Parker Prädifa piston seals N1/N2

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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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