SPG

SPG-piston seal

SPG is a compact double acting piston seal for medium to heavy duty applications. The reinforced, heat stabilized, thermoplastic sealing face with step-cut joint allows the seal to pass over ports, making it an ideal choice for double acting telescopic cylinders.

It comprises a bronze filled PTFE face ring, which is pre-loaded by a square section NBR ring. The cap ring is precision machined from a compression moulded billet. Compression moulding of the material offers consistently superior physical properties as compared to automatic moulded products. The machined face ring has chamfered corners for easy installation and a surface finish free from the “orange peel” effect associated with automatic moulded products. As only the PTFE face ring is in contact with the sliding surface, friction is very low and stick slip movement is eliminated. The housing width allows the designer to use a narrow width piston, but it is recommended that an adequate bearing be mounted on either side of the seal as shown.

Materials
Standard materials are bronze / PTFE with a NBR square section energizer.

SPG piston seal

MaterialPoer-transmission fluidTemperatureSpeedPressureMax. Gap F
PTFE+bronzeMineral Oil (NBR)-30 – +110≦ 15m/s160 barF ≦ 0.6mm
Mineral Oil (FKM)-30 – +200250 barF ≦ 0.4mm
400 barF ≦ 0.2mm
Chamfers & Rad(mm)ToleranceSurface Finishing
μm Raμm Rt
S ≦3.755.57.510.512.515ØD1H90.1-0.4≦ 4
C ≧2357.588.5Ød1h9≦ 1.6≦ 10
r1 ≧0.40.81.21.61.62.0L+0.2 – 0≦ 3.2≦ 16

SPG PISTON SEAL LIST

ITEM NO.SIZE
SPGdDhHC
3020.5304.34.52
31.52231.54.34.53.5
3222.5324.34.53.5
3525.5354.34.53.5
35.52635.54.34.53.5
4030404.34.53.5
4535454.34.53.5
5040504.34.54
5545554.34.54
5646564.34.54
6050604.34.54
6348637.37.54
6550657.37.54
6954697.37.54
7055707.37.55
7156717.37.55
7560757.37.55
8065807.37.55
8570857.37.55
9075907.37.55
9580957.37.55
100851007.37.55
105901057.37.55
108921087.37.55
110941107.37.55
112961127.37.56.5
1201041207.37.56.5
1251091257.37.56.5
1301141307.37.56.5
1351191357.37.56.5
1401241407.37.56.5
1451291457.37.56.5
1501341507.37.56.5
1551391557.37.56.5
1601441607.37.56.5
17014817010.8116.5
18015818010.8116.5
19016819010.8116.5
20017820010.8116.5
20418220410.8116.5
21018821010.8116.5
21519321510.8116.5
22019822010.8116.5
22420222410.8116.5
22520322510.8116.5
ITEM NO.SIZE
SPGdDhHC
23020823010.8116.5
24021824010.8116.5
25022825010.8116.5
26023626011.7127.5
27024627011.7127.5
28025628011.7127.5
29026629011.7127.5
30027630011.7127.5
31028631011.7127.5
32029632011.7127.5
3303083309.751010
36033636011.71210
40037640011.71210
48545548514.81510
50047050014.81510
55051555017.217.510
60057060014.81510
65062065014.81515
72069072014.81515
80078580012.71315
90087090024.52515
930890930192015
93592093512.71315
95092595017.71815
1000960100019.72020
10601020106019.72020
11201080112019.72020
11501110115019.72020
11801130118019.72020
121011701210192020
12501210125019.72020
12601220126019.72020
14001350140019.72020
15001460150019.72020
165016001650242520

SPG PART NUMBERS:

5J7004
5J7004A
1U3998
1U3998A
8J6213
8J6213A
5J7010
5J7010A
6J1972
6J1972A
2443839
6J0793
6J0793A
5J7013A
5J8011
5J8011A
5J5402
5J5402A
5J7854
5J7854A
5J4986
5J4986A
5J4987
5J4987A
5J5020
5J5020A
5J7234A
5J4988A
9J4981A
5J4989
5J4989A
5J4990
5J4990A
5J4991
5J4991A
5J4997
5J4997A
5J4993
5J4993A
9J7117A
5J7016
5J7016A
5J5559A
6J9385A
5J7019
5J7019A
1214179
1674004
1449485
1980659
1403750
1617144
1617145
1754721
1200890
2107029
1463923
1931394
1463968
1617149
1934313
2107026
2332584
1445287
1931368
0963893
0967803
0961564
0861345
2344583
0961570
8C9193