Nelson Firestop CLK™ Sealant

Name: Nelson Firestop CLK™ Sealant
SKU: NFS-AA529

Protect From the Dangers of Fire, Smoke, Gases and Water

NFS-AA529

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What's special about this sealant?

Versatile, ready to use, one component silicone sealant for a plethora of applications
Highly adhesive and easy to apply, this non-shrinking and non-toxic caulking maintains its flexibility and allows for movement or vibration, retaining sealing qualities even with expansion, contraction, or any other fluctuations
Waterproof, smoke proof, and gas proof – so nothing gets through
Requires no cable derating, and is easily repenetrated
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Part #	Description	Dimensions	Weight	Price
NFS-AA529	Nelson CLK™ Silicone Sealant Non-Sag – 10.3 oz Tube	18.5 in³ (304ml)	14.6 oz	Qty: Quick Ship
NFS-AA492	Nelson CLK™ Silicone Sealant Non-Sag - 5 Gallon Pail	1,155 in³ (19.0 L)	60 lbs	Qty: Manufacturer Direct

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

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 Non-Sag Flame spread………….…… 5 Smoke developed………… 40 Self-Leveling Flame spread………….……5 Smoke developed………….35
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.

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

MANUALS & USER GUIDES -

VIEW OUR GLOSSARY

3M Fire Barrier 2000 Silicone Sealant - 4.5 gallon pail
Ideal for sealing simple penetrations such as around metallic or glass pipes and conduits. Helps limit the spread of noxious gas, smoke and water. Maintains the integrity of fire-rated construction.
STI SpecSeal® SSP Putty
Excellent for retrofit jobs. Comes in a 36 cubic inch bar easy to apply and meets the highest quality standards. Use it in metallic conduits, data or electrical power cable penetrations.
3M™ Fire Barrier Pillow
During a fire, it expands and locks itself into place, completely surrounding the penetrant(s) stopping smoke, fire and toxic gases from spreading.
$NFS-AA892$ Nelson Firestop LBS3™ Latex Sealant
Firestops through-penetrations of non-combustible pipe, insulated pipe and combustible pipe (such as PVC, PEX, CPVC and ABS). It can applied using a standard caulk gun, bulk loader, or trowel.
Caulk Guns
Perfect for applying caulks, adhesives and sealants. Available in a range of thrust ratios to suit different viscosities, and dispense with a simple trigger-style handle.