Sealants For Oxygen | McMaster-Carr

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Water-Based Paint and Coatings

Gasoline (Up to 10% Ethanol)

Methyl Ethyl Ketone (MEK)

Sodium Bicarbonate (Baking Soda)

Sodium Chloride

Sodium Hydroxide (Caustic Soda)

Sodium Hypochlorite (Bleach)

For Use On

Container Type

Applicator-Top Bottle

Color

Environment

System of Measurement

Maximum Temperature

Width

For Joining

Type

For Maximum Thread Diameter

For Use Outdoors

Formulation

Viton® Fluoroelastomer

Maximum Pressure for Gases

Material

Performance

Minimum Temperature

Mixing Required

Hardness Rating

Food Industry Standard

REACH

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RoHS

Export Control Classification Number (ECCN)

EAR99

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

Yes

DFARS Specialty Metals

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67 Products

Chemical-Resistant Sealants

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

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

	Container								Temp., ° F
	Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, day	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength, psi	Hardness Rating	Min.	Max.	For Joining	Color (Clarity)		Each
Viton® Fluoroelastomer



		2.5	Cartridge	5	3	300%	-25% to 25%	700	Medium Hard (Durometer 65A)	-40	400	Masonry Metal	Black (Opaque)	77495A31	000000


		11	Cartridge	5	3	300%	-25% to 25%	700	Medium Hard (Durometer 65A)	-40	400	Masonry Metal	Black (Opaque)	77495A32	000000


		Aflas



				11	Cartridge	5	3	250%	-15% to 15%	1,000	Medium Hard (Durometer 65A)	-40	400	Masonry Metal	Black (Opaque)	7238N11	000000

Self-Leveling Chemical-Resistant Sealants


Cartridge	Can

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.

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

	Container								Temp., ° F
	Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, day	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength, psi	Hardness Rating	Min.	Max.	For Joining	Color (Clarity)	Cannot Be Sold To	Includes		Each
Fluoroelastomer



		32	Can	5	3	150%	-5% to 5%	600	Hard (Durometer 85A)	-40	400	Masonry Metal	Gray (Opaque)	—	1 3/4-oz. Bottle of Sealant	77495A21	0000000


		32	Can	5	3	450%	-15% to 15%	750	Medium Hard (Durometer 65A)	-40	400	Masonry Metal	Gray (Opaque)	Los Angeles County, CA Orange County, CA Riverside County, CA San Bernardino County, CA	1 1/2-oz. Bottle of Sealant	77495A23	000000


		Viton® Fluoroelastomer



				2.5	Cartridge	5	3	400%	-25% to 25%	1,000	Medium Hard (Durometer 60A)	-40	400	Masonry Metal	Black (Opaque)	—	—	77495A15	00000


				11	Cartridge	5	3	400%	-25% to 25%	1,000	Medium Hard (Durometer 60A)	-40	400	Masonry Metal	Black (Opaque)	—	—	77495A16	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		Temp., ° F
	Size, fl. oz.	Type	For Fluids	For Gases	Min.	Max.	For Max. Thread Dia.	Consistency	Food Industry Std.	Choose a Color		Each
Low Locking Strength



		2	Applicator-Top Bottle	10,000	300	-65	300	4"	Thick Liquid	NSF/ANSI 61	White, Orange	4592K2	000000

Thread Sealant Tape

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

ePTFE with Graphite—ePTFE 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
	Wd.	Lg., yd.	Density, g/cm³	For Fluids	For Gases	Temp. Range, ° F	For Max. Thread Dia.	Food Industry Std.	Certification	Mil. Spec.	Color		Each
PTFE







				0.0025" Thick

				1/4"	16	0.55	10,000	10,000	-450 to 550	1/2"	FDA Compliant 21 CFR 177.1550	UL Listed	—	White	4591K11	00000


