Piston Seal Assemblies – Double Acting
Description
Double-acting piston seals have a symmetrical profile (cross section) and identical sealing functions in both directions. Typically, double-acting piston seals consist of a slide ring and an energizer. The deformation of the elastomeric energizer when installed provides adequate force to keep the slide ring in dynamic sealing contact with the cylinder bore, while sealing statically against the seal housing groove.
A double-acting cylinder typically has the same fluid on both sides of the piston. Therefore, a relatively thick lubrication film can be permitted between the piston seal and the cylinder bore to minimize friction and wear. The transportation of fluid occurring during dynamic operation is, however, small and insignificant in most applications.
John Deere® / New Holland Unitized Pistons
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
PTFE | -40° - +275° F | 0 - 5,000 PSI |
3 FT/ | JDPA |
Pneumatic DA Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
70A NBR | -20° F, +220° F | 0 - 175 PSI |
3 FT/ | PSM/P2 |
Pneumatic DA Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
70A NBR | -20° - +220° F | 0 - 175 PSI |
3 FT/ | PSM/ PSD |
Hunger® Hydraulic Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Urethane BRZ-PTFE |
-31° - +212° F | 0 - 6,500 PSI |
3 FT/ | SM/ HHPS |
Hunger® Hydraulic Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
BRZ-PTFE Urethane |
-31° - +212° F | 0 - 3,600 PSI |
3 FT/ | SM/ HHPS |
Pneumatic DA Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
75A Nitrile | -22° - +220° F | 0 - 230 PSI |
3 FT/ | DAP |
Hydraulic DA Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
90A Nitrile | -22° - +220° F | 0 - 175 TO 0 - 870 PSI |
3 FT/ | DAPS |
Hydraulic DA Piston Seal
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
70A NBR | -22° - +220° F | 0 - 175 PSI |
3 FT/ | _ |
Two Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
PTFE Piston Seal Rubber Energizer |
-40° - +230° F | 0 - 5,000 PSI |
12 FT/ | PSM/ TFE |
Two Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Glass / PTFE Filled Polyester Piston Seal Rubber Expander |
-40 - +230° F | 0 - 5,000 PSI |
3 FT/ | PSM/PU 755 |
Two Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
97A Urethane Seal 70A Nitrile Expander |
-22° - +210° F | 0 - 5,800 PSI |
1.5 FT/ | PSM/PU HP |
Step Cut Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Nylon Seal with Nitrile Energizer |
-22° F - +230° F | 0 - 7250 PSI |
3 FT/ | PSM/2G N |
PISTON SEAL ASSEMBLIES
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
40% Bronze fi lled PTFE, NBR Energizer, NBR Quad Ring |
-40° F - +220° F | 0 - 5000 PSI |
6 FT/ | PSM/AQ |
Piston Seal Anti- Extrusion Rings
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Nylon Back-Up Ring |
-65° - +220° F | 0 - 5,000 | - | PS/AER |
Four Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
PTFE Cap Nylon Back-Up Rubber Expander |
-40° - +220° F | 0 - 6,000 psi |
4.5 FT/ | DAM/ SPGT |
Caterpillar® Specifi c Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
_ | _ | _ | _ | PSM/ CAT8 |
Five Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Nitrile Piston Seal Polyacetal Anti- Extrusion Ring |
-22° - +212° F | 0 - 6,000 PSI |
1.5 FT/ | DAM/ DAS |
Three Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Fabric Reinforced Piston Seal Polyacetal Anti- Extrusion Ring |
-22° - +212° F | 0 - 5,000 PSI |
1.5 FT/ | DAM/ WDA |
Three Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Fabric Reinforced Piston Seal Polyacetal Anti- Extrusion Ring |
-22° - +212° F | 0 - 5,000 PSI |
1.5 FT/ | DAM/ DAL |
Three Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Fabric Reinforced Piston Seal Polyacetal Anti- Extrusion Ring |
-22° - +212° F` | 0 - 5,000 PSI |
1.5 FT/ | DAM/ DAL |
Three Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Nitrile Piston Seal Acetal Bearings |
-22° - +212° F | 0 - 3,000 PSI |
1.5 FT/ | DAM/DS DELTA |
Five Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Nitrile Plastic POM |
-22° - +230° F | 0 - 8,700 PSI |
1.5 FT/ | DAM/ DAS/HD |
Five Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Rubber / Fabric Piston Seal PTFE Back-Up Rings Nylon Bearings |
-22° - +190° F | 0 - 5,000 PSI |
1.5 FT/ | DAM/ RF/ PTFE |
Hunger® Five Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
Urethane Plastic POM |
-22° - +248° F | 0 - 8,700 PSI |
3 FT/ | DAM/ HFPPS |
Hunger® Multi-Piece Piston Seals
| Profile | Material | Temp | Pressure | Speed | Prod No |
|---|---|---|---|---|---|
|
BRZ-PTFE Urethane Filled POM |
-22° - +248° F | - | 3 FT/ | DAM/ HMPPS |
Application For These Machines
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Excavator -
Backhoe-Loader -
Loader -
Dozzer -
Bull Dozzer -
Crane -
Forklift