Custom Hydraulic Seal for Extreme Temperatures in Mining Operations

• Customization: Available
• Material: NBR
• Usage: Engine, Transmission, Rear Axle, Gearbox
• Type: Haplotype
• Speed: High Speed
• Pressure: Pressure Type
• Lip: Composite Lip
• Standard: Standard, Nonstandard
• Applicable Temperature: From Minus 60 Degrees to Plus 300 Degrees
• Scope of Application: Various Chemical Substances
• Custom Specifications: Customizability Can Reach up to 500 Centimeters.
• Transport Package: Packaging Bag, Cardboard Box
• Trademark: Anran
• Origin: China Hebei
• HS Code: 4016931000
• Production Capacity: 100000pieces/Year

Product Description

Product Description

Oil seals, alternatively known as rotary shaft seals, play an indispensable role in mechanical systems by effectively preventing the leakage of grease, liquids, or dirt. These seals are fundamental in maintaining the integrity of any rotating or moving apparatus by stabilizing the space between stationary and dynamic components. A typical oil seal is ingeniously constructed with three core elements:
These include a sealing material, typically a robust rubber component, enhanced by metal casings and springs. This combination creates a highly adaptable sealing assembly.
A variety of types are available to cater to different applications, such as TC, TG, TA, SA, SB, SC, DC, MC, MG, TCV, TCN, and TC4, among others, offering a comprehensive selection for diverse requirements.
At Ningbo Zhongmu Rubber Products Co., Ltd, we pride ourselves on offering a vast array of superior rubber materials tailored for oil seal manufacturing, ensuring resilience across multifaceted operating environments. Our cutting-edge materials are engineered to withstand an extensive array of chemicals and endure extreme temperature fluctuations, both high and low.
[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.

We provide a bespoke service for non-standard oil seals, crafting them from specialized materials such as fluorine rubber, silicone rubber, fine rubber, and propylene rubber, to meet specific customer needs.

[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

[Oil seal and sealing principle]
The oil seal operates by forming a thin oil film through precision contact between the lip and the shaft. This dynamic sealing process harnesses the power of spring pressure coupled with the natural elasticity of the material. Upon rotation, frictional heat induces contraction of the lip, amplifying the seal's effectiveness; when static, it maintains contact, ensuring consistent sealing.

[Oil seal application fields]
Our oil seals are extensively employed in a multitude of applications such as engines, gearboxes, hydraulic pumps, and reducers. They are especially invaluable in high-temperature, high-speed, and corrosive environments, or where conventional rubber seals have failed. Notably, PTFE oil seals can astonishingly outlast traditional seals by up to 20 times, proficiently sealing water, acid, gas, and other challenging media.

[Oil seal selection and installation]
When selecting and installing oil seals, consider the shaft's rotation speed, temperature, pressure, and medium properties comprehensively. Ensure the vertical alignment of the shaft to avert tilting, and apply grease to the lip, minimizing dry grinding and prolonging the seal's life.
Product Superiority:

1. At Ningbo Zhongmu Rubber Products Co., Ltd, we are committed to the precise selection of top-grade materials, crafting components known for their exceptional performance and stability, further augmented by state-of-the-art automation technology.
2. Our products excel with outstanding elasticity and remarkable wear resistance, consistently performing in the most demanding environments.
3. Our dedicated team of technical experts is equipped to deliver customized solutions and timely support tailored to our customers' unique challenges.
4. We adhere to a rigorous quality control system, positioning ourselves as a preferred supplier, directly or indirectly, to many prestigious global enterprises.