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Description
CHRISTO-LUBE MCG 111 Oxygen Compatible GreaseKey Features: Fully fluorinated grease thickened with PTFE. Outstanding stability with Oxygen. Water resistant. Chemically inert. Operates under extreme temperatures 60C to 230C Registered with NSF as H 1 lubricant (Reg. 135016) For valves and o rings on SCUBA, O2 tanks, medical devices, LOX & GOX systems. Description: CHRISTO LUBE MCG 111 is a fully fluorinated grease thickened with PTFE which operates under extreme temperature conditions, has
Key Features:
- Fully fluorinated grease thickened with PTFE.
- Outstanding stability with Oxygen. Water-resistant. Chemically inert.
- Operates under extreme temperatures -60ºC to 230ºC
- Registered with NSF as H-1 lubricant (Reg. 135016)
- For valves and o-rings on SCUBA, O2 tanks, medical devices, LOX & GOX systems.
Description:
CHRISTO-LUBE® MCG 111 is a fully fluorinated grease thickened with PTFE which operates under extreme temperature conditions, has outstanding stability with oxygen and excellent compatibility with metals, plastics and elastomers. This medium consistency fluorinated lubricant is useful in lubricating valve and regulator components where non-reactivity with harsh chemicals, fuels and solvents is an important factor. CHRISTO-LUBE® MCG 111 is qualified to MIL-PRF-27617G Types I, II & III and is also registered with NSF as an H-1 lubricant meaning it is acceptable for use in or around food processing equipment.
Packaging:
Check each variant for packaging information. CHRISTO-LUBE® MCG 111 is manufactured by ECL.
Typical Properties:
| Type | PFPE |
|---|---|
| NLGI Grade | 1.5 |
| Color | White |
| Temperature Service Range | -76 to 446 ºF (-60 to 230 ºC) |
| (BAM) Oxygen Impact Pressure |
bar | psi | |
| Ambient Temperature | 689 | 10,000 | |
| 100ºC (212ºF) | 110 | 1595 | |
| 100ºC to 150ºC (212ºF to 302ºF) | 80 | 1160 | |
| 150ºC to 200ºC (302ºF to 392ºF) | 70 | 1015 |
Typical Applications:
CHRISTO-LUBE® MCG-111 can be used as a Fluorinated Lubricant for Valves and O-Rings on:
- SCUBA: Self-Contained Underwater Breathing Apparatus: for both open and closed circuit recreational, commercial and military diving systems.
- SCBA: Self-Contained Breathing Apparatus for Firefighters: oxygen-enriched breathing tanks used by firefighters, rescue personnel and mine workers.
- Medical Oxygen Devices: oxygen concentrators and flow meters, portable O2 tanks and hyperbaric oxygen therapy.
- Industrial Flow Meters for Chemicals and Gases: For valves, seals and O-Rings used in systems that carry harsh, flammable, corrosive and toxic liquids as well as LOX, GOX and other process gases. Excellent lubricity. Tight sealing. No flash point.
It can also be used as Aircraft and Instrument Grease as it is chemically inert and resistant to hydrocarbon fuel and liquid oxygen and it is qualified to Qualified to MIL-PRF-27617G, Types I, II, III.
Prop 65 Warning for California Residents:
⚠ WARNING: Cancer and Reproductive Harm. For more information, go to www.P65Warnings.ca.gov
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Highly recommend
Size: 1.8 Fl Oz (Pack of 1), Color: Original
Very nice mineral sunscreen. Easy to apply, long lasting and effective.
Very pricey, good to get it on Prime Day.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Great option for a natural finished look
Size: 1.8 Fl Oz (Pack of 1), Color: Original, Size: 1.8 Fl Oz (Pack of 1), Color: Original
I have been using Colorscience Total Protection Face Shield SPF 50 Original color for over 5 years. I love that the color blends with your skin so well and provides a natural looking finish.
