Things you should know before buying Rubber Oil Seals

If you deal with rotatory shaft equipment, you would probably be having rubber seals in your mechanical assembly. For any manufacturing company, optimal functionality, efficiency, and long service life are essential to your success in the market. A component that is majorly underappreciated within a machine assembly, would be oil seal. 

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Shaft seals are used to prevent lubricant leaks like oil or grease and protect machinery from dirt, dust, and water&#;which makes them invaluable to industrial operations. In this post, we will dive deeper into oil seals and discuss everything that one must know, such as what it is, how it works, types, applications, and what to keep in mind when buying oil seals. 

What are rubber oil seals? 

Rubber oil seals are placed between moving and static parts of mechanical equipment to prevent damage caused by moisture, contaminants, etc. Also known as rotatory shaft seals, grease seals, fluid seals, lip seals, and dirt seals; oil seals play an important role in closing the gaps between moving and stationary parts of machines. 

Their main purpose is to retain or separate fluids from mixing and escaping the gauge, as well as stop moisture, abrasives, corrosive materials, and foreign contaminants from entering the parts, thereby ensuring maximum machine efficiency. Moreover, shaft rubber seals help prevent lubricant leakage at high pressure, for instance, when the machine is working at an extremely high pace. 

How does rubber oil seal work? 

Oil seals work by retaining lubricant in a thin layer between the lip and the shaft. These seals are attached to the bearing, with their lip pressing against the rotating shaft and the casing resting against the housing to hold the seal in place. 

Oil seals perform some functions that ensure functionality at all costs and they do this by retaining lubricants at all costs and not making them escape no matter how high the pressure is.  Whenever an oil seal fails, it creates seal leakage allowing abrasives, corrosive moistures and sediments to enter machines. Oil seals are especially used in equipment that has rotating, oscillating, and reciprocating shafts &#; pumps, pistons, etc. 

Different types of seals offered by rubber products manufacturers in India include &#; Single and double lip oil seals, metal cased, external and internal oriented oil seals, and spring-energized oil seals and you can pick the one that best suits your industry requirements. 

Applications of Oil Seals 

Practically, all machine equipment including assembled machines, car engines, and PTFE machined parts use these oil seals to prevent harmful interactions that could possibly result in damaged parts. They are used in the assembly of Elevators, conveyor belts, engines, grinding mills, pipelines, wind turbines, and more. 

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When equipment is under high pressure, lubricants tend to escape, and dry parts clash. Oil seals help prevent this by sealing holes where lubricants can leak out. rubber seals are designed to offer optimum sealing performance and extreme durability even under high-peripheral speed. They are lightweight, compact, and exhibit high self-lubricating properties. Oil seals are manufactured with high-grade materials and last long without showing any signs of hardening, softening, or aging. 

Moreover, oil seals are widely used throughout the aerospace industry in both space exploration and aviation applications. Sujan Industries manufactures all aircraft rubber items including O-rings, Gaskets, Seals, Pistons, Grommets, Washers, and Protective Boots & Bellows. In the aviation sector, pneumatics and hydraulics are used to operate components like landing gear and wing flaps. Rubber gaskets are needed in these systems to keep dust and air out while ensuring aircraft components run effectively.

How to Choose the Right Oil Seal 

Picking the right type of oil seals is crucial for the proper functioning of machines because in some situations not all types can fit to work on certain machines. 

There are quite a few factors to put into consideration when you&#;re choosing the right oil seal for your machine. Some of these factors include &#; dimensions, pressure, temperature, type of fluid, lubricant, shaft speed, shaft and bore tolerance, and more.

The capacity of oil seals to handle different intensities of pressure varies with their composition and application, so it is important to understand the compression set of your equipment. Just like the pressure, the temperature that your oil seal will be operating in must be known to be able to choose one that can withstand the working temperature. 

Likewise, different types of fluids like grease, water, oil, fuels, etc. will come into contact with oil seals. So, knowing what type of fluids will be in constant contact with oil seals will help you choose the one capable of withstanding the surrounding conditions. When we talk about lubricants, seals always perform well when lubricated, however, in some machines there are dry spells.  If you are a supplier of aftermarket parts in India or a user looking for oil seals in the aerospace industry, your search might end with Sujan Industries. 

Wrapping Up

Oil seals are critical to a machine&#;s functionality. A machine&#;s oil seals are critical to its functionality. Picking the right seal for your machine is vital as it not only guarantees the optimum performance of applications but also ensures a safe working environment for years to come. With so many rotary shaft seal options available, it can be hard to know which one to choose for your machine! Contact us today to speak to one of our experts and pick the best one for you.

Of course it's really silly that they fitted the new clutch without addressing the issue of the oil leak. Any oil inside the bell housing should immediately flag up that additional action is needed. Even the smallest of leaks from the input shaft seal is unacceptable as it'll always just get worse with the result you've experienced. They should have left you in no doubt that this issue needed to be addressed.

Having said all that, leaks from the input shaft on our gearboxes is not all that uncommon, seems to be a wee bit of a weak point on them. Also seems to be often accompanied by detectable wear in the first motion shaft (input, splined , shaft you can see) bearing so it's just as well the seal is integral with the bearing and you can't do just the seal on it's own. The bearing and that splined shaft can't be extracted into the bellhousing which is why the box needs to be dismantled, to allow the shaft with it's bearing to be removed. Luckily I've never had to do one and I know the "official" way to do it is to remove the casing entirely and then the gear clusters - quite time consuming - However I've seen videos showing how you can do it without completely dismantling the box which look very "doable" but probably not for the faint hearted to attempt. Maybe the video guide Panda Nut mentioned above shows this procedure? I must have a look for it.

In your situation I think you need to consider
1. Carrying out the actual replacement of the clutch itself is not a very difficult operation - you don't need to be a "super tech" for a job like this so even someone not all that proficient should be able to achieve a good out come.

2. When you got the car back with the new clutch fitted it worked Ok I think? So it looks like they got the job done well enough - what went wrong was that, for whatever reason, or incompetence, they failed to properly take into account the ongoing effect of the oil leak and impress on you the need to attend to this which resulted in your present situation.

3. - and this is the biggie, They are not going to be the ones who are working on the gearbox to rectify this leak/bearing problem. As this leak/bearing problem is not exactly an unknown one, anyone specializing in gearbox repair will be familiar with it and with this gearbox, so the likelihood is that the "specialist" will do a good job in this respect leaving the garage with the job of just doing the clutch which is a job many DIY driveway grease monkeys manage to do very satisfactorily.

4. I presume the garage and gearbox specialist will warranty their work? So if it all doesn't work out it should then be covered by their guarantee - I'm thinking especially of the gearbox repair. But that's the pessimistic side of me showing through! Get the seal bearing sorted out and all should be well.

So I think that, if it was me, I'd just authorize the gearbox repair and feel moderately confident that the issue will thus be sorted. I think this is probably the best and most cost effective thing for you to do - or, if you're totally lacking in conscience or scruples, just get them to clean up the flywheel, pressure plate and inside the bell housing with a good soaking of something like brake cleaner - None of these parts are worn in any way and couple of spray cans would probably make a good job. Then slam it back together with a new driven plate (friction lining - because you can't effectively clean up heavily contaminated friction material) Take it home and don't drive it at all and either part ex it for another car or sell it privately. Unless you renew that seal/bearing it's only going to be a matter of days, possibly weeks, before you're back in this situation again.

You're in a horrible situation here and my heart bleeds for you - hope it all comes out well in the end whatever you decide to do.

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