Torr Epoxies | McMaster-Carr

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Reaches Full Strength

Container Type

Formulation

For Joining

Maximum Vacuum @ Temperature

1× 10^-9 Torr @ 72° F

1× 10^-4 Torr @ 72° F

Mixing Required

For Use On

Begins to Harden

Minimum Temperature

Hardness

Relative Vacuum Rating

Color

Tensile Strength

REACH

RoHS

Maximum Temperature

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Hardness Rating

Paintable

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5 Products

About Sealant Flexibility

Vacuum Leak Sealants

Seal leaks on vacuum systems and components.

Epoxy resin sealants, also known as Torr Seals, form a rigid bond.

Bentonite/petrolatum sealants, also known as Apiezon sealants, form a flexible, non-hardening seal that’s easy to remove and reposition.

Sealants

Container
Size	Type	Begins to Harden	Reaches Full Strength	Vacuum Rating, torr	Maximum Vacuum @ Temperature	Tensile Strength, psi	Hardness	Mix Ratio	Temp. Range, °F	For Joining	Color		Each
Epoxy Resin
1.7 fl. oz.	Cartridge	60 min.	3 days	Ultra High	10 ^-9 torr @ 72° F	5,000	Extra Hard (Durometer 75D)	2:1	-45° to 245°	Metal, Glass, Masonry	Off-White	0000000	0000000
4.2 fl. oz.	Tube	60 min.	3 days	Ultra High	10 ^-9 torr @ 72° F	5,000	Extra Hard (Durometer 75D)	2:1	-45° to 245°	Metal, Glass, Masonry	Off-White	0000000	000000
Bentonite/Petrolatum
2.2 lbs.	Can	5 min.	1 hrs.	High	10 ^-4 torr @ 72° F	Not Rated	Not Rated	__	15° to 85°	Metal, Plastic, Glass	Gray	0000000	000000

Sealants with Dispensing Gun

Container
Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Vacuum Rating, torr	Maximum Vacuum @ Temperature	Tensile Strength, psi	Hardness	Mix Ratio	Temp. Range, °F	For Joining	Color		Each
Epoxy Resin
1.7	Cartridge	60 min.	3 days	Ultra High	10 ^-9 torr @ 72° F	5,000	Extra Hard (Durometer 75D)	2:1	-45° to 245°	Metal, Glass, Masonry	Off-White	0000000	0000000

Dispensing Gun

Loading Method	For Cartridge Size	Material		Each
Cartridge	1.7 oz.	Plastic	0000000	0000000