About Sealant Flexibility
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Metal Duct HVAC Sealants
Seal metal-to-metal joints in ductwork. These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.
Container | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Type | Begins to Harden | Reaches Full Strength | Tensile Strength  | Hardness | Temp. Range, °F | For Joining | Color | Each | |
Acrylic | ||||||||||
| 10.1 fl. oz. | Cartridge | 15 min. | 48 hrs. | Not Rated | Soft (Durometer 20A) | -40° to 200° | Metal | Gray | 00000000 | 00000 |
| 1 gal. | Pail | 15 min. | 48 hrs. | Not Rated | Soft (Durometer 20A) | -40° to 200° | Metal | Gray | 00000000 | 00000 |
HVAC Sealants
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, 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.
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Tensile Strength, psi | Hardness | Temp. Range, °F | Specifications Met | For Joining | Choose a Color | Each | |
Dow Corning Silicone | |||||||||||||
| 10.3 | Cartridge | 5 min. | 24 hrs. | 600% | -25% to 25% | 325 | Soft (Durometer 27A) | -40° to 350° | UL Listed, FDA Compliant 21 CFR 177.2600, UL 94 HB | Metal Metal to Plastic Metal to Rubber Metal to Composites Plastic Rubber Composites | 000000 | 000000 | |
Silicone | |||||||||||||
| 9.4 | Cartridge | 20 min. | 24 hrs. | Not Rated | -25% to 25% | Not Rated | Soft (Durometer 26A) | -60° to 400° | Fed. Spec. TT-S-001543A Class A, Fed. Spec. TT-S-00230C Class A | Metal Metal to Plastic Metal to Rubber Metal to Composites Plastic Rubber Composites | 0000000 | 0000 | |
| Primer for Dow Corning Sealant (16 fl. oz. Bottle) | 0000000 | Each | 000000 |
Expansion Plugs for Conduit
Seal conduit openings to keep water, dirt, and animals from damaging your wiring. When you twist the nut on top of these plugs, a rubber seal expands to close off the end of your conduit. Tie a rope or pull line to the loop at either end of these plugs to hold them in place during installation.
For technical drawings and 3-D models, click on a part number.
For Conduit | Material | ||||||
|---|---|---|---|---|---|---|---|
| Trade Size | ID | O'all Ht. | Seal | Loop | Features | Each | |
Loop Nut—Plastic Plate | |||||||
| 3/4 | 0.77"-1.02" | 3 1/4" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |
| 1 | 0.99"-1.39" | 3 3/4" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 0000 |
| 1 1/4 | 1.16"-1.51" | 3 13/16" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 0000 |
| 1 1/2 | 1.46"-1.83" | 4" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 0000 |
| 2 | 1.83"-2.39" | 4" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 0000 |
| 2 1/2 | 2.4"-2.99" | 7 1/2" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |
| 3 | 2.92"-3.45" | 7 5/8" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |
| 3 1/2 | 3.41"-3.9" | 8 3/16" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |
| 4 | 3.94"-4.33" | 7 1/2" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |
| 5 | 4.85"-5 1/4" | 7 5/8" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |
| 6 | 5.92"-6.37" | 10 5/8" | Synthetic Rubber | Plastic | Internal Eyebolt | 0000000 | 00000 |