- Metric oil seals are designed to fit in metric-sized shafts and bores, providing a secure seal to prevent oil leakage. These seals are typically made of rubber, silicone, or PTFE (polytetrafluoroethylene) materials that offer excellent resistance to oil, water, and other fluids. The choice of material for the seal depends on the specific application and operating conditions, such as temperature, pressure, and speed.
- Metal, such as steel, which provides strength and durability.
- One of the key factors that determine the effectiveness of an oil seal is its material composition. Common materials used in oil seals include rubber, fluoropolymer, and synthetic materials like PTFE (polytetrafluoroethylene). Each material offers unique properties that make it suitable for specific applications. For instance, rubber seals are known for their flexibility and resistance to oil and heat, making them ideal for low-pressure environments. On the other hand, PTFE seals are highly durable and resistant to extreme temperatures and chemicals, making them suitable for high-pressure and harsh conditions.
- There are two main types of spark plugs commonly used in dirt bikes standard spark plugs and iridium spark plugs. Standard spark plugs are made of a copper core surrounded by a nickel alloy, while iridium spark plugs have a fine wire center electrode made of iridium, a precious metal known for its durability and high melting point. Iridium spark plugs are more expensive than standard spark plugs, but they last longer and provide a more consistent spark, resulting in improved engine performance.
• Super helix seal
Auto Oil Seal:



Importance of Spark Plugs and Wires
The sealing lip is always made of a rubber or synthetic material. For oil seals with a rubber outer case (R, RST, GR, GRST), the rubber quality of the sealing lip and the outer case are the same.
Ethylen-Propylen-Dien-Kautschuk (EPDM)
To increase the pressure around the shaft and maintain the seal’s integrity, certain lip seals have an extra spring looped into the flexible rubber part.
The primary function of an oil seal is to create a barrier between the rotating or moving parts of a machine and prevent oil or other fluids from leaking out. This helps to ensure that the machinery operates smoothly and efficiently without any loss of lubrication or contamination of the surrounding environment. In addition to preventing leakage, oil seals also help to retain lubricant within the system, extending the life of the equipment.
With minor lip
Type code
Table 2 b): Common types of oil seals (without spring)