RS119

  • Spring supported asymmetrical PTFE rod seal.

  • For low friction and good dry running properties.

  • Excellent chemical and thermal resistance.

  • Application in the food, pharmaceutical and chemical industry.

Material and Application Parameters

²Pressure Values as a function of the gap dimension. The specified application parameters are generally valid values and must not be used simultaneously with the application. An order can be placed by specifying the profile type, material and specified housing design dimensions.
Sealing Element Spring Temperature (°C) Max. Sliding Speed (m/s) Maximum Pressure²
PTFE virgin diet 1.4310 -200 - +260 15 200 bar (2900psi)
PTFE glass 1.4310 -200 - +260 15 400 bar (5800psi)
PTFE bronze 1.4310 -200 - +20 15 400 bar (5800psi)
PTFE carbon 1.4310 -200 - +260 15 400 bar (5800psi)
UHMWPE 1.4310 -200 - +80 15 200 bar (2900psi)

Standard Dimensions

¹The specified extrusion gap is valid up to 70°C, higher temperatures requre lower values.
Maximum radial extrusion gap s¹ (mm)
Ød f8 (mm) ØD H10 (mm) L +0.2mm H (mm) C (mm) 20 bar 100 bar 200 bar 300 bar 400 bar
>5 - ≤18 d + 4.50 6.30 3.30 2.00 0.25 0.12 0.10 0.08 0.07
>18 - ≤50 d + 7.20 4.80 4.40 3.00 0.35 0.17 0.12 0.10 0.08
>50 - ≤120 d + 9.40 7.10 6.60 4.00 0.45 0.22 0.17 0.12 0.10
>120 - ≤630 d + 12.20 9.50 8.80 5.00 0.60 0.31 0.25 0.15 0.12
>630 - ≤1600 d + 19 15.00 14.00 6.00 0.87 0.48 0.38 0.28 0.20
Rod Seal, Single Acting, Hydraulics

The dimensions s + c are dependent on the respective seal type.

Brightened symbols: seal only for limited use.

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Design Application

Surface Finish

Roughness Rtmax(µm) Ra(µm) Material Portion
Sliding Surface ≤ 2.5 0.05 - 0.3 Ratio contact area: 50 - 95% at a cutting depth of 0.5 x RZ starting from cref = 0%
Groove Base ≤ 6.3 ≤ 1.6
Groove Flanks ≤ 15 ≤ 3