HVAC Sealants

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Fluorescent Blue/Green

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Begins to Harden

Reaches Full Strength

24 hr.

48 hr.

DFARS Specialty Metals

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60 Products

Form flexible water-resistant seals on metal, plastic, and rubber joints in heating, ventilation, air conditioning, and refrigeration applications. These sealants are non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone rubber, sealants are RTV (room-temperature vulcanizing).

Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain.

Dow Silicone Rubber

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength, psi	Hardness Rating	Temp. Range, ° F	Certification	Food Industry Std.	Flammability Rating	For Joining	Choose a Color (Clarity)		Each
10.3	Cartridge	5	24	600%	-25% to 25%	325	Soft (Durometer 27A)	-40 to 350	UL Listed	FDA Compliant 21 CFR 177.2600	UL 94 HB	Composite Metal Plastic Rubber Metal to Composite Metal to Plastic Metal to Rubber	Aluminum, Clear, White (Semi-Clear)	1919N3	000000

Sealant Primers

		Each
PR-1200 Primer for Dow 700, 732, 733, 734, 736, 737, 739, 786, 995, Loctite®, 76435T21, 76435T11, 7545A611 and 1919N3 Sealants (10.9 fl. oz. Bottle)	7442A23	000000

Silicone Rubber

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength	Hardness Rating	Temp. Range, ° F	Mil. Spec.	For Joining	Choose a Color (Clarity)		Each
9.4	Cartridge	20	24	Not Rated	-25% to 25%	Not Rated	Soft (Durometer 26A)	-60 to 400	Fed. Spec. TT-S-00230 Fed. Spec. TT-S-001543 Class A	Composite Metal Plastic Rubber Metal to Composite Metal to Plastic Metal to Rubber	Clear (Clear), Gray (Opaque), White (Opaque)	1919N16	00000

Metal Duct HVAC Sealants


Cartridge	Pail

Seal metal-to-metal joints in ductwork. These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.

	Container								Temp., ° F
	Size	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength	Hardness Rating	Min.	Max.	For Joining	Color (Clarity)		Each
Acrylic Plastic



		10.1 fl. oz.	Cartridge	15	48	Not Rated	Not Rated	Not Rated	Soft (Durometer 20A)	-40	200	Metal	Gray (Opaque)	73335A65	00000


		1 gal.	Pail	15	48	Not Rated	Not Rated	Not Rated	Soft (Durometer 20A)	-40	200	Metal	Gray (Opaque)	73335A66	00000

Foil HVAC Tape


No Liner	With Liner

Seal foil-jacketed insulation as well as air-conditioning and refrigeration systems with this conformable aluminum tape.

Acrylic Plastic Adhesive—Tape with acrylic plastic adhesive withstands higher temperatures than tape with rubber adhesive.

Silicone Adhesive—Tape with silicone adhesive stands up to the widest temperature range.

	Overall Thk.	Temp. Range, ° F	Tensile Strength, lbf/in. wd.	Adhesion to Steel, ozf/in. wd.	Liner Type	Specs. Met	Mil. Spec.	Color	Lg., ft.		Each
Rubber Adhesive



	2"	0.004"	40 to 180	10	100	Paper	—	—	Silver	150	76145A61	000000


	3"	0.004"	40 to 180	10	100	Paper	—	—	Silver	150	76145A62	00000


	Acrylic Plastic Adhesive



			1"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	15	7631A71	0000


			1"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	180	7631A31	00000
			1"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	15	7631A81	0000
			1"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	180	7631A19	00000
			1"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	15	7631A91	0000
			1"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	180	7631A41	00000
			2"	0.0027"	-40 to 250	15	95	Paper	—	—	Silver	150	7616A21	00000
			2"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	15	7631A72	0000
			2"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	180	7631A32	00000
			2"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	15	7631A82	0000
			2"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	180	7631A21	00000


			2"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	15	7631A92	00000
			2"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	180	7631A42	00000
			2 1/2"	0.0032"	-40 to 250	21	51	Paper	—	—	Silver	150	7616A25	00000
			3"	0.0027"	-40 to 250	15	95	Paper	—	—	Silver	150	7616A31	00000
			3"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	15	7631A73	0000
			3"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	180	7631A33	00000
			3"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	15	7631A83	00000
			3"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	180	7631A23	00000
			3"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	15	7631A93	00000
			3"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	180	7631A43	000000


