SKU: 48793410305

CHRISTO-LUBE MCG 111 Oxygen Compatible Grease

Sale price$23.40 Regular price$26.00
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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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:
  1. 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
SKU: 48793410305

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4.3 ★★★★★
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ashlynnk
Lexington, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
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Reviewed in the United States on March 17, 2026
A
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Abby B
Battle Creek, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
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Reviewed in the United States on March 7, 2026
E
Verified Purchase
EE
Carnegie, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
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Reviewed in the United States on May 17, 2026
K
Verified Purchase
Kate
Belleville, US
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days. Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
T
Verified Purchase
Tami
Bozeman, US
★★★★★ 5
Excellent quality!!!
Size: 10, Color: Ocean Breeze
Wow great quality!!! You get what you pay for that’s for sure!! The fabric is heavy-ish-indicative of quality fabric. Fit is spot on. I’m a barely size 10 (5’6” 160 lbs) and these shorts deliver!! The stretch is just perfect enough for comfort. Excited to wear these next summer!! Will watch for more sales so I can grab a couple more pairs. If you’re on the fence, get them!!
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Reviewed in the United States on December 4, 2025

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