Silicone Grease --- Wonderful for your MityVac vaccum pump

squirt_inducer_man

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*Edit: I changed the thread title due to the fact that it was a little bit misleading.
Old thread title:
Vaseline® (PROTECTING JELLY - Petrolatum) -- Not good for your equipment.
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The fundamentals of this statement is this:
Petrolatum based products breaks down plastic.
Source: The Rubber Center

Lubricate a rubber​


It is common to hear that coating a rubber with a greasy substance such as oil or petroleum jelly makes it more flexible. This seemingly logical gesture should be avoided at all costs! In the short term the rubber will soften and gain flexibility, but in the long run the lubricant will attack the material. The only rubbers that are resistant to fats and oils are Viton Rubber (FKM) and Nitrile (NBR). If you want to lubricate a rubber to make it slippery during installation, put a drop of dishwashing liquid. This makes the rubber slip without attacking it.


Concerning vaseline, it is a petroleum derivative. As mentioned above, hydrocarbons attack rubber. If you coat rubber gaskets with petroleum jelly to preserve them, you will get the opposite effect. After a few months, the rubber will become porous and you will need to change all your joints.

I don't understand why Vaseline® (PROTECTING JELLY - Petrolatum) have been recommended to me?
It breaks down plastic and rubber. I even used it on my Bathmate pumps and it also found its way into my washing machine (it's really hard to remove completely).


My homemade water trap imploded and my belief is that the major reason for this, is because of all the Vaseline® (PROTECTING JELLY - Petrolatum) I was using during my girth sessions. It gets covered everywhere.
View media item 2026
Even if you only apply it on your penis to Jelq with, it will get covered over your equipment because of the thickness of it and the problems to wash it off your hands.
Remember that 90% of the MityVac HydroVac penis pump kit is made from plastic and rubber.
1. The Acrylic cylinder.
2. Hoses/tubes.
3. Connectors.
4. MityVac vaccum pump.

What are your thought about this?

The bad thing is that Vaseline also have been covered over my cylinder, and these cylinders are made from Acrylic.

What is: Acrylic?​

Strong, stiff, clear plastic available in a variety of brilliant colors

About Acrylic​

clear acrylic sheets, rods, and tubes stacked

Acrylic is a transparent plastic material with outstanding strength, stiffness, and optical clarity. Acrylic sheet is easy to fabricate, bonds well with adhesives and solvents, and is easy to thermoform. It has superior weathering properties compared to many other transparent plastics.
Acrylic sheet exhibits glass-like qualities—clarity, brilliance, and transparency—but at half the weight and many times the impact resistance of glass. From durable signs and skylights, to eye-catching retail store fixtures, displays and shelves, acrylic plastics provide outstanding versatility, durability, and aesthetic qualities.


Is acrylic just plastic?
Acrylic, also known as Plexiglass, is a versatile plastic material with a variety of purposes and benefits, available in a spectrum of colors and opacities. Acrylic plastic was first produced in 1928 and brought to the market by Rohm and Hass Company around 1933.


This vaccum pump is made of PVC plastic.
Metallic parts inside.
1715426754867.jpeg

What is the reason for @92tmorgan pump breaking?
Did you @92tmorgan use Vaseline® (PROTECTING JELLY - Petrolatum) or any kind of fat or oil in combination with your girthwork?

Picture of his vaccum pump broken.
full


What are your thought about this?
It's not just Petrolatum based products that degrades plastic and rubber, but also any oil and grease will also degrade plastic.
The only plastic that will resist oils and fats/grease from degrading are Viton Rubber (FKM) and Nitrile (NBR).

Maybe the container I was using imploded because it was old, but I do not think we should recommend Vaseline® (PROTECTING JELLY - Petrolatum) any longer.
- But what should you use instead when we perform Jelqs and are pumping with water?
We can not use oils or fats?

But maybe my container for my water trap was just old, it have also been in the dishwasher machine on high heat for many years.

Maybe there will not be any trouble in continue using Vaseline® (PROTECTING JELLY - Petrolatum)?


I really wish to hear your thought on this!

Take care!
 
Last edited:
You can also a water based lubricant. Always use wd40 for all metal parts. After every session wash and completely dry your pump
 
Post #1 above are based on scientific data.
But I use Vaseline in combination with MityVac Hydro-Vac Penis Pump, and I have no negative from it.

Just wash it from the cylinder, and wipe away from the vaccum pump handle after your session is done, and you should not see any problems.

I also recommend to lubricate the rubber O-rings inside the pump with Silicone Grease. You don't want oils and fats on rubber O-rings. But that is just me. I'm probably to cautious with my pump. At least don't put WD-40 on O-rings and rubber/plastic.

*Edit: Added some information.
 
Last edited:
As long as you completely clean and dry it there is no fear of damaging y I ur devices
 
I recommend to lubricate all moving parts (inclusive metal parts) with Silicone Grease.
Make sure it is ONLY Silicone Grease.

