 6,5 | N1 9015 Q5019 | N2 9030 N3578 | |
| 115 | 95 | 10 | 3 | N1 9045 Q5016 | 7,5 | N2 9040 N3578 |
| 10 | 5 | N1 9050 Q5016 | 9,5 | N2 A016 N3578 | ||
| 13,5 | 6,5 | N1 9055 Q5019 | 8,5 | N2 A020 N3578 | ||
| 115 | 100 | 10,5 | 3,5 | N1 A010 Q5018 | 9,5 | N2 9060 N3578 |
| 120 | 95 | 12,5 | 6,2 | N1 9065 Q5019 | 9,3 | N2 A024 N3578 |
| 120 | 100 | 10 | 5 | N1 A015 Q5016 | 7,5 | N2 A025 N3578 |
| 15 | 5 | N1 A020 Q5019 | 8 | N2 A026 N3578 | ||
| 9 | ||||||
| 120 | 105 | 12 | 5 | N1 A070 Q5018 | N2 A035 W5001* | |
| 125 | 100 | 12 | 5 | N1- A025 Q5019 | 9,3 | N2 A040 N3578 |
| 12,5 | 6,2 | N1 A030 Q5016 | 11,5 | |||
| 15 | 6 | Ni A035 Q5019 | N2 A055 N3578 | |||
| 125 | 105 | 10 | 5 | N1 A078 Q5016 | 7 | N2 A056 W5001 |
| 15 | 5 | N1 A081 Q5019 | 7,5 | N2 A060 W5001 | ||
| 14,5 | N2 6010 N3578 | |||||
| 125 | 110 | 10,5 | 3,5 | Ni B005 Q5018 | 9,5 | |
| 127 | 102 | 12,5 | 6,2 | N1 A062 Q5012 | N2 B020 N3578 | |
| 130 | 110 | 10 | 5 | N1 B010 Q5012 | 8 | N2 6030 N3578 |
| 132 | 112 | 10 | 5 | N1 B025 Q5016 | 7,5 | |
| 135 | 105 | 15 | 7,5 | N1 A090 Q5016 | ||
| 135 | 110 | 20 | 8 | N1 B015 Q5019 | N2 B045 N3578 | |
| 140 | 115 | 12 | 6 | N1 B036 Q5019 | 9,3 | |
| 12,5 | 6,2 | N1 B040 Q5012 | N2 C010 N3578 | |||
| 140 | 120 | 10 | 5 | N1 C005 Q5016 | 8 | N2 C015 N3578 |
| 14 | 4,5 | N1 C010 Q5019 | 9 | N2 CO20 N3578 | ||
| 11,5 | N2 CO25 N3578 | |||||
| 13 | ||||||
| 145 | 120 | 18,8 | 5,5 | N1 C015 Q5019 | ||
| 145 | 125 | 13 | 5,5 | N1 C040 Q5019 | ||
| 14 | 5,5 | N1 C045 Q5019 | N2 C043 N3578 | |||
| 147 | 125 | 22 | 5 | N1 C050 Q5019 | 27 | N2 C034 N3578 |
| 150 | 120 | 15 | 7,5 | N1 CO23 Q5016 | 11,5 | N2 C045 N3578 |
| 150 | 125 | 12,5 | 6,2 | N1 C055 Q5016 | 9,3 | |
| 150 | 128 | 22 | 5 | N1 C080 Q5019 | ||
| 150 | 130 | 15 | 6,5 | Ni D005 Q5019 | ||
| 154 | 130 | 15 | 6,5 | N1 D010 Q5019 | ||
| 158 | 138 | 7,5 | N2 D080 N3578 | |||
| 160 | 130 | 15 | 7,5 | N1 D015 Q5016 | 9,5 | N2 D010 N3578 |
| 11,5 | N2 D015 W5001* | |||||
| 160 | 135 | 18,8 | 6,5 | N1 D040 Q5019 | 13,5 | N2 D035 N3578 |
| 160 | 140 | 14 | 4,5 | N1 E005 Q5019 | 12,5 | N2 E010 N3578 |
| 163 | 140 | 20 | 6 | N1 E010 Q5019 | ||
| 165 | 135 | 15 | 7,5 | N1 D042 Q5016 | 11,5 | N2 D046 N3578 |
| 25 | 10 | N1 D045 Q5019 | ||||
| 165 | 145 | 15 | 7 | N1 E040 Q5019 | 12 | N2 E035 N3578 |
| 170 | 140 | 15 | 7,5 | N1 E018 Q5016 | 11,5 | N2 E019 N3578 |
| 20 | 7,5 | N1 E025 Q5019 | 15 | N2 E020 N3578 | ||
| 170 | 145 | 18,8 | 6,5 | N1 E045 Q5019 | ||
| 175 | 145 | 15 | 7 | N1 E050 Q5016 | 12 | N2 E045 N3578 |