				3/8"	16	0.55	10,000	10,000	-450 to 550	1"	FDA Compliant 21 CFR 177.1550	UL Listed	—	White	4591K18	0000
				1/2"	16	0.55	10,000	10,000	-450 to 550	1"	FDA Compliant 21 CFR 177.1550	UL Listed	—	White	4591K12	0000
				3/4"	16	0.55	10,000	10,000	-450 to 550	1 1/2"	FDA Compliant 21 CFR 177.1550	UL Listed	—	White	4591K13	0000
				1"	16	0.55	10,000	10,000	-450 to 550	1 1/2"	FDA Compliant 21 CFR 177.1550	UL Listed	—	White	4591K14	0000




						0.0032" Thick

						1/4"	14	0.7	10,000	10,000	-450 to 550	1/2"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K11	0000


						3/8"	14	0.7	10,000	10,000	-450 to 550	3/4"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K18	0000
						1/2"	14	0.7	10,000	10,000	-450 to 550	1"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K12	0000
						3/4"	14	0.7	10,000	10,000	-450 to 550	1 1/2"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K13	0000
						1"	14	0.7	10,000	10,000	-450 to 550	2"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K14	0000
						1 1/2"	14	0.7	10,000	10,000	-450 to 550	3"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K15	0000
						2"	14	0.7	10,000	10,000	-450 to 550	4"	FDA Compliant 21 CFR 177.1550	Mil. Spec. UL Listed	MIL-T-27730	White	6802K16	00000


						ePTFE with Graphite







										0.0020" Thick

										5/8"	27	0.8	2,900	2,900	-400 to 500	1 1/4"	—	—	—	Gray	6802K25	00000

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.	Food Industry Std.	Certification	Mil. Spec.	Color		1-11	12-Up
PTFE







				0.0032" Thick

				1/4"	14	1.2	10,000	10,000	-450 to 550	1/2"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A11	00000	00000


				1/4"	14	1.2	10,000	10,000	-450 to 550	1/2"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K22	0000	0000
				3/8"	14	1.2	10,000	10,000	-450 to 550	3/4"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A16	0000	0000
				3/8"	14	1.2	10,000	10,000	-450 to 550	3/4"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K19	0000	0000
				1/2"	14	1.2	10,000	10,000	-450 to 550	1"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A12	0000	0000
				1/2"	14	1.2	10,000	10,000	-450 to 550	1"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K33	0000	0000
				3/4"	14	1.2	10,000	10,000	-450 to 550	1 1/2"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A13	0000	0000
				3/4"	14	1.2	10,000	10,000	-450 to 550	1 1/2"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K44	0000	0000
				1"	14	1.2	10,000	10,000	-450 to 550	2"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A14	0000	0000
				1"	14	1.2	10,000	10,000	-450 to 550	2"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K55	00000	0000
				1 1/2"	14	1.2	10,000	10,000	-450 to 550	3"	—	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Gray	7346A15	00000	00000


				1 1/2"	14	1.2	10,000	10,000	-450 to 550	3"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K66	00000	00000
				2"	14	1.2	10,000	10,000	-450 to 550	4"	FDA Compliant 21 CFR 177.1550	C-UL Listed Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K77	00000	00000




						0.0035" Thick

						1/4"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K81	00000	0000


						3/8"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K82	00000	00000
						1/2"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K83	00000	00000
						3/4"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K84	00000	00000
						1"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K85	00000	00000
						1 1/2"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K86	00000	00000
						2"	14	1.9	10,000	10,800	-450 to 550	6"	FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.2600	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	White	6802K87	00000	00000


						Nickel-Filled PTFE







										0.0035" Thick

										1/4"	14	1.4	10,000	10,000	-450 to 550	1/2"	—	C-UL Listed UL Listed	—	Gray	7346A211	00000	00000


										3/8"	14	1.4	10,000	10,000	-450 to 550	3/4"	—	C-UL Listed UL Listed	—	Gray	7346A212	00000	00000
										1/2"	14	1.4	10,000	10,000	-450 to 550	1"	—	C-UL Listed UL Listed	—	Gray	7346A213	00000	00000
										3/4"	14	1.4	10,000	10,000	-450 to 550	1 1/2"	—	C-UL Listed UL Listed	—	Gray	7346A214	00000	00000
										1"	14	1.4	10,000	10,000	-450 to 550	2"	—	C-UL Listed UL Listed	—	Gray	7346A215	00000	00000




0.0040" 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	6802K88	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	6802K89	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	6802K91	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	6802K92	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	6802K93	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	6802K95	00000	00000

Thread Sealants for Oxygen Systems


Tube	Jar

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.