It does not cover all of my dark spots or defects, but it makes my natural skin look better. The finish is soft and silky and the 50 helps protect my skin from additional sun damage. If you are looking for a more natural finish, this is a great choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 15, 2025
★★★★★ 5
Excellent sunscreen
Size: 1.8 Fl Oz (Pack of 1), Color: Original, Size: 1.8 Fl Oz (Pack of 1), Color: Original
Excellent sunscreen. Colorescience Sunforgettable Total Protection Face Shield Classic SPF 50 has a lightweight texture, absorbs quickly, and leaves skin feeling soft and smooth. It provides very good protection and is perfect for everyday use. ☀️✨
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Reviewed in the United States on March 6, 2026
★★★★★ 3
Made my blush look orangey
Size: 1.8 Fl Oz (Pack of 1), Color: Original
I absolutely loved the feel and finish of this tinted sunscreen, but with or without my foundation on top of it, my Benefit Dandelion blush went from pink to a shade of orange. I have fair skin, blue eyes and strawberry blonde hair, which at this time of year is more strawberry than blonde. The orangey shade is definitely not my color. I was sad that this didn't work out, because the Colorscience made my skin look radiant really, until an hour or so after blush was applied. I so wanted a replacement for the Australian Gold Mineral sunscreen in original tint, because even though that tint looks great color-wise, it also makes my skin look dry and therefore accentuates my wrinkles, even when I mix it with Olay microsculpting cream moisturizer before I apply it. The Colorscience didn't accentuate the wrinkles. I feel certain this color issue is either a conflict with my Olay moisturizer, my own chemistry or the Benefit blush; maybe a combination of the three. If you have oily skin this sunscreen is moisturizing so it might not work for you. Otherwise, you may want to give this a try. Hate that I had to return it. No matter what, I've had a run-in with skin cancer, so I won't go without spf. I just have to keep looking ancient and dry with AG until I find one that works better for my coloring, skin type, and that plays well with my moisturizer and blush. I'm 62 yrs young, normal to dry combo skin. Hope this helps!
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Reviewed in the United States on March 20, 2022
★★★★★ 5
Brown skin friendly! No white cast! 🥳 Bye dark spots!
Size: 2.6 Fl Oz (Pack of 1), Size: 2.6 Fl Oz (Pack of 1)
Brown skin friendly! No white cast! 🥳
Colorescience comes through again! This is a fantastic sunscreen. It’s SPF 50 and it protects against blue light. So if you’re trying to get rid of hyperpigmentation, this will help you on your journey. I usually use tinted sunscreen for that reason but luckily, we have a non-tinted option with this! I use this primarily on my body because it doesn’t get stain clothing. But sometimes I use it on my face too, on its own or under a tinted formula. I like the light coverage for my face to even out my skin tone.
The texture is light and thin; reminds me of Tatcha silk screen but without the slight tint. This goes on white but somehow disappears into my skin. Also the price point is a better value, here. Even better when it’s on sale! I love Tatcha and use it regularly but I am happy to have this in my stash now. I had to get the big bottle when it was on sale. The formula is very elegant and leaves a natural finish. It spread and blends like a dream! It is so quick! You will NOT have to rub this in for 30 minutes to get it to blend. This physical sunscreen is a daily essential for me. It doesn’t burn my eyes or irritate my oily skin. It’s water resistant for 40 min, so it’s good for the summer heat.
But where are all the photos? Cause sometimes we need proof, right? Well, here is my contribution. I’m wearing this on my body (neck, chest, arms, legs, hands and feet).
* I reached out to Colorescience to ask about the effectiveness against UVA (aging) rays for this product. Other countries will usually mark this on a PA scale, the strongest protection being PA++++. But in the US, sunscreen isn’t required to specify how much; they are required to make sure it has at least the FDA “minimum” protection against UVA, and UVB (burning) rays and they have to label it “Broad Spectrum.” SPF is the protection level against UVB only. Colorescience has started to label some of their products with PA++++. Since this wasn’t labeled like that, I asked. They told me they recently completed testing and No-Show has earned the PA++++ rating. So they are in the process of updating the packaging. Colorescience knows what we want, even though the FDA is asleep at the wheel.
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Reviewed in the United States on June 2, 2025
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