Sealants/Lubricants

SPECIALTY SEALANTS/LUBRICANTS FOR VACUUM

Huntington offers sealants featuring a low vapor-pressure epoxy resin sealant and an alternative silicone resin sealant with near zero contamination from out-gassing. Industry specific lubricants like high vacuum greases and anti-seize compounds to keep threaded fasteners from sticking.

Loctite® Epoxi-Patch® Leak Sealant Kit

Description	Size	Part Number	Schematic
Loctite® Epoxi-Patch® Kit	4 OZ. Tube	VS-101

Huntington offers a low-vapor-pressure resin sealant for sealing leaks in any type of vacuum system. Useful to 1 x 10-9 Torr, this sealant hardens at room temperature in one to two hours, forming a strong bond with glass, metal, or ceramic. Tests for leakage can be made immediately after application. Once the material is cured or hardened, it is reliable for long-term use since it contains no solvents that will evaporate. It is packaged in separate tubes of base and hardener. The maximum bakeout temperature for this material is 125° C.

Celvaseal® Leak Sealant

Description	Size	Part Number	Schematic
Celvaseal® Leak Sealant	3 OZ. Bottle	VS-302-B
	16 OZ. Aerosol Can	VS-302-A

Celvaseal is a silicone resin used primarily for sealing leaks in ultra-high vacuum systems. At 50 degrees Celsius the weight loss after 175 hours in vacuum is only 0.000005 grams/cm2 compared to 0.01 grams/cm2 for epoxy compounds. Residual gas analysis indicates no evidence of hydrocarbons or other contamination arising from Celvaseal used on systems capable of ultimate pressures of 1×10-12 Torr. Celvaseal can withstand repeated temperature cycling from -200°C to 450°C over long intervals of time. Available in both 6 oz. aerosol cans and 2 oz. brush-on bottles, Celvaseal will seal leaks as large as 2 micron liters per seconds. Celvaseal is also useful as a cement for sealing all kinds of optical windows and Brewster windows for lasers. Due to shelf life limitations the 16 oz. aerosol cans are available by special order only.

Apiezon® Vacuum Grease

Type	Vapor Press. 20° C	Melting Point	Viscosity 50° C	Molec. Wgt.	Part Number	Schematic
L-Type	8 x 10 Torr	47° C	766 cp	1300	C-300-L
M-Type	2 x 10 Torr	44° C	413 cp	950	C-300-M

Hydrocarbon base allows for easy cleaning with common solvents.

Krytox® Vacuum Grease

Description	Size	Part Number	Schematic
Krytox® LVP High-Vacuum Grease	2 OZ. Tube	C-250-02

Krytox® LVP High-Vacuum Grease is made with low-vapor-pressure fluorinated oils to withstand higher temperatures for longer periods of time. It provides superior lubricating and sealing characteristics under severe operating conditions. It can be used for all vacuum system components and accessories including vacuum chamber applications, and any application that requires low vapor pressure (to 10-13 HG) and extremely high temperatures (to 570° F).

Silicone Vacuum Grease

Description	Size	Part Number	Schematic
Dow Corning® High Vacuum Grease	5 OZ. Tube	C-200-05

Dow Corning® High Vacuum Grease is a stiff, non-melting silicone lubricating material that maintains its consistency from -40°C to 260°C. Important features of this high vacuum grease include good lubricating and sealing ability, low volatility, and excellent resistance to water, chemicals, high and low temperatures.

Anti-Seize Lubricant

Description	Size	Part Number	Schematic
Loctite® 51609	1 OZ. Tube	C-609-01
	9 OZ. Can	C-609-09

Loctite® 51609 is a high temperature lubricant designed to speed assembly and disassembly of all types of mated parts. Containing a molybdenum disulfide base, Loctite® 51609 prevents seizing and galling in a temperature range of – 129°C to 131°C and can be used on cast iron, stainless steel, titanium, brass, copper aluminum, plastic, and nonmetallic gaskets.