Glazing Sealants | McMaster-Carr

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20 Products

About Sealant Flexibility

These sealants don't degrade in sunlight. Also known as glazing compounds, use these sealants to install glass in framing. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, these sealants are RTV (room-temperature vulcanizing).

Elongation and joint compression/expansion tolerance indicate flexibility. For joints between dissimilar materials and in environments with wide temperature fluctuation, choose a sealant with a higher elongation or joint compression/expansion tolerance.

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Elongation	Joint Compression/ Expansion Tolerance	Hardness	Temp. Range, °F	Specifications Met	For Joining	Choose a Color		Each
Dow Corning Silicone
791	10.3	Cartridge	15 min.	14 days	Not Rated	-50% to 50%	Soft (Durometer 25A)	-40° to 300°	ASTM C920 Type S Grade NS Class 50	Metal Metal to Glass	Black, Gray	0000000	000000
999A	10.3	Cartridge	10 min.	7 days	Not Rated	-25% to 25%	Soft (Durometer 25A)	-75° to 350°	__	Metal Metal to Glass	Aluminum, Black, Clear, White	0000000	0000
Sika Sikaflex Silicone
295	10.1	Cartridge	60 min.	72 hrs.	700%	-50% to 50%	Soft (Durometer 35A)	-40° to 190°	__	Plastic Plastic to Glass Rubber Rubber to Glass	Black, White	000000	00000
Silicone
__	10.1	Cartridge	30 min.	24 hrs.	475%	-25% to 25%	Soft (Durometer 20A)	-75° to 400°	FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.2600, Fed. Spec. TT-S-001543A Class A, Fed. Spec. TT-S-00230C Type II Class A, NSF/ANSI 51	Metal Metal to Glass Plastic Plastic to Glass Rubber Rubber to Glass Composites Composites to Glass Glass Wood Wood to Glass	Aluminum, Black, Clear, White	0000000	0000

Glass Sealing Rope

Press this pliable rope into place to hold glass in window frames and seal leaks. It’s also known as glazing compound. The rope is non-sagging, so it won't drip from vertical and overhead surfaces. It’s good for use between dissimilar materials and in environments with wide temperature fluctuation. Remove the peel-off liner to install.

Butyl Rubber
Dia.	Lg., ft.	Tensile Strength, psi	Hardness	Application Temp. Range, °F	Temp. Range, °F	For Joining	Color		Each
1/4"	20	16	Soft (Durometer 15A)	-5° to 120°	-40° to 180°	Metal Metal to Glass Glass Wood Wood to Glass	Gray	0000000	000000

Glass Sealants

Also known as glazing compounds, use these sealants to install glass in aluminum, steel, and wood framing. They’re non-sagging, so they won't drip from vertical and overhead surfaces. These sealants are good for use between dissimilar materials and in environments with wide temperature fluctuation. They must be painted after hardening to stand up to UV light. For sealants that require primer for use on wood, use any oil-based wood primer.

Container
Size	Type	Begins to Harden	Reaches Full Strength	Tensile Strength	Hardness	Application Temp. Range, °F	Temp. Range, °F	For Joining	Primer Required For Use On	Color		Each
Calcium Carbonate
10.1 fl. oz.	Cartridge	6 hrs.	72 hrs.	Not Rated	Medium Hard (Durometer 60A)	40° to 90°	0° to 180°	Metal Metal to Glass Glass Wood Wood to Glass	__	White	0000000	00000
16 fl. oz.	Can	7 days	4 mo.	Not Rated	Not Rated	40° to 90°	-20° to 160°	Metal Metal to Glass Glass Wood Wood to Glass	Wood	White	0000000	00000
32 fl. oz.	Can	48 hrs.	21 days	Not Rated	Not Rated	40° to 90°	0° to 180°	Metal Metal to Glass Glass Wood Wood to Glass	__	White	0000000	00000
1 gal.	Can	7 days	4 mo.	Not Rated	Not Rated	40° to 90°	-20° to 160°	Metal Metal to Glass Glass Wood Wood to Glass	Wood	White	0000000	00000
5 gal.	Pail	48 hrs.	__	Not Rated	Not Rated	40° to 110°	-10° to 120°	Metal Metal to Glass Glass Wood Wood to Glass	__	White	0000000	000000

Structural Glass Sealants

Make seals that support glass under heavy loads in equipment and buildings. These sealants are also known as glazing compounds. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, sealants are RTV (room-temperature vulcanizing).

