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To help you save time, we offer a wide selection of fasteners, connectors,
strut, tools and more. At Southwest Fastener, service means having
what you need, when you need it — Service Sets Us Apart™

Simple, self-sealing design. Nothing to activate.
Insert your cables and it’s and compliant.
Series 22, 33, and 44+ Available

SpecSeal LCI

A water-based intumescent sealant intended for a wide range of through penetration and construction joint applications. SpecSeal® LCI Sealant has excellent caulking properties making it easy to apply in vertical applications as well as overhead.

• Gun Grade material available in caulk tubes, sausages and pails
• Tested for through-penetration & construction joint configurations
• Compatible with CPVC Piping
• Can be sanded & painted to match its surroundings


SpecSeal SSS

A premium grade waterbased Intumescent firestop sealant, that incorporates our proprietary two-stage intumescent technology making it the go to choice for any combustible or non-combustible penetrants. Only 1/2″ applied depth will provide up to a 4 hr fire resistance rating when tested to ASTM E814/UL 1479.

• Patented Two-Stage Intumescent Technology
• Easily works into tight spaces between penetrants
• Compatible with CPVC Piping
• Can be sanded and painted to match its surroundings

IN STOCK SKU# SSS100 10.3 OZ TUBE, SSS120 20 OZ SAUSAGE, *5 gal. available

SpecSeal SNS

A high quality acrylic latex sealant designed for sealing through penetrations (such as pipes, conduits, cabling, busways, openings), membrane penetrations (such as p-traps and outlet boxes) in smoke rated walls.

• Economical - high performance without the high price
• Water resistant - will not re-emulsify when dry
• Remains flexible - allows movement
• Acoustically tested, reduces noise transmission
• Paintable when dry

IN STOCK SKU# SNS120W 20 OZ SAUSAGE, SNS129W 29 OZ TUBE, *5 gal available

SpecSeal WF

A latex-based intumescent firestop caulk designed for residential wood frame construction. WF300 Caulk is tested for addressing penetrations through wood/frame construction such as wood stud walls and floor/ceiling assemblies. Under fire exposure, WF300 expands to up to four times its original volume.

• Installer friendly, easily applies with standard caulking gun
• Suitable for combustible and non-combustible penetrants
• Tested for up to 3 Hours of fire exposure when tested to ASTM E814/UL147

IN STOCK SKU# WF310-10.1 OZ TUBE, WF320-20 OZ SAUSAGE *5 gal. available

SpecSeal SSP

Firestop Putty excels at sealing cabling penetrations and outlet boxes. SSP Putty is non-hardening and easily hand works around grouped cabling penetrations forming a re-enterable seal allowing for future work.

• Available in tubes or preformed pads
• Remains pliable and workable for the lifetime of the installation
• Acoustically tested
• Will not harden overtime


SpecSeal SSB

Firestop Pillows easily compress and conform around any penetrant. Equally suited for new or existing conditions, SpecSeal® Pillows make short work of even the most complex through-penetration firestop conditions

• Available in four different sizes
• Tested in a wide range of construction types and configurations
• Easily installs from a single side
• Re-enterable allowing for future work in previously sealed openings

IN STOCK SKU# SSB24 2”X4”X9” *Other sizes available

SpecSeal LLC

Firestop Collars are factory-manufactured firestop devices sized to plastic pipes of up to 4 in. Trade Size. LCC Collars consist of a restraining collar with a factory applied intumescent ensuring the correct amount of material is applied every time.

• Sized for 1-1/2 in., 2 in., 3 in., & 4 in. Trade Size Combustible Pipes
• Installs quickly and eliminates waste
• Tested in a variety of construction types

IN STOCK SKU# SSC150- 1-1/2”, SSC200 2”, SSC300 3” *4” also available

Contact Us

In you have any questions or would like to place an order,
please provide your contact information below and
a Bolt-Head will contact you.





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