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Rod-Piston seal K21 63x73x7,5 PU

Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
Rod-Piston seal K21 63x73x7,5 PU
  • Code: K21-063/8 PU
  • In Stock: 14 pcs.
Updated: 06.01.2026 21:41
Hydraulic seals dimension
Rod diameter d (mm) 63
Groove Diameter D (mm) 73
Seal width h (mm) 7,5
Details
Seal type K21
Material type PU
$3.83/pcs.
5 pcs. or more $3.19/pcs.
10 pcs. or more $2.77/pcs.
25 pcs. or more $2.45/pcs.
50 pcs. or more $2.14/pcs.
100 pcs. or more $1.71/pcs.

Description

The K21 63x73x7.5 PU seal is a symmetrical U-cup used in hydraulic applications.
It can function as both a rod seal and a piston seal.
It is also commonly referred to as a U-cup seal.
Made of polyurethane PU 9201, it provides wear resistance and dimensional stability.

Technical details:

  • Inside diameter (d): 63 mm

  • Outside diameter (D): 73 mm

  • Height (H): 7.5 mm

  • Inch size: d x D x H = 63x73x7.5 mm ≈ 2.48”x2.87”x0.30”

  • Material: Polyurethane (PU 9201)

  • Seal type: symmetrical U-ring

  • Application: rod or piston sealing