Tube—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		Temp., ° F
	Size, fl. oz.	Type	For Fluids	For Gases	Min.	Max.	Max. Temp. for Oxygen, ° F	For Max. Thread Dia.	Consistency	Certification	Mil. Spec.	Color		Each
Low Locking Strength



		3.5	Tube	10,000	10,000	-400	500	140	6"	Paste	—	—	White	4538K1	000000


		3.5	Jar	10,000	10,000	-450	550	140	6"	Paste	Mil. Spec.	MIL-PRF-27617	Green	4538K6	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		Temp., ° F
	Size, fl. oz.	Type	For Fluids	For Gases	Min.	Max.	For Max. Thread Dia.	Consistency	Food Industry Std.	Choose a Color		Each
Low Locking Strength



		2	Applicator-Top Bottle	10,000	300	-65	300	4"	Thick Liquid	NSF/ANSI 61	White, Orange	4592K3	000000

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—Green tape is often used for oxygen.

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

Red—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.	Certification	Mil. Spec.	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. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K11	00000	00000


				3/8"	14	1.2	10,000	10,000	-450 to 550	3/4"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K17	0000	0000
				1/2"	14	1.2	10,000	10,000	-450 to 550	1"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K12	0000	0000
				3/4"	14	1.2	10,000	10,000	-450 to 550	1 1/2"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K13	0000	0000
				1"	14	1.2	10,000	10,000	-450 to 550	2"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K14	00000	0000
				1 1/2"	14	1.2	10,000	10,000	-450 to 550	3"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K15	00000	00000
				2"	14	1.2	10,000	10,000	-450 to 550	4"	Mil. Spec. UL Listed	Fed. Spec. A-A-58092 Type II MIL-T-27730	Green, Orange, Red, Yellow	44945K16	00000	00000

Non-Hardening High-Temperature Thread Sealants

Tube

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. Pressure, psi		Temp.
	Size, fl. oz.	Type	For Fluids	For Gases	Min.	Max., ° F	For Max. Thread Dia.	Consistency	Color		Each
Low Locking Strength



		4.4	Tube	2,300	2,300	Not Rated	1,100	2"	Paste	Black	1965K1	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—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.

1,000° F Maximum Temperature—1000° F max. temp. sealants expand as they harden.

1,500° F Maximum Temperature—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		Temp., ° F
	Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Mix Ratio	For Fluids	For Gases	Min.	Max.	For Max. Thread Dia.	Consistency	Food Industry Std.	For Use On	Color		Each
High Locking Strength







				Room Temperature Cure X-Pando

				14	Can	60	24	5:1	5,000	5,000	-300	1,000	6"	Powder	NSF/ANSI 61	Aluminum, Brass, Bronze, Cast Iron, Copper, Stainless Steel, Steel	Gray	6818K11	000000


				14	Can	60	24	5:1	5,000	5,000	-300	1,500	6"	Powder	NSF/ANSI 61	Aluminum, Steel	Gray	6818K24	00000
				70	Can	60	24	5:1	5,000	5,000	-300	1,000	6"	Powder	NSF/ANSI 61	Aluminum, Brass, Bronze, Cast Iron, Copper, Stainless Steel, Steel	Gray	6818K12	00000
				70	Can	60	24	5:1	5,000	5,000	-300	1,500	6"	Powder	NSF/ANSI 61	Aluminum, Steel	Gray	6818K26	00000