O Ring For 24/40 Joint (Green Washer)

The O Ring for 24/40 Joint (Green Washer) is a type of sealing ring specifically designed to be used with 24/40 ground glass joints, commonly found in laboratory glassware and equipment. Here’s a detailed breakdown:

Key Features:

1. Compatibility:

   • The O-ring is designed to fit the 24/40 ground glass joint, which refers to the specific size and dimensions of the glass joint. A 24/40 joint has an outer diameter of 24mm and a joint length of 40mm. This is one of the most commonly used sizes for laboratory glassware, such as flasks, condensers, and other apparatus that require secure, leak-proof connections.

2. Material:

   • The O-ring is made from silicone rubber, although other materials such as PTFE or Viton can also be used, depending on the chemical and temperature resistance needed for the application.
   • Green color: The green color is a common visual indicator, especially for O-rings made of silicone rubber, and can help differentiate these from other types of seals used in various laboratory applications.

3. Sealing Function:

   • The O-ring provides a tight seal between two ground glass joints, preventing the leakage of liquids, gases, or vapors. This is particularly important in vacuum systems, distillation setups, or other laboratory experiments where maintaining pressure or preventing contamination is crucial.
   • It ensures an airtight and secure connection between two glassware pieces, improving the overall safety and efficiency of the experimental setup.

4. Size and Fit:

   • Specifically designed for a 24/40 joint, the O-ring fits snugly into the groove of the ground glass joint, ensuring a secure, leak-proof seal. The O-ring can be placed in the groove on the male side of the joint, and when the joint is mated, the O-ring is compressed to create the seal.

5. Temperature and Chemical Resistance:

   • Depending on the material, silicone O-rings typically have good resistance to a range of chemicals and can withstand moderate temperature variations, making them suitable for many laboratory applications. However, the exact temperature and chemical tolerance can vary depending on the material used for the O-ring.

6. Durability:

   • O-rings, when properly maintained, are durable and offer a long-lasting sealing solution. They are typically resistant to wear, aging, and cracking under normal laboratory conditions, but care should be taken not to over-tighten the joints, as that could deform the O-ring and compromise its sealing ability.

Applications:

• Laboratory Distillation: Used to seal connections between pieces of glassware in distillation setups, preventing the escape of vapors.
• Vacuum Systems: Ensures that vacuum connections between glass components are airtight, helping maintain the desired pressure.
• Titration and Other Chemical Reactions: Used in setups where precise, leak-free connections are essential for accurate results.
• Synthesis and Extraction: For secure seals between components during chemical reactions or extractions.

Conclusion:

The O Ring for 24/40 Joint (Green Washer) is a small but critical component for ensuring safe and effective connections in laboratory glassware. It provides an airtight seal for 24/40 ground glass joints, allowing experiments and processes to proceed without leaks, contamination, or loss of pressure.