			4"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	15	7631A34	00000
			4"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	180	7631A94	00000
			4"	0.0032"	-40 to 260	21	51	Plastic	—	—	Silver	150	7616A26	00000
			4"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	15	7631A84	00000
			4"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	180	7631A24	00000
			4"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	15	7631A44	00000
			4"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	180	7631A95	000000
			6"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	15	7631A61	00000
			6"	0.003"	-30 to 325	10	Not Rated	No Liner	—	—	Silver	180	7631A66	000000
			6"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	15	7631A62	00000


			6"	0.005"	-30 to 325	25	Not Rated	No Liner	SAE AMS-T-23397	Fed. Spec. L-T-80	Silver	180	7631A67	000000
			6"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	15	7631A63	00000
			6"	0.006"	-30 to 325	50	Not Rated	No Liner	—	—	Silver	180	7631A68	000000


			Silicone Adhesive



					1"	0.004"	-65 to 600	20	40	No Liner	—	—	Silver	15	7594A8	00000


1"					0.004"	-65 to 600	20	40	No Liner	—	—	Silver	180	7594A4	000000

Reinforced HVAC Tape

Use this tape for sealing and patching insulation and duct.

Metalized Polypropylene, Kraft Paper—Polypropylene tape is metalized and has an acrylic adhesive formulated for use in cold temperatures.

Aluminum, Kraft Paper—Aluminum foil tape is also known as FSK tape.

Fiberglass Reinforcement—Reinforced with fiberglass, this tape is flexible yet resists tearing.

	Lg., ft.	Overall Thk.	Reinforcement Material	Adhesive Material	Temp. Range, ° F	Tensile Strength, lbf/in. wd.	Adhesion to Steel, ozf/in. wd.	Flammability Rating	Color		Each
Metalized Polypropylene, Kraft Paper



	3"	150	0.0107"	Fiberglass	Acrylic Plastic	-40 to 185	40	66	UL 723 10/10 for Flame and Smoke	White	7620A11	000000


	Aluminum, Kraft Paper



			2"	150	0.006"	Fiberglass	Acrylic Plastic	-40 to 240	40	66	UL 723 10/10 for Flame and Smoke	Silver	76145A41	00000


			3"	30	0.0068"	Fiberglass	Rubber	-4 to 176	Not Rated	90	—	Silver	76145A19	00000
			3"	150	0.006"	Fiberglass	Acrylic Plastic	-40 to 240	40	66	UL 723 10/10 for Flame and Smoke	Silver	76145A42	00000
			4"	150	0.006"	Fiberglass	Acrylic Plastic	-40 to 240	40	66	UL 723 10/10 for Flame and Smoke	Silver	76145A43	00000
			6"	150	0.006"	Fiberglass	Acrylic Plastic	-40 to 240	40	66	UL 723 10/10 for Flame and Smoke	Silver	76145A44	00000

UL-Printed HVAC Tape

For easy identification, this tape is printed with UL flexible duct standards. Use it for insulation and jacketing. It holds up to UV rays.

Aluminum—Aluminum foil tape is more conformable than polypropylene plastic tape.

Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Lg., ft.	Overall Thk.	Material	Adhesive Material	Temp. Range, ° F	Tensile Strength, lbf/in. wd.	Adhesion to Steel, ozf/in. wd.	Features	Color (Message Color)		Each
UL 181A-P, UL 181B-FX



	2 1/2"	180	0.004"	Aluminum	Acrylic Plastic	-30 to 300	25	60	UV-Resistant	Silver (Red)	76145A33	000000


	3"	180	0.004"	Aluminum	Acrylic Plastic	-30 to 300	25	60	UV-Resistant	Silver (Red)	76145A36	00000


	UL 181B-FX



			2"	360	0.003"	Polypropylene	Acrylic Plastic	-40 to 185	20	30	UV-Resistant	Black (Silver), Silver (Red)	7575A51	00000


			3"	360	0.003"	Polypropylene	Acrylic Plastic	-40 to 185	20	30	UV-Resistant	Black (Silver), Silver (Red)	7575A52	00000

Antibacterial Protective Coatings

Prevent the growth of harmful and odor-causing bacteria, mold, and fungus on HVAC system components and hardware. These coatings contain silver, which inhibits the growth of mildew, mold, and fungus.

