NPR rear hub inner oil seal size: 82*121*12/19 OE:8-97122937-0 skeleton oil seal

Short Description:

The skeleton oil seal is a typical representative of the oil seal. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the external environment, so as not to let the lubricating oil leak. The skeleton is like the steel bars in the concrete member, which acts as a reinforcement and enables the oil seal to maintain its shape and tension. According to the structure, it can be divided into single lip skeleton oil seal and double lip skeleton oil seal. The auxiliary lip of the double-lip skeleton oil seal plays a dust-proof role to prevent external dust and impurities from entering the machine. According to the skeleton type, it can be divided into inner skeleton oil seal, exposed skeleton oil seal and assembled oil seal. According to working conditions, it can be divided into rotary skeleton oil seal and reciprocating skeleton oil seal. For gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, axles and other parts.


Product Detail

Product Tags

Specification

Wheel oil seal

85*121*12/19

Advantages of oil seals:

Good surface gloss, good elasticity, excellent sealing effect, good weather resistance, good material stability, customized non-standard models, mature technology, stable quality

In order to use the oil seal reasonably, the following points should be paid attention to:

(1) Shaft speed Due to design and structural reasons, high-speed oil seals should be used for high-speed shafts, and low-speed oil seals should be used for low-speed shafts. Low-speed oil seals cannot be used on high-speed shafts, and vice versa.

(2) The degree of eccentricity on the installation If the eccentricity of the oil seal and the shaft is too large, the sealing performance will be deteriorated, especially when the shaft speed is high. If the eccentricity is too large, a "W"-shaped oil seal can be used.

(3) Note that there should be a certain amount of lubricating oil on the lip of the oil seal.

(4) Special attention should be paid to prevent dust from immersing in the oil seal.

(5) The oil seal with general pressure has poor pressure bearing capacity, and the oil seal will be deformed when the pressure is too large. Under the condition of excessive pressure, a pressure-resistant bearing ring or a reinforced pressure-resistant oil seal should be used.

(6) When the ambient temperature is high, polyacrylate or silicon, fluorine, and silicon fluorine rubber should be used. And should try to lower the oil temperature in the tank. When the operating temperature is too low, cold-resistant rubber should be used.

(7) 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.

parameter

product name Wheel oil seal
size 85*121*12/19
Material rubber and steel
OEM 8-97122937-0
Serve Sales / After Sales
warranty period 1 year
Minimum order quantity 50PCS
Package Oupin packaging or neutral packaging can also be
customized packaging
delivery time 15-30DAYS
Shipping terms
payment terms T/T   D/P credit card
OEM&ODM: Custom-made samples are acceptable
material Low
TEMP.
High
TEMP.
Performance
NBR -40 120 Good resistance to alcohol,amines, petroleum oils, and
gasoline over a wide range of temperature. Also good resistance to caustic salts and fair acid. Poor in strong oxidants, chlorinated hydrocarbons, ketones, and esters
HNBR -25 140 HNBR is made from NBR by hydrogenation. It has high
temperature resistance, abrasion resistance and good
physical properties.
ACM -25 150 It is used in diaphragm, hose for automotive application.
Good resistance to heat, ozone and oil. Generally
attacked by water, alcohol, glycol and aromatic
hydrocarbons. The molecular structure contains ethyl acrylate (EA). Butyl acrylate (BA), and methoxy ethyl acrylate (MEA). High BA content get better low temperature resistance, and high MEA content get more oil resistance.
EPDM -40 125 Stable in polar fluids (alcohol, ketone, and glycol),
and hydrochloric acid. Due to the low specific gravity, it can compound with large amount filler.
VMQ -60 125 The most widely temperature ranges for application.
Good weather and ozone resistance, but poor mechanical property and chemical resistance.
FKM -20 250 Fluoroelastomers have a high degree of chemical
stability and are currently the best media resistance
of any elastomer. Type 26 fluoroelastomer resistant
to petroleum-based oils, diester oils, silicone ether
oils, silicic acid oils, inorganic acids, most organic, inorganic solvents, drugs and so on

Factory production line

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Product Details

Skeleton oil seal
Skeleton oil seal

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