PTFE Vacuum Grease | McMaster-Carr

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For Use On

Trade Name

Krytox™ 240AB Type II

Maximum Temperature

Maximum Vacuum @ Temperature

1× 10^-4 Torr @ 72° F

1× 10^-6 Torr @ 100° F

1× 10^-4 Torr @ 100° F

NLGI Consistency Grade

Melting Temperature

Container Size

Minimum Temperature

REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

RoHS

5 Products

High-Vacuum Seal and O-Ring Grease

Tube

A firm consistency and resistance to evaporation make this grease ideal for high-vacuum applications, such as flow meters, vacuum and pressure systems, and laboratory equipment. Apply directly to seals and O-rings to prevent drying and cracking.

Grease lubricates most efficiently below the maximum temperature.

Chemours—Chemours Krytox™ 240 grease is long lasting with an indefinite shelf life.

PTFE Thickener—Grease with PTFE thickener resists aggressive acids, bases, and solvents.

1 NLGI Grade—NLGI 1 is about the consistency of tomato paste.

2 NLGI Grade—NLGI 2 is about the consistency of peanut butter.

3 NLGI Grade—NLGI 3 is about the consistency of vegetable shortening and is comparable to Fomblin grease.

Nonmelting—Nonmelting grease can be used at temperatures above the maximum temperature briefly, but then will break down more quickly.

Melting Temperature—Melting temperature is the point at which grease will fail and run out of equipment, leaving it to run dry.

			Container		Temp., ° F
	NLGI Consistency Grade	Base Oil	Size, fl. oz.	Type	Min.	Max.	Melting Temp., ° F	Max. Vacuum @ Temp.	Color	Mil. Spec.		Each
Chemours Krytox™ 240AB Type II—PTFE Thickener



		2	Synthetic Oil	1/2	Tube	-40	450	Not Rated	1× 10^-6 Torr @ 100° F	White	MIL-PRF-27617	10195K21	000000


		2	Synthetic Oil	2	Tube	-40	450	Not Rated	1× 10^-6 Torr @ 100° F	White	MIL-PRF-27617	10195K63	000000


		Chemours Krytox™ 240AZ Type I—PTFE Thickener



				1	Synthetic Oil	1/2	Tube	-70	300	Nonmelting	1× 10^-4 Torr @ 100° F	White	MIL-PRF-27617	10195K18	00000


				1	Synthetic Oil	2	Tube	-70	300	Nonmelting	1× 10^-4 Torr @ 100° F	White	MIL-PRF-27617	10195K61	000000


				PTFE Thickener



						3	Synthetic Oil	3 1/2	Tube	0	480	525	1× 10^-4 Torr @ 72° F	White	—	1326K59	000000