PTFE Thermometer Casing - Dia 3 x L 250mm

This PTFE thermometer casing (3mm diameter, 250mm long) is a protective sleeve that shields thermometers or temperature probes from harsh chemicals and breakage. It's commonly used in labs to contain the glass and liquid if a thermometer breaks.

Key Features

• Size: 3mm outer diameter (O.D.) x 250mm long.
• Material: Quality polytetrafluoroethylene (PTFE), also known as Teflon.
• Chemical resistance: Resists almost all acids (including hydrofluoric and sulphuric), alkalis, organic solvents and oxidisers.
• Temperature range: PTFE works from -200°C to +260°C (-328°F to +500°F).

Benefits

• Safety: If a glass thermometer breaks inside the casing, the PTFE sleeve contains the glass and the liquid (such as mercury or spirit) for safe disposal.
• Non-stick: Chemical residues don't stick to it, so it's easy to clean.
• Insulation: PTFE is a good thermal and electrical insulator, protecting sensors in electrically active or highly conductive environments.
• Weather resistance: Doesn't absorb moisture and resists UV, so it suits long-term use in many environments.

Typical Applications

• Distillation and reactions: Protecting probes in boiling corrosive liquids during organic synthesis.
• Food and pharma: Used in hygienic settings because it's non-contaminating and FDA-compliant.
• Hazardous materials: Ideal with reactive chemicals that would attack glass or metal sensors.