POLYPAC PHD/P

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POLYPAC PHD/P

Description

The POLYPAC PHD/P Seal is a high-pressure heavy-duty piston seal with excellent leakage control and superior extrusion and wear resistance

The POLYPAC PHD/P seal is a combination of a Zurcon polyurethane slipper seal energised by an elastomer profile ring and completed with two Back-up rings (POM). It is manufactured with a predefined interference fit, which together with the squeeze of the elastomer part ensures a good sealing effect even at low system pressure. At higher pressures the elastomer part is energised by the system pressure and consequently activates the slipper seal in the radial direction.

The Back-up rings prevent the slipper seal from extrusion and ensure a long service life even under harsh conditions.

POLYPAC PHD-P figuur 38

Advantages

– Simple groove design
– Excellent sealing effect
– Excellent wear resistance
– Increased clearance possible
– Long service life

Application Examples

The POLYPAC PHD/P Seal is the recommended sealing element for double acting pistons of hydraulic cylinders working in very harsh conditions such as:

  • Excavators
  • Heavy duty cylinders

Technical Data

Operating conditions

pressure:                        Up to 40 MPa
Peak pressure up to 60 MPa

Speed:                            Up to 0.5 m/s

Temperature:              -35qC to +110qC

Media:                           Mineral oil based hydraulic fluids

Clearance:                    The maximum permissible radial
clearance Smax is shown in Table, as a function of the operating
pressure and functional diameter

Important Note:

The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, pressure, temperature and gap value. Temperature range also dependent on medium

Materials

Standard Application:

For hydraulic components in mineral oils or medium with good lubricating performance.

Slipper Seal: Zurcon Z20 93 Shore A

Energiser: NBR 80 Shore A

Back-up rings: POM

Material code for the set: Z2053

POLYPAC PHD-P figuur 39

 

POLYPAC PHD/P

Bore Dia. Groove Dia. Groove Width Inlet Chamfer Radius Radial Clearance Part No Polypac Ref. No.
DN H9 d1 h9 L1 +0.2 C r1 S
50,0 36,0 9,0 5,0 0,3 For pressure up to 35 MPa
0.  0
For pressure from 35 MPa up to 60 MPa 0.30
PKP0P0500 PHD 5036P
55,0 41,0 9,0 5,0 0,3 PKP0P0550 PHD 5541P
60,0 46,0 9,0 5,0 0,3 PKP0P0600 PHD 6046P
63,0 48,0 11,0 5,0 0,5 PKP0P0630 PHD 6348P
65,0 50,0 11,0 5,0 0,5 PKP0P0650 PHD 6550P
70,0 55,0 11,0 5,0 0,5 PKP0P0700 PHD 7055P
75,0 60,0 11,0 5,0 0,5 PKP0P0750 PHD 7560P
80,0 65,0 11,0 5,0 0,5 PKP0P0800 PHD 8065P
85,0 70,0 11,0 5,0 0,5 PKP0P0850 PHD 8570P
90,0 75,0 11,0 5,0 0,5 PKP0P0900 PHD 9075P
95,0 80,0 12,5 5,0 0,5 PKP0P0950 PHD 9580P
100,0 85,0 12,5 5,0 0,5 PKP0P1000 PHD 10085P
105,0 90,0 12,5 5,0 0,5 PKP0P1050 PHD 10590P
110,0 95,0 12,5 5,0 0,5 PKP0P1100 PHD 11095P
115,0 100,0 12,5 5,0 0,5 PKP0P1150 PHD 115100P
120,0 105,0 12,5 5,0 0,5 PKP0P1200 PHD 120105P
125,0 102,0 16,0 6,5 0,6 PKP0P1250 PHD 125102P
130,0 107,0 16,0 6,5 0,6 PKP0P1300 PHD 130107P
135,0 112,0 16,0 6,5 0,6 For pressure up to 35 MPa
0.50
For pressure from 35 MPa up to 60 MPa 0.30
PKP0P1350 PHD 135112P
140,0 117,0 16,0 6,5 0,6 PKP0P1400 PHD 140117P
145,0 122,0 16,0 6,5 0,6 PKP0P1450 PHD 145122P
150,0 127,0 16,0 6,5 0,6 PKP0P1500 PHD 150127P
155,0 132,0 16,0 6,5 0,6 PKP0P1550 PHD 155132P
160,0 137,0 16,0 6,5 0,6 PKP0P1600 PHD 160137P
165,0 142,0 16,0 6,5 0,6 PKP0P1650 PHD 165142P
170,0 147,0 16,0 6,5 0,6 PKP0P1700 PHD 170147P
180,0 157,0 16,0 6,5 0,6 PKP0P1800 PHD 180157P

 

Ordering Example

POLYPAC PHD/P Seal, complete.

Bore diameter: DN = 80.0 mm

Part No. PKP0P0800 (from Table)

Material set-code: Z2053

Polypac Ref. No.: PHD 8065P

POLYPAC PHD-P Order

 

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