Sealants For Oxygen | McMaster-Carr

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For Use With

Water-Based Paint and Coatings

Abietic Acid

Acetic Acid (White Vinegar)

Gasoline (Up to 10% Ethanol)

Methanol (Methyl Alcohol)

Methyl Ethyl Ketone (MEK)

Sodium Bicarbonate (Baking Soda)

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Sodium Hydroxide (Caustic Soda) (3-6% Concentration)

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For Use On

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Applicator-Top Bottle

Color

System of Measurement

Maximum Temperature

For Maximum Thread Diameter

Width

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Maximum Pressure for Gases

Food Industry Standard

For Joining

Cure Type

Maximum Pressure for Fluids

1,000 psi to 9,999 psi

10,000 psi to 10,999 psi

Type

Container Size

Mixing Required

Material

Performance

For Use Outdoors

Formulation

Viton® Fluoroelastomer

REACH

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Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

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63 Products

About Sealant Flexibility

Designed to withstand extreme environments, these fluoroelastomer sealants have excellent resistance to harsh chemicals. They’re non-sagging, so they won't drip from vertical and overhead surfaces.

Elongation and joint expansion/compression tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. These sealants are best suited to joints between similar materials that aren't exposed to wide temperature fluctuation.

Viton® fluoroelastomer sealants resist sulfuric acid, hydrochloric acid, nitric acid, gasoline, fuels, and crude oil.

Aflas fluoroelastomer sealants stand up to hydroxides, industrial cleaning fluids, and other pH-basic chemicals in applications where traditional rubber caulk is ineffective.

Container
Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Elongation	Joint Compression/ Expansion Tolerance	Tensile Strength, psi	Hardness	Temp. Range, °F	For Joining	Color		Each
Viton® Fluoroelastomer
2.5	Cartridge	5 min.	3 days	300%	-25% to 25%	700	Medium Hard (Durometer 65A)	-40° to 400°	Metal, Masonry	Black	00000000	000000
11	Cartridge	5 min.	3 days	300%	-25% to 25%	700	Medium Hard (Durometer 65A)	-40° to 400°	Metal, Masonry	Black	00000000	000000
Aflas Fluoroelastomer
11	Cartridge	5 min.	3 days	250%	-15% to 15%	1,000	Medium Hard (Durometer 65A)	-40° to 400°	Metal, Masonry	Black	0000000	000000

Self-Leveling Chemical-Resistant Sealants

Designed to withstand extreme environments, these fluoroelastomer sealants have excellent resistance to sulfuric acid, hydrochloric acid, nitric acid, gasoline, and oil. Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish.

Sealants that cannot be sold to the regions listed exceed local regulatory limits on VOCs (volatile organic compounds).

Container
Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Elongation	Joint Compression/ Expansion Tolerance	Tensile Strength, psi	Hardness	Temp. Range, °F	Color	For Joining	Cannot Be Sold To		Each
Fluoroelastomer
32	Can	5 min.	3 days	150%	-5% to 5%	600	Hard (Durometer 85A)	-40° to 400°	Gray	Metal, Masonry	__	00000000	0000000
32	Can	5 min.	3 days	450%	-15% to 15%	750	Medium Hard (Durometer 65A)	-40° to 400°	Gray	Metal, Masonry	Los Angeles County, CA; Orange County, CA; Riverside County, CA; San Bernardino County, CA	00000000	000000
Viton® Fluoroelastomer
2.5	Cartridge	5 min.	3 days	400%	-25% to 25%	1,000	Medium Hard (Durometer 60A)	-40° to 400°	Black	Metal, Masonry	__	00000000	00000
11	Cartridge	5 min.	3 days	400%	-25% to 25%	1,000	Medium Hard (Durometer 60A)	-40° to 400°	Black	Metal, Masonry	__	00000000	000000

Reusable Non-Hardening Thread Sealants for Coarse Threads

Much thicker than sealants for fine threads, these sealants bridge the gaps between coarse threads. Threads coated with these sealants can be installed multiple times without recoating. They have low locking strength, so they prevent threads from loosening due to vibration and can be adjusted without tools. They meet NSF/ANSI 61 for use with drinking water.

Container		Max. Pressure, psi
Size, fl. oz.	Type	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Consistency	Specifications Met	Choose a Color		Each
Low Locking Strength
2	Brush-Top Bottle	10,000	300	-65° to 300°	4"	Thick Liquid	NSF/ANSI 61	Orange, White	000000	000000

Reusable Non-Hardening Thread Sealants for Fine Threads

Formulated to flow into small spaces, use these sealants between fine threads. Threads coated with these sealants can be installed multiple times without recoating. They have low locking strength, so they prevent threads from loosening due to vibration and can be adjusted without tools. They meet NSF/ANSI 61 for use with drinking water.

Container		Max. Pressure, psi
Size, fl. oz.	Type	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Consistency	Specifications Met	Choose a Color		Each
Low Locking Strength
2	Brush-Top Bottle	10,000	300	-65° to 300°	4"	Thick Liquid	NSF/ANSI 61	Orange, White	000000	000000

High-Temperature Thread Sealants

These sealants have high locking strength, so they work in demanding applications, such as securing mounting studs in motor housings. They also withstand applications with large temperature swings.

