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Lip stuffing-box sealing ring USw (substitute 652)

  • Item 1: USw sealing ring (sealing part – material: thermoplastic polyurethane TPU, hardness 90±2 ShA)
  • Item 2: PPW anti-extrusion ring (material: polyacetal POM)
  • Item 3: O-ring (NBR)

Conditions of use​

Operating pressure [MPa] 16 25 50
Continuous exposure temperature [°C] 80 50
Smax. [mm] 1.0 0.5
  • Hydraulic medium:
    • mineral oils
    • oil-water emulsions HFA and HFB classes (up to 50 °C)
  • Maximum operating speed [m/s]:
    • continuous: 0.2
    • intermittent: 0.5

Ordering example​​​​​​​

  • USw Ring 240 × 260 × 14.5
    (D × d × W)

Comments

  1. Special versions of seals are available:
    • for continuous operation (in oil) at temperatures up to 100 °C.
    • with nominal dimensions other than those specified in the standard range.
 
 
Type sizedxdxW Inside diameterd Outside diameterD Groove widthL Assembly chamfera
180x195x14.518019516.012.5
210x230x14.521023016.012.5
230x250x14.523025016.012.5
240x260x14.524026016.012.5
260x280x16.426028018.012.5
285x305x16.428530518.012.5
305x325x16.430532518.012.5
355x380x16.435538018.014.0