What Do the Numbers on an Oil Seal Mean

The numbers on an oil seal, also known as a shaft seal or rotary seal, provide important information about its dimensions, material, and design specifications. Understanding these numbers is crucial when selecting the right oil seal for a specific application. Here's a breakdown of the typical numbering system used for oil seals:

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Shaft Diameter (ID or Inner Diameter):

The first set of numbers usually represents the shaft diameter or the inner diameter (ID) of the oil seal. This measurement is critical because it indicates the size of the shaft around which the oil seal will be installed. For example, if the number is 25, it signifies that the oil seal is designed for a shaft with a 25-millimeter diameter.

 

Housing Bore Diameter (OD or Outer Diameter):

The second set of numbers corresponds to the housing bore diameter or the outer diameter (OD) of the oil seal. This measurement is crucial as it indicates the size of the bore or cavity in the housing where the oil seal will be placed. For example, if the number is 40, it means the oil seal is designed to fit into a bore with a 40-millimeter diameter.

Rubber Skeleton Oil Seal

Width (W):

The third set of numbers or letter represents the width of the oil seal. It specifies the radial dimension of the seal, indicating how thick or wide the oil seal is. For example, if the number is 7, it means the oil seal has a width of 7 millimeters.

 

Lip Type or Designation:

Some oil seals may have additional letters or codes indicating the lip type or special design features. These codes specify the sealing lip material, configuration, or any special features that the oil seal may have. Common lip types include single lip (S), double lip (D), and triple lip (T).

 

Material Code:

In certain numbering systems, a letter or code may be used to indicate the material composition of the oil seal. Different materials may be chosen based on factors like temperature resistance, chemical compatibility, and application requirements.

 

For example, if you have an oil seal with the number "25-40-7," it can be interpreted as follows:

 

Inner Diameter (ID): 25 millimeters

Outer Diameter (OD): 40 millimeters

Width: 7 millimeters

 

Understanding these numbers is crucial when replacing or specifying oil seals for machinery or equipment. It ensures compatibility with the shaft and housing dimensions and helps maintain effective sealing performance. When in doubt, it's recommended to refer to the manufacturer's documentation or consult with a supplier to ensure the correct oil seal is selected for the intended application.

TG4 oil seal is a mechanical element used to seal oil. TG4 can isolate lubricating parts and output parts to prevent oil leakage. Metal shell + rubber wrap, with self-tightening spring.Our company has done a lot of research on TC/TG4 products. Whether it's material, temperature, sealing or our durability, we meet the standard for quality oil seals. We have thousands of models in stock.

Product Description

Click here to contact us .If you need high quality TG4 oil seal, please contact us.

Product details&#;

Product name&#;TG4 TC skeleton oil seal 3 lips NBR Rubber Seal Industries Sealing Automotive Oil Seal

Type: TG4 oil seal

Size&#;other

Material:NBR/FKM

Oil seals are used to protect shafts and bearings from ingress of dirt and foreign matter and egress of oil or grease. An oil seal generally consists of an outer circular metal part and an inner flexible member that does the actual sealing and is bonded to the metal part by chemical adhesive agents.Some of the most common materials used for oil seals are nitrile, highly saturated nitrile, Viton®, FEP, silicone and polyacrylate. Simriz® oil seals are molded of an elastomer that has the broadest chemical resistance of any elastomeric material.

TG4 oil seal is modified oil seal of general type. It can instead of TC, TB, VB, VC, SB, TC4, DKB oil seal etc. It is designed 3 lips inside with good sealing performance. TG has special design of a corrugated OD.
Both TC oil seals and TG4 oil seals belong to skeleton oil seals. The structure of the TC oil seal and the TC4 oil seal belong to the outer covering of rubber, the inner skeleton and the spring. The TC oil seal belongs to the lip seal ring of the rotating shaft, and the TG4 oil seal belongs to the seal ring for reciprocating motion.

TG4 oil seal is a typical representative of the skeleton oil seal. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to leak the lubricating oil. 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. The TG4 oil seal has a three-lip structure inside, which is better in sealing and dustproof than the TC oil seal. Widely used in gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, axles and other parts.

Skeleton oil seals are the typical example of oil seals. Generally oil seals means skeleton oil seals. The function of oil seals is for insulating the part which need lubrication in transmission parts and outside environment. The lubrication oil can not be permeated.The TG4 oil seal standard skeleton oil seal is a sealing element used to seal the oil of the rotating shaft in the mechanical equipment, and the cavity is basically static, so the TG4 oil seal is also called the rotating shaft lip seal. Common skeleton oil seals have single lip and double lip. With the development of skeleton oil seals, double lip skeleton oil seals gradually replaced single lip ones. During mechanical friction, some oil enters when the machine is running. In order to prevent the oil from leaking from the gap of the machine, it is necessary to use oil-sealing components. The skeleton oil seal can prevent leakage and protect the environment.

Product Type

 

Temperature

FKM(-20~280°C)

MOQ

according to size

Hardness

70 

Type

TG4

Size

Any size

Uses

Automobile,motorcycle crankshaft,

camshaft,differentialshock absorber,

engine,axle,front and rear wheels, etc.

Colors

black, brown, red,  etc.