Room-temperature cure sealants must be mixed with water for use; they harden as the water evaporates. Mix about five parts powdered-sealant to one part water to form a thick consistency similar to peanut butter. Hardening can be accelerated with heat; do not heat to above 200° F. They require a hand tool to unthread.

1000° F max. temp. sealants expand as they harden.

1500° F max. temp. sealants are for use on cement-lined pipe joints prior to welding. The heat from the welding torch helps them begin to harden.

Container					Max. Pressure, psi
Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Mix Ratio	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Consistency	Specifications Met	For Use On	Color		Each
High Locking Strength
Room-Temperature Cure X-Pando Sealants
14	Can	60 min.	24 hrs.	5:1	5,000	5,000	-300° to 1000°	6"	Powder	NSF/ANSI 61	Aluminum, Brass, Bronze, Copper, Stainless Steel, Steel, Cast Iron	Gray	0000000	000000
14	Can	60 min.	24 hrs.	5:1	5,000	5,000	-300° to 1500°	6"	Powder	NSF/ANSI 61	Aluminum, Steel	Gray	0000000	00000
70	Can	60 min.	24 hrs.	5:1	5,000	5,000	-300° to 1000°	6"	Powder	NSF/ANSI 61	Aluminum, Brass, Bronze, Copper, Stainless Steel, Steel, Cast Iron	Gray	0000000	00000
70	Can	60 min.	24 hrs.	5:1	5,000	5,000	-300° to 1500°	6"	Powder	NSF/ANSI 61	Aluminum, Steel	Gray	0000000	00000

Non-Hardening High-Temperature Thread Sealants

Often used in high-vibration applications that could cause standard thread sealants to fail, these never fully harden and remain pliable enough to self-heal and stop leaks before they start. They have low locking strength, so they can be adjusted without tools.

Container		Max. Pressue, psi
Size, fl. oz.	Type	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Consistency	Color		Each
Low Locking Strength
Sealants
4.4	Tube	2,300	2,300	Not Rated to 1100°	2"	Paste	Black	000000	000000

Thread Sealants for Oxygen Systems

Completely free of oil and chemically inert, these sealants are safe to use with wet and dry oxygen systems. They contain PTFE, which provides a slippery surface that keeps threads from binding. These sealants are non-hardening, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools.

The sealant in a tube is a good alternative to thread sealant tape—like tape, it forms PTFE strings between tightened threads, but excess material liquefies, so it won’t clog system components downstream.

Container		Max. Pressure, psi
Size, fl. oz.	Type	For Fluids	For Gases	Temp. Range, °F	Max. Temp. for Oxygen, °F	For Max. Thread Dia.	Consistency	Color		Each
Low Locking Strength
3.5	Tube	10,000	10,000	-400° to 500°	140°	6"	Paste	White	000000	000000
3.5	Jar	10,000	10,000	-450° to 550°	140°	6"	Paste	Green	000000	000000

Thread Sealant Tape

Made of PTFE, this tape has a slippery surface that keeps threads from binding to make parts easy to assemble.

PTFE tape with graphite creates a better seal between threads than plain PTFE tape, which helps prevent fluid and gas leaks. The graphite attaches to the PTFE, so this tape does not emit harmful VOCs.

			Max. Pressure, psi
Mfr. Model No.	Wd.	Lg., yd.	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Color		Each
3M PTFE
0.003" Thick.
547	3/8"	36	Not Rated	Not Rated	-40° to 170°	6"	White	0000000	000000

			Max. Pressure, psi							Each
Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Specifications Met	Color		1-11	12-Up
PTFE
0.0032" Thick.
1/4"	14	0.7	10,000	10,000	-450° to 550°	1/2"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	00000	00000
3/8"	14	0.7	10,000	10,000	-450° to 550°	3/4"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	0000	0000
1/2"	14	0.7	10,000	10,000	-450° to 550°	1"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	0000	0000
3/4"	14	0.7	10,000	10,000	-450° to 550°	1 1/2"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	0000	0000
1"	14	0.7	10,000	10,000	-450° to 550°	2"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	0000	0000
1 1/2"	14	0.7	10,000	10,000	-450° to 550°	3"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	0000	0000
2"	14	0.7	10,000	10,000	-450° to 550°	4"	FDA Compliant 21 CFR 177.1550, MIL-T-27730, UL Listed	White	0000000	00000	00000

			Max. Pressure, psi
Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Color		Each
ePTFE with Graphite
0.002" Thick.
5/8"	27	0.8	2,900	2,900	-400° to 500°	1 1/4"	Gray	0000000	000000

High-Density Thread Sealant Tape

This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.

