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Noncorrosive Silicone Sealants


Also known as neutral-cure sealants, these won't discolor copper, brass, and concrete. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, 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. Sealants that are good for joining dissimilar materials also work well in environments with wide temperature fluctuation.
Sealants that cannot be sold to California exceed local regulatory limits on VOCs (volatile organic compounds).
Container | |||||||||||||
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Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | For Joining | Cannot Be Sold To | Choose a Color | Each | |
Dow Corning Silicone | |||||||||||||
3145 | 3 | Tube | 80 min. | 7 days | 625% | Not Rated | Medium (Durometer 45A) | -45° to 390° | Metal Plastic Glass | __ | 0000000 | 000000 | |
3145 | 10.3 | Cartridge | 80 min. | 7 days | 625% | Not Rated | Medium (Durometer 45A) | -45° to 390° | Metal Plastic Glass | __ | 0000000 | 000000 | |
Momentive/GE Silicone | |||||||||||||
RTV6708 | 10.1 | Cartridge | 25 min. | 24 hrs. | 450% | Not Rated | Soft (Durometer 15A) | -75° to 400° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | CA | White | 00000000 | 00000 |
Permatex Silicone | |||||||||||||
81173 | 12.9 | Cartridge | 30 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 15A) | -75° to 450° | Metal Metal to Plastic Metal to Rubber Metal to Composites Metal to Glass Plastic Plastic to Rubber Plastic to Composites Plastic to Glass Rubber Rubber to Composites Rubber to Glass Asphalt Composites Composites to Glass Glass Masonry Wood | CA | Black | 0000000 | 00000 |
Noncorrosive Silicone Sealants with Material Certification

This sealant includes a material certificate with traceable lot number, test report, and product shelf life. Also known as neutral-cure, this sealant won't discolor copper, brass, and concrete. It’s non-sagging, so it won't drip from vertical and overhead surfaces. Made from silicone, this sealant is RTV (room-temperature vulcanizing). It cannot be sold to California because it exceeds local regulatory limits on VOC (volatile organic compounds).
Elongation indicates flexibility—the higher the value is, the more a sealant can stretch. This sealant is good for use between dissimilar materials and in environments with wide temperature fluctuation.
Container | |||||||||||||
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Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Tensile Strength, psi | Hardness | Temp. Range, °F | For Joining | Color | Cannot Be Sold To | Each | |
Momentive/GE Silicone | |||||||||||||
RTV6708 | 10.1 | Cartridge | 25 min. | 24 hrs. | 450% | 225 | Soft (Durometer 18A) | -75° to 400° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | White | CA | 00000000 | 000000 |
Puncture-Resistant Sealants


Form seals that resist punctures, cuts, and abrasion to withstand heavy wear and tampering. These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.
Elongation and joint compression/expansion 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.
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 | |
Polyurethane | ||||||||||||
10.1 | Cartridge | 90 min. | 48 hrs. | 225% | -12.5% to 12.5% | 250 | Medium (Durometer 55A) | 20° to 120° | Metal, Plastic, Rubber, Asphalt, Composites, Glass, Masonry, Wood | White | 0000000 | 000000 |
20 | Sausage Pack | 90 min. | 48 hrs. | 225% | -12.5% to 12.5% | 250 | Medium (Durometer 55A) | 20° to 120° | Metal, Plastic, Rubber, Asphalt, Composites, Glass, Masonry, Wood | White | 0000000 | 00000 |
Ready-to-Use Silicone Potting Compounds


No mixing required—these potting compounds come ready to apply. Use them to encase electronic assemblies for protection from dust, moisture, mechanical shock, and vibration. Softer and more flexible than epoxies and urethanes with the widest temperature range, silicone potting compounds are the best choice for high-temperature applications and electronics exposed to thermal cycling. They have good moisture resistance but poor chemical and abrasion resistance. Silicones provide excellent electrical insulation. They're also known as RTV (room-temperature vulcanizing) compounds because they don’t need heat or UV light to cure.
Potting compounds that cannot be sold to California exceed local regulatory limits on VOCs (volatile organic compounds).
Container | Dry Time | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Consistency | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Clarity | Cannot Be Sold To | Each | |
Dow Corning Compounds—Medium Soft | |||||||||||||||
738 | 3 | Tube | Paste | 90 min. | 24 | 475 | Not Rated | -45° to 390° | UL Listed, UL Recognized Component, MIL-A-46146, UL 94 HB | Aluminum, Copper, Steel, Plastic, Rubber, Fiberglass | White | Opaque | __ | 0000000 | 000000 |
738 | 10.1 | Cartridge | Paste | 90 min. | 24 | 475 | Not Rated | -45° to 390° | UL Listed, UL Recognized Component, MIL-A-46146, UL 94 HB | Aluminum, Copper, Steel, Plastic, Rubber, Fiberglass | White | Opaque | __ | 0000000 | 00000 |
Loctite® Compounds—Soft | |||||||||||||||
5145 | 3 | Tube | Thick Liquid | 2 min. | 72 | 450 | 0.2 | -45° to 390° | MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | White | Semi-Clear | __ | 0000000 | 00000 |
5145 | 10.1 | Cartridge | Thick Liquid | 2 min. | 72 | 450 | 0.2 | -45° to 390° | MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | White | Semi-Clear | __ | 0000000 | 000000 |
Momentive/GE Compounds—Soft | |||||||||||||||
RTV162 | 2.8 | Tube | Paste | 4 hrs. | 48 | 450 | 0.2 | -75° to 400° | UL Recognized Component, MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Ceramic, Glass | White | Opaque | CA | 00000000 | 00000 |
RTV162 | 10.1 | Cartridge | Paste | 4 hrs. | 48 | 450 | 0.2 | -75° to 400° | UL Recognized Component, MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Ceramic, Glass | White | Opaque | CA | 00000000 | 00000 |