An oil seal, also referred to as a shaft seal or rotary shaft seal, is a specialized type of rubber seal used to prevent the leakage of lubricants, oils, or other fluids in rotating or reciprocating machinery. It is specifically designed to seal the gap between a rotating or moving shaft and the housing or component it passes through. They are essential components in machinery and equipment where the movement of a shaft requires lubrication or where the containment of fluids is crucial. They are commonly found in engines, gearboxes, pumps, motors, axles, and other mechanical systems.

Oil Seal referred to as a shaft seal or rotary shaft seal, is a specialized type of rubber seal used to prevent the leakage of lubricants, oils, or other fluids in rotating or reciprocating machinery. It is specifically designed to seal the gap between a rotating or moving shaft and the housing or component it passes through. 

A rubber O-ring, also known as a rubber seal ring or toroidal seal, is a circular-shaped mechanical gasket made from elastomeric materials. It is one of the most commonly used types of seals due to its simple design and effectiveness in creating a reliable, leak-proof seal.
Rubber O-rings are typically made from materials like natural rubber or synthetic compounds such as nitrile rubber (NBR), silicone rubber (VMQ), fluorocarbon rubber (FKM), or EPDM (ethylene propylene diene monomer). These materials offer excellent sealing properties, including flexibility, resilience, chemical resistance, and temperature resistance.

self-centering sealing washer, is a type of sealing component designed to create a reliable and secure seal between threaded fasteners and mating surfaces. What sets self-centering bonded seals apart is their design, which incorporates a centered rubber seal that automatically aligns with the mating surface. This design ensures proper alignment and consistent sealing performance, even in situations where slight misalignments might occur.

Valve stem seals are used in internal combustion engines to provide a seal between the valve stem and the valve guide. They are typically located at the top of the valve stem, where the valve stem passes through the cylinder head.
The primary function of valve stem seals is to control the lubrication of the valve stem and prevent the leakage of oil into the combustion chamber. They play a vital role in maintaining proper engine performance, reducing oil consumption, and preventing issues such as oil burning, excessive oil consumption, and fouled spark plugs. Materials such as rubber, silicone, or other elastomers that can withstand the high temperatures and pressures within the engine. They are designed to fit tightly around the valve stem and create a barrier that prevents oil from entering the combustion chamber while allowing a thin film of oil for lubrication.

Plastic products offer numerous advantages, including versatility, durability, lightweight nature, cost-effectiveness, design flexibility, and resistance to corrosion, moisture, and chemicals. It was can be categorized into different types based on their composition and properties, usually have: Packaging Materials, Household and Consumer Goods, Building and Construction Materials, Automotive Components, Electronics and Electrical Products,Medical Devices and Equipment,Agricultural and Horticultural Applications,Sports and Leisure Products...