			Max. Pressure, psi							Each
Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Specifications Met	Color		1-11	12-Up
PTFE
0.0032" Thick.
1/4"	14	1.2	10,000	10,000	-450° to 550°	1/2"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
1/4"	14	1.2	10,000	10,000	-450° to 550°	1/2"	MIL-T-27730 UL Listed C-UL Listed MIL-A-A-58092 Type II	Gray	0000000	0000	0000
3/8"	14	1.2	10,000	10,000	-450° to 550°	3/4"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	0000	0000
3/8"	14	1.2	10,000	10,000	-450° to 550°	3/4"	MIL-T-27730 UL Listed C-UL Listed MIL-A-A-58092 Type II	Gray	0000000	0000	0000
1/2"	14	1.2	10,000	10,000	-450° to 550°	1"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	0000	0000
1/2"	14	1.2	10,000	10,000	-450° to 550°	1"	MIL-T-27730 UL Listed C-UL Listed MIL-A-A-58092 Type II	Gray	0000000	0000	0000
3/4"	14	1.2	10,000	10,000	-450° to 550°	1 1/2"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	0000	0000
3/4"	14	1.2	10,000	10,000	-450° to 550°	1 1/2"	MIL-T-27730 UL Listed C-UL Listed MIL-A-A-58092 Type II	Gray	0000000	0000	0000
1"	14	1.2	10,000	10,000	-450° to 550°	2"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	00000	0000
1"	14	1.2	10,000	10,000	-450° to 550°	2"	MIL-T-27730 UL Listed C-UL Listed MIL-A-A-58092 Type II	Gray	0000000	00000	00000
1 1/2"	14	1.2	10,000	10,000	-450° to 550°	3"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
1 1/2"	14	1.2	10,000	10,000	-450° to 550°	3"	MIL-T-27730 UL Listed C-UL Listed MIL-A-A-58092 Type II	Gray	0000000	00000	00000
2"	14	1.2	10,000	10,000	-450° to 550°	4"	MIL-T-27730 FDA Compliant 21 CFR 177.1550 UL Listed C-UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
0.0035" Thick.
1/4"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	0000
3/8"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
1/2"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
3/4"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
1"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
1 1/2"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000
2"	14	1.9	10,000	10,800	-450° to 550°	6"	MIL-T-27730 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed MIL-A-A-58092 Type II	White	0000000	00000	00000

			Max. Pressure, psi							Each
Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Specifications Met	Color		1-11	12-Up
PTFE with Nickel Filler
0.0035" Thick.
1/4"	14	1.4	10,000	10,000	-450° to 550°	1/2"	UL Listed C-UL Listed	Gray	00000000	00000	00000
3/8"	14	1.4	10,000	10,000	-450° to 550°	3/4"	UL Listed C-UL Listed	Gray	00000000	00000	0000
1/2"	14	1.4	10,000	10,000	-450° to 550°	1"	UL Listed C-UL Listed	Gray	00000000	00000	0000
3/4"	14	1.4	10,000	10,000	-450° to 550°	1 1/2"	UL Listed C-UL Listed	Gray	00000000	00000	00000
1"	14	1.4	10,000	10,000	-450° to 550°	2"	UL Listed C-UL Listed	Gray	00000000	00000	00000
0.004" Thick.
1/4"	14	1.9	10,500	11,500	-450° to 550°	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed	White	0000000	00000	00000
3/8"	14	1.9	10,500	11,500	-450° to 550°	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed	White	0000000	00000	00000
1/2"	14	1.9	10,500	11,500	-450° to 550°	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed	White	0000000	00000	00000
3/4"	14	1.9	10,500	11,500	-450° to 550°	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed	White	0000000	00000	00000
1"	14	1.9	10,500	11,500	-450° to 550°	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed	White	0000000	00000	00000
2"	14	1.9	10,500	11,500	-450° to 550°	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600 UL Listed	White	0000000	00000	00000

Choose-a-Color High-Density Thread Sealant Tape

Use color to identify water, gas, and chemical connections. This tape has a higher density than standard tape for a better seal between threads. Made of PTFE, it has a slippery surface that keeps threads from binding to make parts easy to assemble.

Green tape is often used for oxygen.

Orange and yellow tape is commonly used to indicate fuel and gas.

Red tape is often used for water.

			Max. Pressure, psi							Each
Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, °F	For Max. Thread Dia.	Specifications Met	Choose a Color		1-11	12-Up
PTFE
0.0032" Thick.
1/4"	14	1.2	10,000	10,000	-450° to 550°	1/2"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	00000	00000
3/8"	14	1.2	10,000	10,000	-450° to 550°	3/4"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	0000	0000
1/2"	14	1.2	10,000	10,000	-450° to 550°	1"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	0000	0000
3/4"	14	1.2	10,000	10,000	-450° to 550°	1 1/2"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	0000	0000
1"	14	1.2	10,000	10,000	-450° to 550°	2"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	00000	0000
1 1/2"	14	1.2	10,000	10,000	-450° to 550°	3"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	00000	00000
2"	14	1.2	10,000	10,000	-450° to 550°	4"	MIL-A-A-58092 Type II MIL-T-27730 UL Listed	Green, Orange, Red, Yellow	00000000	00000	00000