The reason I do not recommend for example, WD-40 (Original WD-40 formula) has to do with, that if it gets inside the vacuum cylinder inside the vacuum pump handle/pump gun, it will for sure deteriorate the O-rings in there faster, and your Mityvac vacuum pump will not last as long. When the O-rings/seals inside the "pump gun" are dried out and do not create a good seal, the vacuum pump will start to leak vacuum pressure.

Your vacuum pump should not leak vacuum pressure when you pump up, and you have a good seal against your body with your cylinder.
Saying this and stating this as facts, will only make the Mityvac vacuum pump/"pumping gun" look bad. I can have my vacuum pressure at a solid 10 in.Hg for 5 minutes without touching the vacuum pump, it stays where I leave it.

If it goes down without you pushing the release button on the "pumping gun", or it leaking at your "fat pad" you have a leak in your vacuum system, there is no discussion about that.


Please take this seriously. Do not put WD-40 on rubber gasket and rubber seals. If you spray the "pumping gun" with WD-40 it will for sure creep inside the vacuum chamber and deteriorate the O-rings and vacuum seals faster.

Here are some notes about O-rings in order to keeping them healthy.
WD-40 is a popular multi-use product known for its lubricating and penetrating properties. However, it is not recommended for use on rubber O-rings or other rubber components. The reason for this is that WD-40 is a solvent-based product, and prolonged exposure to solvents can cause rubber to deteriorate and degrade over time.

Rubber O-rings are commonly used in various applications to create a seal between two mating surfaces. To maintain the integrity and longevity of rubber O-rings, it is best to use lubricants that are specifically designed for rubber components. Silicone-based lubricants are often recommended for use with rubber O-rings as they are compatible with rubber and help to maintain the flexibility and sealing properties of the O-rings.

If you need to lubricate O-rings or other rubber components, it is advisable to use a lubricant that is safe for use with rubber to prevent damage and ensure the continued effectiveness of the seals.

Note: Quote from Quora, but it's adds up and it explain it in a very simple and clear way.
I did not know about this before, so I want to spread the information so not anyone are damaging their O-rings and seal without knowing it.

I just wanted to make everyone aware of this.
/ Take care
 
I recommend to lubricate all moving parts (inclusive metal parts) with Silicone Grease.
Make sure it is ONLY Silicone Grease.

The reason I do not recommend for example, WD-40 (Original WD-40 formula) has to do with, that if it gets inside the vacuum cylinder inside the vacuum pump handle/pump gun, it will for sure deteriorate the O-rings in there faster, and your Mityvac vacuum pump will not last as long. When the O-rings/seals inside the "pump gun" are dried out and do not create a good seal, the vacuum pump will start to leak vacuum pressure.

Your vacuum pump should not leak vacuum pressure when you pump up, and you have a good seal against your body with your cylinder.
Saying this and stating this as facts, will only make the Mityvac vacuum pump/"pumping gun" look bad. I can have my vacuum pressure at a solid 10 in.Hg for 5 minutes without touching the vacuum pump, it stays where I leave it.

If it goes down without you pushing the release button on the "pumping gun", or it leaking at your "fat pad" you have a leak in your vacuum system, there is no discussion about that.


Please take this seriously. Do not put WD-40 on rubber gasket and rubber seals. If you spray the "pumping gun" with WD-40 it will for sure creep inside the vacuum chamber and deteriorate the O-rings and vacuum seals faster.

Here are some notes about O-rings in order to keeping them healthy.
WD-40 is a popular multi-use product known for its lubricating and penetrating properties. However, it is not recommended for use on rubber O-rings or other rubber components. The reason for this is that WD-40 is a solvent-based product, and prolonged exposure to solvents can cause rubber to deteriorate and degrade over time.

Rubber O-rings are commonly used in various applications to create a seal between two mating surfaces. To maintain the integrity and longevity of rubber O-rings, it is best to use lubricants that are specifically designed for rubber components. Silicone-based lubricants are often recommended for use with rubber O-rings as they are compatible with rubber and help to maintain the flexibility and sealing properties of the O-rings.

If you need to lubricate O-rings or other rubber components, it is advisable to use a lubricant that is safe for use with rubber to prevent damage and ensure the continued effectiveness of the seals.

Note: Quote from Quora, but it's adds up and it explain it in a very simple and clear way.
I did not know about this before, so I want to spread the information so not anyone are damaging their O-rings and seal without knowing it.

I just wanted to make everyone aware of this.
/ Take care
Most excellent post. Maintenance is so important with these high end products
 
For those who use silicone grease religiously to maintain your equipment, there are silicone marine grease as well to upkeep your equipment. It's slightly pricier, but the formulation for marine silicone grease takes one step further to protect your equipment against the chemicals and mineral from your municipal water supplies. Boaters and those who live around marine environment can verify this.
 
You should not dip your entire vaccum pump in Silicon Grease. Just lubricate the O-rings and moving parts.
 
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