TMC-19 Mechanical Vacuum Pump Oil – TMC Industries, Inc.

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TMC-19 Vacuum Pump Oil

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Vacuum Pump Fluid
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TMC-19 mechanical pump fluid is an affordable, molecularly distilled hydrotreated paraffinic oil for use in mechanical vacuum pumps. Good vapor pressure and low back streaming make this a good choice for non-corrosive vacuum applications. This product will support vapor pressures down to 1x10-5 Torr. If deeper vacuum is desired, TMC-20 would be a better choice.

The price and quality make this the perfect choice for many applications, even where lower-cost oils are used. Not recommended for oxygen and highly reactive gas loads. 

An independent testing laboratory performed a modified RBOT D-2272 test to determine the oxidative stability of TMC-19 compared to Inland 19.  This test employs a method to achieve rapid oxidation of the lubricant tested and then measure the degradation characteristics of the oil.  

In the test results below, you will see that even though the TMC-19 lasted longer than Inland 19 it also exhibited less viscosity change and less sediment weight at the conclusion of the test.

TMC-19 Inland 19
Total min. to destruction  40 35
Viscosity change @ 40? +9.18% +13.98%
Sediment Weight 31.7 mg 41.3 mg


Vapor Pressure @ 25 °C

1X10-5 Torr

Viscosity @ 40 °C

59 cst

Pour Point


Specific Gravity @ 22 °C

0.86 g/ml

Flash Point - C.O.C.

235°C - 455°F

Fire Point - C.O.C.

260°C - 500°F

Shipping Policy

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

Shipping Time -- Most orders received before 3:00PM Central Time will ship the same day, provided the product ordered is in stock. Most orders received after 3:00 PM will ship the next business day. Orders are not processed or shipped on Saturday, Sunday or major US holidays.

We cannot guarantee when an order will arrive. Consider any shipping or transit time offered to you by the carrier as an estimate. We encourage you to order in a timely fashion to avoid delays caused by shipping or product availability.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Product Datasheet
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