These coatings have excellent chemical resistance. They’re often used on panels, ducts, and drain pans. Apply with a brush, roller, or sprayer. The size listed is the combined total of the two parts.

Epoxy—Can

Cannot Be Sold To—Coatings cannot be sold to the listed areas due to product registration requirements and/or regulatory limits on VOC (volatile organic compounds).

		Dry Time
Container Size, gal.	Solution Type	Touch, hr.	Overall, day	Approx. Coverage @ Thk.	Mixing Req.	Mix Ratio	Application Time After Mixing, hr.	Max. Temp., ° F	Application Temp. Range, ° F	For Use Outdoors	For Use On	Color	Cannot Be Sold To		Each



	1 1/2	Water Based	1	7	570 ft² @ 1 mil	Yes	2:1	4	300	50 to 100	No	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Galvanized Iron, Galvanized Steel	Semi-Gloss Gray	Canada; Los Angeles County, CA; Orange County, CA; Riverside County, CA; San Bernardino County, CA	2561N21	0000000


	1 1/2	Water Based	1	7	640 ft² @ 1 mil	Yes	2:1	4	300	50 to 100	No	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Galvanized Iron, Galvanized Steel	Gloss White	Canada; Los Angeles County, CA; Orange County, CA; Riverside County, CA; San Bernardino County, CA	2561N22	000000

Leak-Detecting Dye Kits for HVAC Systems

Dye Kit with Sealant

With bright-colored dye and a fully equipped kit, you have everything you need to spot leaks in your HVAC system. These kits come with the correct amount of dye required for your system's size. Inject the dye into your system and scan it with the UV light—the dye is fluorescent, so it’s easy to spot most leaks right away. For small leaks, let the dye circulate for 24 hours and then inspect it again. Use the dye cleaner before you fix a leak. If the repair isn’t sufficient, you’ll be able to spot more dye.

Four 0.5 oz. UV Dye and Sealant Containers—Kits with UV dye and sealant are formulated to seal hard-to-find leaks from the inside of your system. The dye and sealant formula is non-polymer and oil soluble, making it safe to stay in your system indefinitely. Reinforce seals from the outside for a permanent fix.

ANSI/ASHRAE Standard 86 and ANSI/ASHRAE Standard 97—Kits that meet ANSI/ASHRAE adhere to standards for chemical stability.

	Dyes							Replacement Dyes
	Color	For Max. HVAC System Size, BTU/hr	Container Size, fl. oz.	Includes	Specs. Met		Each		Each
Liquid



		Fluorescent Blue/Green	168,000	0.5	Four 0.5 oz. UV Dye and Sealant Containers, Adapter, Carrying Case, Cleaner, Hose Assembly, Injector, UV Light, UV Protective Glasses	ANSI/ASHRAE Standard 86, ANSI/ASHRAE Standard 97	7546N13	0000000	7546N14	000000

Reinforced Insulation Tape

Seal fiberglass duct and insulation that's faced with an all-service jacket (ASJ).

Fiberglass Reinforcement—Tape is reinforced with fiberglass.

	Lg., ft.	Overall Thk.	Reinforcement Material	Adhesive Material	Temp. Range, ° F	Tensile Strength, lbf/in. wd.	Adhesion to Steel, ozf/in. wd.	Certification	Color		Each
Aluminum, Kraft Paper



	3"	30	0.009"	Fiberglass	Rubber	30 to 175	45	50	UL Listed	White	76755A67	000000


	3"	150	0.012"	Fiberglass	Acrylic Plastic	30 to 175	55	45	UL Listed	White	76755A65	00000
	5"	150	0.012"	Fiberglass	Acrylic Plastic	30 to 175	55	45	UL Listed	White	76755A66	00000