DSM is a five piece double acting compact seal which consists of one multiple lipped elastomeric nitrile rubber sealing element , two polyester elastomer back-up rings on both sides to prevent extrusion into the sealing gap and two special profiled thermoplastic guide rings to absorb transverse forces.
Heavy duty cylinders , excavators , cranes , marine hydraulics and loading platforms.
DSM compact seal must be used in open housing due to the non split form of the back-up ring produced from TPE material. If it is necessary to have a closed groove , back-up rings should be cut with 45° angle in a way not to have any gap and installed afterwards. On this case after the assembly onto the piston the cut on the back-up ring should be checked carefully. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.
NOTES: For special applications that require high temperatures , DSM piston seal is manufactured in FPM and PTFE material.
|MATERIAL: TPE 5501 / NBR 80 SH / POM|
|MEDIA||Mineral oils(DIN 51524)||HFA and HFB||HFC|
|TEMPERATURE||-30°C +105°C||+5°C +60°C||-30°C +60°C|
|PRESSURE||≤700 Bar||≤700 Bar||≤700 Bar|
|SPEED||≤0.5 m/sn||≤0.5 m/sn||≤0.5 m/sn|
Note:The above data are maximum values and cannot be used at the same time.
|Sliding Surface ØD||≤0.4 μm||≤4.0 μm|
|Groove Base Ød||≤1.6 μm||≤6.3 μm|
|Groove Flanks B||≤3.2 μm||≤16 μm|
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 10.00