Product Description
Oil seals, often known as rotary shaft seals, are vital components designed to effectively seal grease, liquids, or dirt. These indispensable parts play a crucial role in any rotating and moving assembly, meticulously maintaining the separation between stationary and moving parts within mechanical equipment. An oil seal generally comprises three essential components that work in harmony to ensure optimal performance:
These components include a sealing material, typically a robust rubber component, metal casings, and resilient springs. Together, they form a versatile sealing assembly adept at accommodating a myriad of applications.
The variety of types available are extensive, featuring TC, TG, TA, SA, SB, SC, DC, MC, MG, TCV, TCN, and TC4, among others, offering tailored solutions for diverse needs.
We proudly provide a comprehensive array of rubber materials tailored for the production of oil seals, ensuring compatibility with a spectrum of operating environments. These high-performance materials are engineered to withstand exposure to a wide range of chemicals and endure both extreme high and low temperatures, providing reliability under the harshest conditions.
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[Oil seal material introduction]
Ding Rubber (NBR) |
Temperature resistance of 100ºC, good oil resistance, wear resistance, anti-aging, good sealing effect. |
silica gel (VMQ) |
Temperature resistance of 200ºC, general oil resistance, high temperature resistance, good waterproof, non-toxic. |
Fluorogel (FKM) |
Temperature resistance of 280ºC, good oil resistance, wear resistance, high pressure resistance, corrosion resistance. |
ethylene-propylene-diene misch-polymere (EPDM) |
Temperature resistance of 150ºC, general oil resistance, corrosion resistance. |
(PTFE) |
Temperature resistance of 280ºC, good oil resistance, wear resistance, high pressure and corrosion resistance. |
polyurethane (PU) |
Temperature resistance of 90ºC, good oil resistance, wear resistance. |
[Oil seal core structure type]
Single lip structure |
Single channel sealing lip for low pressure reciprocating motion (e. g. automotive crankshaft oil seal) |
Double lip structure |
Two upper and lower sealing lips, a main seal (contact shaft), a secondary seal (dust), often used in high pressure environment |
Composite lip structure |
Main lip + dust lip + buffer spring (like type NOK TCV), can withstand both radial and axial forces |
labyrinth packing |
Multi-channel ring groove design to block oil by throttling effect (suitable for high-speed rotating axis) |
Seal the oil swing ring |
Metal ring rotating centrifugal oil swing with shaft (commonly used in gearbox gearbox) |
[Key structural components of the oil seal]
Component name |
Material selection |
function declaration |
seal(ing)lip |
NBR/FKM/PTFE |
Main seal surface, the contact shaft forms a dynamic seal |
spring |
Stainless steel / carbon steel |
Provide lip pretension to compensate for wear |
skeleton |
PA6/PC |
Fixed the sealing lip shape and transfer the mounting stress |
Dust-proof lips |
polyurethane elastomer |
Blocking the entry of solid impurities (optional) |
Self-lubricating coating |
plumbago/PTFE |
Reduce the friction coefficient and extend the life life |

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