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PISTON SEAL PSU

1.375" x 1.750" x 0.500" (34.93 mm x 44.45 mm x 12.70 mm)
H&D SKU: PSU-1.75X1.37X.500
Product Availability : Only 1 Left
$17.16

DESCRIPTION

The PSU piston Uniring is a dual durometer, one piece double-acting piston seal. It consists of a dynamic sealing and wear lamina bonded to a static sealing and activation lamina. The material used for the static lamina has high resilience and extremely low compression set. It functions as a seal energizing spring element and assures positive sealing performance throughout a broad pressure range. The dynamic sealing element is made of a harder material, selected for it’s high abrasion resistant qualities. 

The PSU can readily be substituted in existing grooves to replace other types of double-acting seals, such as PTFE piston rings and T-seals. 

 

SEAL INFORMATION

Material Type (Primary Seal): POLYURETHANE 

Material Type (Energizer): 57A POLYURETHANE 

Durometer (Shore D): 60 

Temperature Range (F): -40 TO 195 

Extrusion Gap at Various Pressures (in):

  • 1,500 PSI: 0.040
  • 3,000 PSI: 0.016
  • 5,000 PSI: 0.008

Max Speed (ft/sec): 3.0 

Mating Surface Roughness - Ra (µin) - DYNAMIC: 4<>16 

Mating Surface Roughness - Ra (µin) - STATIC: 32 MAX 

Part Number Definition (Inch): PSU-(OD)X(ID)X(HT) 

Products specifications
ID (Inch) 1.375
OD (Inch) 1.750
Height (Inch) 0.500
ID (Metric) 34.93
OD (Metric) 44.45
Height (Metric) 12.70