Feature High temperature resistance, acid and
alkali resistance,wear resistance

 

Stock model

Size&#;

TG4-25*45*5

TG4-42*56*10

TG4-72*96*10

TG4-340*380*18

TG4-5.5*16*8

TG4-25*45*7

TG4-42*57*7

TG4-72*100*10

TG4-350*380*15

TG4-6*12*8

TG4-25*45*8

TG4-42*57*10

TG4-72*100*12

TG4-350*380*16

TG4-6*13*8

TG4-25*45*9

TG4-42*58*7

TG4-72*100*13

TG4-350*390*18

TG4-6*15*4

TG4-25*45*10

TG4-42*58*8

TG4-72*105*10

TG4-350*390*20

TG4-6*15*7

TG4-25*45*11

TG4-42*58*10

TG4-72*105*12

TG4-350*395*20

TG4-6*16*5

TG4-25*45*12

TG4-42*58*12

TG4-72*105*13

TG4-350*400*25

TG4-6*16*7

TG4-25*46*7

TG4-42*59*10

TG4-72*105*15

TG4-350*405*20

TG4-6*17*7

TG4-25*46*10

TG4-42*60*6

TG4-72*110*12

TG4-360*390*15

TG4-6*18*6

TG4-25*47*5

TG4-42*60*7

TG4-72*110*13

TG4-360*390*16

TG4-6*18*7

TG4-25*47*6

TG4-42*60*8

TG4-73*90*7

TG4-360*400*18

TG4-6*19*7

TG4-25*47*7

TG4-42*60*9

TG4-73*90*7.5

Goto Dingtong to know more.

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TG4-360*400*20

TG4-6*20*5.5

TG4-25*47*8

TG4-42*60*10

TG4-73*95*7

TG4-360*405*20

TG4-6*22*7

TG4-25*47*10

TG4-42*60*12

TG4-73*95*12

TG4-370*410*15

TG4-6*22*8

TG4-25*47*12

TG4-42*62*7

TG4-73*97*12

TG4-370*410*18

TG4-6*25*6

TG4-25*48*7

TG4-42*62*8

TG4-73*98*12

TG4-370*410*20

TG4-6*25*8

TG4-25*48*8

TG4-42*62*9

TG4-73*100*14.5

TG4-375*420*18

TG4-6*26*7

TG4-25*48*9

TG4-42*62*10

TG4-73.03*90.5*12

TG4-380*420*16

TG4-6.5*14.5*7

TG4-25*48*10

TG4-42*62*12

TG4-74*90*10

TG4-380*420*18

TG4-7*14*4

TG4-25*48*11

TG4-42*63*7

TG4-74*94*10

TG4-380*420*20

TG4-7*15*5

TG4-25*49*10

TG4-42*63*9

TG4-74*95*7

TG4-380*430*20

TG4-7*16*7

TG4-25*50*7

TG4-42*64*7

TG4-74*95*8

TG4-380*440*25

TG4-7*17*5

TG4-25*50*8

TG4-42*64*8

TG4-74*95*12

TG4-390*410*16

TG4-7*17*7

TG4-25*50*10

TG4-42*64*9

TG4-74*95*13

TG4-390*430*16

TG4-7*18*5

TG4-25*50*12

TG4-42*64*10

TG4-74*96*7

TG4-390*430*18

TG4-7*18*7

TG4-25*52*7

TG4-42*64*12

TG4-74*96*12

TG4-390*430*20

TG4-7*19*5

TG4-25*52*8

TG4-42*65*7

TG4-74*100*12

TG4-390*450*25

TG4-7*19*7

TG4-25*52*8.6

TG4-42*65*8

TG4-74*100*13

TG4-400*430*15

TG4-7*20*7

TG4-25*52*10

TG4-42*65*9

TG4-74*102*10

TG4-400*440*18

TG4-7*22*6

TG4-25*52*12

TG4-42*65*10

TG4-74*102*15

TG4-400*440*20

TG4-7*26.2*5.5

TG4-25*53*10

TG4-43*58*7

TG4-75*85*10

TG4-410*440*15

 

Approaching NOK-CN factory

The TG4 oil seal is an oil seal with a metal shell completely wrapped by rubber, with a self-tightening spring and an additional anti-pollution sealing lip.The outer ring is threaded, and the fluorine rubber skeleton oil seal represents that the material of the skeleton oil seal is fluorine rubber.NNK is a brand of NOK-CN factory, all products adopt professional technology to ensure maximum sealing performance while reducing friction to meet the high quality requirements of TG4 oil seals

 

FAQ&#;

1.why more and more customers choose us?a. We are specialized in the manufacturing and exporting of high quality seals Choose us isto choose the rest assured. b.We mainly produces various types,specifications, models of the seals of high precision mechanical components.We have all the specifications of what you need to help you achieve one-stop shoppingsave time,effort and worry.
c.we has ona been a domestic and internationa numerous oil seal mould suppl business of manufacturer. service for 15 vears. we have professionata ents and product research and development equipmentour research and development ability. is the comestic irst-c ass seamanuiacturernome .
d.we provide one-stop sealing solutions. and provide a full range of services. from product design. mold developmentstamping skeletonvulcanization molding,clip. screening and packaging,The entire process would take a shortermore stable quality.

2. What is your packing?
a.Paper roller: 10pcs in one roller 200 rollers in one carton

b.PP baq: 50 or 100pcs in one bag15or 30 bags in one carton

c.Box: 1pc to a box

d.According to customer's request.

3.Date of Delivery ?

a. 1-2 days if goods in stock.
b. 10-15 days if goods out of stock with molding

c.25-30 days if goods out of stock without molding

4.Pavment Term:

a.30% T/T in advance and 70% balance paid before shipment

b.West union/ Money Gram

c.Paypal

d. others for discussion

5. Can you produce according to the samples?
a. we accept oom and oem at the same time.e have the abiity to provide the sample of the products of decomposition.develop the mouldfor production.
6. How do you make our business long-term and good relationship?
a.We will continueto improve the process control and improve the quality of our products and work to reduce operating costs and provide a competitive price for customers,to ensure that customers benefit

b. we seriously treat every customer in good faith with them to do business. make friends. no matter how much volume.we willprovide

For more information, please visit t type skeleton oil seal for automotive engine.