| 180 | 150 | 15 | 7 | N1 F010 Q5016 | 12 | N2 F010 N3578 |
| 180 | 160 | 14 | 4,5 | N1 G005 Q5019 | 12,5 | N2 G010 N3578 |
| 15 | 4,5 | N1 G010 Q5019 | 14,5 | N2 0015 N3578 | ||
| 185 | 155 | 15 | 7,5 | N1 F045 Q5016 | 10,5 | N2 F035 N3578 |
| 190 | 160 | 15 | 7,5 | N1 G016 Q5016 | 10,5 | N2 G020 N3578 |
| 24 | 7 | N1 0020 Q5019 | 11,5 | N2 G022 N3578 | ||
| 197 | 175 | 22 | 5 | N1 H035 Q5019 | ||
| 200 | 170 | 15 | 7,5 | N1 H010 Q5016 | 11,5 | N2 H015 W5001″ |
| 200 | 180 | 10 | 5 | N1 J008 Q5019 | 7,5 | N2 J005 N3578 |
| 14 | 4,5 | N1 J010 Q5019 | 12,5 | N2 J010 N3578 | ||
| 20 | 5 | N1 J015 Q5019 | 22 | N2 J015 N3578 | ||
| 202 | 170 | 15 | 7,5 | N1 H015 Q5019 | ||
| 202 | 185 | 20 | 5 | N1 J040 Q5019 | 21 | N2 J035 N3578 |
| 210 | 190 | 15 | 4,5 | N1 K010 Q5019 | ||
| 215 | 190 | 12,5 | 6,2 | N1 K013 Q5016 | ||
| 220 | 190 | 15 | 7,5 | N1 K015 Q5016 | 11,5 | N2 K010 N3578 |
| 20 | 8 | N1 K020 Q5019 | 15 | N2 K015 N3578 | ||
| 220 | 190 | |||||
| 220 | 195 | 18,8 | 6,5 | N1 K045 Q5019 | ||
| 220 | 200 | 14 | 4,5 | Ni L010 Q5019 | ||
| 15 | 7 | N1 L015 Q5019 | ||||
| 225 | 185 | 30 | 7 | N1 J075 Q5019 | ||
| 225 | 195 | 15 | 7,5 | N1 K048 Q5019 | 11,5 | N2 K038 N3578 |
| 225 | 205 | 12 | 6 | N1 L028 Q5016 | 9,5 | N2 L014 N3578 |
| 230 | 200 | 15 | 7,5 | N1 L025 Q5016 | ||
| 230 | 210 | 20 | 5 | N1 1050 Q5019 | 22 | N2 L020 N3578 |
| 233 | 211 | 22 | 5 | N1 L070 Q5019 | 27 | N2 L035 N3578 |
| 235 | 205 | 15 | 7 | N1 L030 Q5019 | 12 | N2 L015 N3578 |
| 240 | 210 | 15 | 7 | N1 L060 Q5016 | 12 | N2 L028 N3578 |
| 250 | 220 | 15 | 7,5 | N1 M008 Q5016 | 11,5 | N2 M007 N3578 |
| 20 | 8 | N1 M010 Q5019 | 17,5 | N2 M010 N3578 | ||
| 250 | 230 | 15 | 5 | N1 M040 Q5019 | 12,5 | N2 M050 N3578 |
| 255 | 235 | 20 | 5 | N1 M065 Q5019 | 22 | N2 M055 N3578 |
| 260 | 230 | 15 | 7,5 | N1 M050 Q5016 | 10,5 | N2 M052 N3578 |
| 11,5 | N2 M051 N3578 | |||||
| 260 | 238 | 22 | 5 | N1 M080 Q5019 | 27 | N2 M085 N3578 |
| 275 | 245 | 15 | 7,5 | N1 N020 Q5016 | 11,5 | N2 N020 N3578 |
| 280 | 250 | 15 | 7,5 | N1 N035 Q5016 | 11,5 | N2 N040 N3578 |
| 25 | 10 | N1 N045 Q5019 | 17,5 | N2 N045 N3578 | ||
| 300 | 270 | 15 | 7,5 | N1 0030 Q5016 | 11,5 | N2 0030 N3578 |
| 320 | 280 | 20 | 10 | N1 P005 Q5016 | ||
| 330 | 310 | 22 | N2 Q015 N3578 | |||
| 355 | 310 | 22,5 | 11,2 | N1 Q015 Q5016 | ||
| 382 | 360 | 22 | 5 | N1 0070 Q5016 | ||
| 400 | 360 | 20 | 10 | N1 Q071 Q5016 | ||
| 432 | 410 | 22 | 5 | N1 R015 Q5016 | 27 | N2 R020 N3578 |
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