Braided graphite packing T4337

PTFEchemical-resistanthigh resistance

Product overview

• ULMAN T4337 is a high-performance gland packing manufactured from expanded PTFE yarn with a high content of permanently embedded graphite, ensuring clean handling.
• The PTFE/graphite structure provides high thermal conductivity to dissipate frictional heat from high-speed pump shafts and helps prevent glazing of running surfaces.
• High flexibility reduces shaft and spindle wear; the packing remains dimensionally stable with minimal shrinkage and retains volume under varying operating conditions. Excellent self-lubricating properties lower energy consumption and wear.

Application

• Suitable across multiple industries and particularly effective in dynamic applications such as pumps, mixers, valves and slide gates.
• Resistant to a wide range of aggressive media including strong acids and alkalis, solvents, gases and ammonia, oils, greases, hot and cold water, condensate and steam (resistant to steam up to approx. +280 °C).
• Well suited to chemical and pharmaceutical industries, power plants, refineries and the food industry. Demonstrates particular strengths in high-speed pumps and gas industry applications.

Fields of application

• static
• dynamic
• single acting
• double acting
• linear
• rotating
• oscillating

Main use
Used universally across many industries and especially effective in dynamic sealing applications such as pumps, mixers, valves and slide gates.

Materials
PTFE (expanded PTFE yarn with permanently embedded graphite)

Technical values

• Materials: PTFE/Graphite
• Pressure: 32 dyn. / 250 stat.
• Temperature (service): -100 °C / +250 °C (steam resistance up to approx. +280 °C)
• Speed: up to 28 m/s
• pH range: 0 - 14

Delivery forms

• 4–25 mm square, other dimensions available on request
• Specific density: 1.4 g/cm³ ± 10%
• Packaging weights: up to 08 mm – 1 kg; up to 12 mm – 2 kg; up to 16 mm – 4 kg; up to 25 mm – 5 kg

Downloads
General datasheet (PDF) available.

Characteristics / technical specifications

• Product name: ULMAN T4337
• Model: T4337
• Composition: Expanded PTFE yarn with permanently embedded graphite
• Thermal resistance (service): up to approx. +250 °C (steam noted up to approx. +280 °C)
• Chemical resistance: Resistant to strong acids, alkalis, solvents, gases (including ammonia), oils, greases, water, condensate and steam
• Mechanical: High flexibility, low shrinkage, dimensional stability, self-lubricating
• Pressure rating: 32 dyn. / 250 stat.
• Permitted speed: up to 28 m/s
• pH range: 0 - 14
• Specific density: 1.4 g/cm³ ± 10%
• Available cross-sections/packing weights: 4–25 mm square; packaging weights as above