- Imperfections on the shaft (burr, corrosion, etc.), which will directly affect the service life of the oil seal.
- The dimensions 45x62x8 denote the outer diameter, inner diameter, and thickness of the oil seal, respectively. In this case, the outer diameter measures 45mm, the inner diameter stands at 62mm, and the thickness is 8mm. These measurements are critical as they determine the compatibility of the seal with different mechanical components, ensuring a snug fit and optimal performance.
- Shorty Spark Plugs Igniting Innovation in Miniature Form
Double metal cased
Conventional oil is the most commonly used type of oil. It is ideal for light-duty, late-model cars with low to average mileage and a simple engine design.
Select your oil seal type according to Table 2.

H7 or H8
2. If the nominal bore diameter exceeds 400 mm:
H7
(5) The surface finish of the shaft directly affects the service life of the oil seal, that is, the higher the shaft finish, the longer the service life of the oil seal.
The steering gear sector shaft is located inside of the steering gear box, and turns the pitman arm when activated by the steering wheel. This causes the wheels to turn. The steering gear sector shaft seal keeps fluid from leaking out of the steering gear box. The fluid inside the gearbox keeps the rotating parts moving smoothly while preventing metal-on-metal contact. If you notice fluid leaking around the steering box, pitman arm, or sector shaft, check the steering gear sector shaft seal for damage. If you need replacement steering parts or seals, check out O'Reilly Auto Parts and find the right fit for your car, truck, or SUV.
Oil seals are also known as rotary shaft seals or lip seals. They are flexible rings of elastomer designed to secure boundaries between moving and stationary components in a machine. Although these rings are flexible, they are durable enough to withstand wear, tear, friction, and exposure to oil.

crankshaft oil seal.