Joint compression/expansion tolerance indicates flexibility—the higher the value is, the more joint movement a sealant can sustain.

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Joint Compression/ Expansion Tolerance	Tensile Strength, psi	Hardness	Application Temp. Range, °F	Temp. Range, °F	For Joining	Choose a Color		Each
Dow Corning Silicone
795	10.3	Cartridge	3 hrs.	14 days	-50% to 50%	60	Medium Soft (Durometer 35A)	-20° to 120°	-40° to 300°	Metal	Black, Bronze, Gray, White	0000000	000000
795	20	Sausage Pack	3 hrs.	14 days	-50% to 50%	60	Medium Soft (Durometer 35A)	-20° to 120°	-40° to 300°	Metal	Black, Gray, Limestone, White	0000000	00000

Impact-Resistant Structural Glass Sealants

Repair equipment and vehicle windows with these sealants that are rated to withstand impact within three hours of application. They’re non-sagging, so they won't drip from vertical and overhead surfaces. These sealants are good for use between dissimilar materials and in environments with wide temperature fluctuation. They’re crash tested and meet Federal Motor Vehicle Safety Standard 212 for windshield mounting.

Elongation indicates flexibility—the higher the value is, the more joint movement a sealant can sustain.

A primer is required. For best results use P591 for composites, glass, and fiberglass and P592 for aluminum, steel, and stainless steel.

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Elongation	Tensile Strength, psi	Hardness	Application Temp. Range, °F	Temp. Range, °F	For Joining	Color		Each
3M Polyurethane
590	10.5	Cartridge	40 min.	24 hrs.	700%	1,200	Medium Hard (Durometer 60A)	40° to 95°	-40° to 200°	Metal Metal to Glass Composites Composites to Glass Glass	Black	0000000	000000
590	20.3	Sausage Pack	40 min.	24 hrs.	700%	1,200	Medium Hard (Durometer 60A)	40° to 95°	-40° to 200°	Metal Metal to Glass Composites Composites to Glass Glass	Black	0000000	00000

3M Primer P592 (8.5 fl. oz. Bottle)	0000000	Each	0000000
3M Primer P591 (8.5 fl. oz. Bottle)	0000000	Each	00000

Fire-Rated Glass Sealing Tape

Seal glass windows in metal and wood fire-rated doors. Also known as glazing tape, it has an adhesive back with a peel-off liner.

Fire Safety
Rating, min.	Standard	Wd.	Lg., ft.	Tensile Strength, psi	Hardness	Application Temp. Range, °F	Max. Temp., °F	For Joining	Color		Each
Aluminum
3/64" Thick.
45	UL 10C	7/16"	8	230	Not Rated	65° to 80°	1800°	Metal Metal to Glass Glass Wood	White	0000000	000000
45	UL 10C	7/16"	14	230	Not Rated	65° to 80°	1800°	Metal Metal to Glass Glass Wood	White	0000000	00000
5/64" Thick.
90	UL 10C	7/16"	16	230	Not Rated	65° to 80°	1800°	Metal Metal to Glass Glass	White	000000000	00000

Self-Leveling Sealants

Thinner than non-sagging sealants, this sealant flows easily into cracks and has a smooth finish.

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

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Tensile Strength, psi	Hardness	Temp. Range, °F	For Joining	Color		Each
3M Hybrid Polymer
2084	5	Tube	5 min.	24 hrs.	25	Not Rated	-30° to 250°	Metal Metal to Glass Glass Wood	Aluminum	0000000	000000

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