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Nelson Firestop CLK™ Sealant
Protect From the Dangers of Fire, Smoke, Gases and Water
Nelson Firestop CLK⢠Sealant
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What's special about this sealant?
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- The non-sag, quick drying application won’t run, and is suitable for overhead applications; no damming required
- The self-leveling liquid for quick flow and fill in has excellent viscosity
- Up to 4 hour rating for added safety
- Elastomeric (Flexible Cure) makes it easy to work with in many applications
- Acoustically tested for excellent noise reduction properties
- Can be used for non-combustible pipe throughstop penetrations, and for floor-to-wall, floor-to-floor and head of wall applications
- 1 year manufacturer’s warranty
This flexible sealant is used to protect and prevent the spread of fire, smoke, gases and water. This product is ideal for applications like through firestop penetrations and construction joints, because it is used for simple penetrations like those around metallic pipes or conduits.
Designed with fire rating protection in mind, it is flexible enough to withstand the shifts that can occur in joints.
No maintenance is required; in the future, if you need to change the sealant, simply cut through the existing seal and with a knife and reseal the opening with more Nelson CLK™.
It is offered in two forms:
The non-sag caulk can be troweled while the self-leveling grade is better suited for floor applications. The non-sag can be applied using a conventional caulk gun, bulk loader or by trowel. For larger applications it can be pumped directly from the pail.
The self leveling formula fluid can be poured into place in floor applications. Apply the required depth of sealant beginning at the edge of the opening and ensure that the sealant makes complete contact with the inside surface of the opening, as well as the surface of the penetrating item.
Applications:
- Blank openings
- Metallic pipes
- Non-metallic pipes
- Cables
- Cable trays
- Insulated pipes
- Combos
- Interior construction joints
SPECS -
- Nelson Firestop - CLK Silicone Sealant - MSDS (PDF)
- Nelson Firestop - CLK Silicone Sealant - Techincal Data (PDF)
| Physical Properties | |
| Color | Brick Red |
| Weight | 10.75 lbs./ gal. |
| Consistency | Thixotropic |
| Application Temp | 40°F (4°C) to 90°F (32°C) |
| Service Temp | 0°F (-18°C) to 110°F (43°C) |
| Cure Time | Less than 2 weeks for 1/2" thickness |
| Hazardous Ingredients | None |
| STC Rating | 52 |
| Test Compliance | |
ASTM E84
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| ASTM E90 Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements | |
| ASTM E84 and UL 1479 Test method for through stop fire penetrations. | |
| ASTM E-1966 andUL 2079 Test method for fire resistance of building joint systems. | |
| Testing Data | |
| For specific test criteria, refer to the UL Fire Resistance Directory. | |
| Storage & Handling | |
| Nelson CLK™ should be stored at temperatures between 40°F (4°C) and 90°F (32°C). Protect from feezing. Expected shelf life is one year from date of shipment. |
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| Non Sag | |
| Extrusion Rate (60 sec. @ 40 psi) | 80-125 |
| Slump (inches) | 0.125" |
| Specific Gravity (WPG * 0.1202) | 1.19-1.29 |
| Extrusion Rate (gm/min.) | 100-500 |
| Skin Over Time (min.) | less than 15 min |
| Tack Free Time (min.) | less than 60 min |
| Cure Time | less than 2 weeks for 1/2" thickness |
| Shore “A” Durometer | 17-25 |
| Tensile (psi) | 200-260 |
| Elongation (%) | 600-800 |
| Modulus (psi) | 70-75 |
| Flame Spread (ASTM E84) | 5 |
| Smoke Developed (ASTM E84) | 40 |
| STC Rating (ASTM E90) | 52 |
| Self Level | |
| Viscosity | 44,000-66,000 cps |
| Specific Gravity (WPG * 0.1202) | 1.23-1.32 |
| Skin Over Time (min.) | less than 20 min |
| Tack Free Time (min.) | less than 220 min |
| Cure Time | less than 2 weeks for 1/2" thickness |
| Shore “A” Durometer | 15-25 |
| Tensile (psi) | 120-220 |
| Elongation (%) | 300-700 |
| Modulus (psi) | 35-65 |
| Flame Spread (ASTM E84) | 5 |
| Smoke Developed (ASTM E84) | 35 |
| STC Rating (ASTM E90) | 52 |
| PART # | DESCRIPTION | DIMENSIONS | WEIGHT | PRICE |
| NFS-AA529 | Nelson CLK™ Silicone Sealant Non-Sag – 10.3 oz Tube |
18.5 in3 (304ml) 12/Ctn | 12 lbs | |
| NFS-AA539 | Nelson CLK™ Silicone Sealant Self Leveling -10.3 oz Tube |
18.5 in3 (304ml) 12/Ctn | 12 lbs | |
| NFS-AA492 | Nelson CLK™ Silicone Sealant Non-Sag - 5 Gallon Pail |
1155 in3 (19.0L) | 60 lbs | |
| NFS-AA552 | Nelson CLK™ Silicone Sealant Self Leveling - 5 Gallon Pail |
1155 in3 (19.0L) | 60 lbs | |
MANUALS & USER GUIDES -
- Nelson Firestop - CLK Silicone Sealant - Installation Instructions (PDF)
- Nelson Firestop - CLK Silicone Sealant - Techincal Data (PDF)
- Nelson Firestop - CLK Silicone Sealant - MSDS (PDF)
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