Conical Seals for Threading Machine

Conical Seals for Threading Machine, Type Z

Did you know that the threading operation may cause the pipe end to deform so it’s not round thereafter? This is due to the thread-cutting tool exerting too much force on the pipe that tends to bend it. Our conical seal, made of filled PTFE compounds, is specially designed for fitting inside the pipe end during a threading operation. When pressurized, the ring would expand radially outward to maintain a tight seal and rigid support against the inside wall of the steel pipe.

Conical Seal Assembly Diagram

Related Specs
No. Type Nominal dia . Conical seal size
Order No.
Do do h H
1 Z 1.9" 48 35.5 20.5 23.5 27.5 Z215
2 Z 2 3/8" 60.3 40 20.5 23.1 27.5 Z216
3 Z 2 3/8" 60.3 42 21 28 32 Z201
4 Z 2 7/8" 73 52 27.5 27 31.4 Z217
5 Z 2 7/8" 73 55 27.5 28 32 Z229A
6 Z 2 7/8" 73 60 27 28 32 Z202
7 Z 3 1/2" 88.9 65 38 27 31.5 Z224
8 Z 4" 101.6 75 37 37.5 42 Z225
9 Z 4.5" 114.3 87 51 37 42.5 Z203
10 Z 5-1" 127 94 51 39 44.5 Z204
11 Z 5-2" 127 101.4 51 39 44.5 Z205
12 Z 5.5-1 " 139.7 109 66 38 43.5 Z206
13 Z 5.5-2" 139.7 117.6 66 38 43.5 Z207
14 Z 6 5/8 " 168.3 136 97 44 51 Z208
15 Z 7" 177.8 145 106 44 51 Z209
16 Z 7"B 177.8 152.5 94 44.5 50 Z210
17 Z 7 5/8" 193.7 158 119 44 51 Z211
18 Z 8 5/8" 219.1 187 147 44 51 Z212
19 Z 9 5/8" 244.5 210 170 44 51 Z213
20 Z 10 3/4" 273 236 190 47 54 Z221
21 Z 10 3/4" 273.1 240 200 48 55 Z214
22 Z 11 3/4" 298.5 260 217 47 54 Z222
23 Z 13 3/8" 339.7 307 260 47 54 Z223

Internal Expansion and Support Device for Conical Seal

While it may look like an awl, this so-called internal expansion and support device is actually used to push into the opening of the conical seal so that it expands the seal until the seal is held tightly against the inside wall of the steel pipe.

Operating Conditions
Operating media: water, emulsified liquid, hydraulic oil
Operating temperature: -20~+80°C

Related Specs
Internal expansion and support device, type I
No.
Type

Pipe dia .

Max. inner dia .

Min. inner dia .
Conical ring order No. Expansion device order No.
D d max d min
1 1.9" Φ48.26 Φ40.9 Φ38.1 Z215 ZG101
2 2 3/8" Φ60.32 Φ51.48 Φ43.24 Z216 ZG102
3 2 7/8" Φ73.02 Φ62 Φ55.74 Z217 ZG103
4 3 1/2“ Φ88.9 Φ77.92 Φ69.86 Z224 ZG104
5 4" Φ101.6 Φ90.12 Φ88.9 Z225 ZG105
6 Z 4 1/2" Φ114.3 Φ103.88 Φ97.18 Z203 ZG106
Internal expansion and support device, type II
No.
Type

Pipe dia .

Max.inner dia .

Min.inner dia .

Conical seal order No.

Expansion device order No.
D d max d min
1 5" Φ127 Φ115.82 Φ104.8 Z205 ZG201
2 5 1/2" -1 Φ139.7 Φ124.26 Φ114.3 Z206 ZG202
3 5 1/2" -2 Φ139.7 Φ127.3 Φ120.38 Z207 ZG203
4 6 5/8“ Φ168.28 Φ153.64 Φ144.16 Z208 ZG204
5 7" Φ177.8 Φ166.06 Φ150.36 Z209 ZG205
6 7 5/8" Φ193.68 Φ178.04 Φ161.92 Z211 ZG206
7 8 5/8" Φ219.08 Φ205.66 Φ190.78 Z212 ZG207
8 9 5/8" Φ244.48 Φ228.64 Φ213.54 Z213 ZG208
9 10 3/4" Φ273.05 Φ258.87 Φ242.83 Z214 ZG209
10 11 3/4" Φ298.45 Φ279.45 Φ271.33 Z222 ZG210
11 13 3/8" Φ339.7 Φ322.96 Φ313.6 Z223 ZG211