In pop-up sink drain wastes, rubber gaskets and seals play a crucial role in preventing water leakage and ensuring a watertight seal. These components are typically made from synthetic rubber materials, such as silicone or EPDM (Ethylene Propylene Diene Monomer). The main functions of rubber gaskets and seals are:

Preventing Water Leakage: Rubber gaskets and seals are strategically placed to create a tight seal between different parts of the drain waste assembly, ensuring that water flows down the drain without any leaks.

Resisting Chemicals and Heat: Synthetic rubber materials are resistant to the chemicals commonly found in sinks and can withstand exposure to hot water without deteriorating.

Flexibility: Rubber gaskets and seals are flexible, allowing them to adapt to the contours and movements of the pop-up drain components, maintaining their seal integrity over time.

Stainless Steel: 

Inside the pop-up sink drain waste, you'll find several stainless steel components that are essential for the functioning of the pop-up assembly. Stainless steel is known for its strength and resistance to corrosion, making it an ideal material for these moving parts. The primary stainless steel components include:

Pivot Rod: The pivot rod is a key element in the pop-up assembly, connecting the lift rod to the pop-up stopper. It allows for the up-and-down movement of the stopper. Stainless steel pivot rods are robust and ensure the pop-up mechanism works smoothly over an extended period.

Ball Joint: The ball joint is another stainless steel component that provides flexibility in the pop-up assembly. It allows the lift rod to move at various angles and ensures the stopper can be lifted and lowered with ease.