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Braided PTFE packing T4905
aramid fiberhigh resistancechemical-resistant

Braided PTFE packing - T4905 - ULMAN Dichtungstechnik GmbH - aramid fiber / high resistance / chemical-resistant
Braided PTFE packing - T4905 - ULMAN Dichtungstechnik GmbH - aramid fiber / high resistance / chemical-resistant
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Characteristics

Material
PTFE, aramid fiber
Other characteristics
high resistance, chemical-resistant
Applications
for wastewater treatment, for valves, for the chemical industry, for the food industry, for mixers, for petrochemical applications, for pump
Operating temperature

Max.: 280 °C
(536 °F)

Min.: -100 °C
(-148 °F)

Description

ULMAN T4905
ULMAN T4905 - The base material of this packing, aramid staple fibre, is a synthetic fibre with very high strength. The fibre structure, combined with a high degree of impregnation with PTFE dispersion, makes the packing particularly suitable for abrasive environments. Although the packing absorbs abrasive particles, they cannot damage its structure or impair its performance. It also provides high resistance to cutting and wear.

Application
ULMAN T4905 is used for sealing pumps, mixers, valves, sliders and refiners. It exhibits minimal wear even under very high pressure and covers a wide range of applications. The packing is suitable for sealing in numerous chemically aggressive media as well as in water and steam up to 280 °C. Typical sectors include chemical, pharmaceutical, oil refining and food industries, chemical departments of power plants, and metallurgy. It is also frequently used for sealing pumps handling wastewater containing abrasive particles.

Fields of application
  • static
  • dynamic
  • single acting
  • double acting
  • linear
  • rotating
  • oscillating


Main use
Sealing pumps, mixers, valves, sliders and refiners. Shows minimal wear even under very high pressure and covers a broad range of applications.

Materials
Aramid staple fibre; PTFE impregnation and lubricant.

Technical values
  • Materials: Aramid staple fibre
  • Pressure: 20 dyn. / 150 stat.
  • Temperature: -100 °C / +280 °C
  • Speed: 15 m/s
  • pH value: 2 - 12


Delivery Forms
4–25 mm square; other dimensions available on request. Specific density: 1.5 g/cm³ ± 10%. Typical pack weights by thickness: ≤8 mm – 1 kg; ≤12 mm – 2 kg; ≤16 mm – 4 kg; ≤25 mm – 5 kg.

Characteristics / Technical specifications
  • Model: T4905
  • Base material: Aramid staple fibre
  • Impregnation: PTFE dispersion
  • Temperature range: -100 °C to +280 °C
  • Pressure rating: 20 dyn. / 150 stat.
  • Maximum speed: 15 m/s
  • pH range: 2 - 12
  • Delivery form: 4–25 mm square (other dimensions on request)
  • Specific density: 1.5 g/cm³ ± 10%
  • Typical pack weights by thickness: ≤8 mm: 1 kg; ≤12 mm: 2 kg; ≤16 mm: 4 kg; ≤25 mm: 5 kg

Catalogs

No catalogs are available for this product.

See all of ULMAN Dichtungstechnik GmbH‘s catalogs

Exhibitions

Meet this supplier at the following exhibition(s):

Motek Messe Stuttgart
Motek Messe Stuttgart

6-08 Oct 2026 Stuttgart (Germany) Hall 4 - Stand 4420

  • More information

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    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.