BuraTAL T4 9650/T4

BuraTAL T4 9650/T4

BuraTAL T4 9650/T4


BuraTAL T4 9650/T4 is a universal sealing set for valve stems, which is completely made out of high-grade impregnated non-woven material. Two rings on the atmospheric side are made of carbon fibre non-woven material impregnated with a special PTFE/graphite mixture. The rings on the product side are white and consist of aramid non-woven material with a PTFE–impregnation with high cross-sectional density.


  • Low gap extrusion
  • Minimized cold-flow and creep behavior
  • Very good performance under temperature cycling over a wide temperature range
  • Unique combination of cross sectional tightness, dimensional stability and low friction capabilities

Operating range

Pressure: p = max. 250 bar
for TA-Luft:
without Live-Loading System 30 bar
with Live-Loading System 63 bar
Sliding velocity: vg = 2 m/s
Temperature: t = -50 °C … +250 °C
Chemical resistance: pH = 1 … 14

Resistant to many chemicals (solvents, hydrocarbons, alkalis, acids), alcohols, water, oils, etc., except highly concentrated acids and alkalis, fluorine and concentrated fluorine-compounds.

Standards and approvals

  • Without live-loading up to 250 °C / 30 bar / 1,000 strokes (MPA Stuttgart)
  • In-house tested up to 40 bar


9650/T4B (with Live-Loading System)

Forms of supply

Customised sealing sets made from endless or cut precompressed rings with and without Live-Loading system

Product variants

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