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STI SpecSeal SSP4S Fire Barrier Putty Pad 7.25in x 7.25in x 3/16in SSP4S
SpecSeal SSP4S is a 7.25 x 7.25 x 3/16 in intumescent fire barrier putty pad for electrical boxes and membrane penetrations. The non-hardening pad packs by hand, stays soft for retrofit, and expands up to eight times when heat hits.
- Fits a typical 1-1/2 in deep 4S box with no cutting or piecing required.
- Stays soft and reusable so crews can open boxes later without chiseling out a hard fill.
- Reduces sound transmission at boxes while adding fire resistance in gypsum assemblies.
$5.47
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SpecSeal SSP4S Fire Barrier Putty Pad - 7.25 X 7.25
SpecSeal SSP4S is a 7.25 x 7.25 x 3/16 in intumescent fire barrier putty pad for electrical boxes and other membrane penetrations. The non-hardening red putty packs by hand onto a typical 4S box with no tools, stays soft for later retrofit, bonds to common construction materials, and expands up to eight times original size when high heat or flame hits the pad.
Key Features
- SSP4S is the 7.25 x 7.25 x 3/16 in SpecSeal putty pad sized for a typical 1-1/2 in deep 4S electrical box.
- Uses non-hardening intumescent putty that stays soft so crews can retrofit or reuse material later.
- Hand packing with aggressive adhesion needs no tools, and poly liner on both faces keeps installs cleaner.
- Expands up to eight times original size when high heat or flame hits the pad.
- Seals metallic and nonmetallic outlet or switch boxes in gypsum wallboard assemblies when the design calls for putty pads.
- Reduces sound transmission at boxes while adding fire resistance as a wall opening protective material.
- Works as a metered pad for through-penetrations and as a cushion for movement from settling or vibration when the design allows.
Technical Specifications
| Property | Value |
|---|---|
| Catalog number | SSP4S |
| UPC | 730573022009 |
| Size | 7.25 in x 7.25 in x 3/16 in (184 x 184 x 4.8 mm) |
| Color | Red |
| Chemistry | Non-hardening two-stage intumescent putty pad |
| Volume expansion | Up to 8x free expansion (greater than 500%) |
| Expansion begins | 230°F (110°C) |
| In-service temperature | 10°F to 120°F (-23°C to 49°C) |
| Installation temperature | Less than 100°F (38°C) |
| Shelf life | No limit |
Product documents: SpecSeal SSP Putty and Putty Pads Product Data Sheet
Frequently Asked Questions
What boxes and openings is SpecSeal SSP4S made to protect?
SSP4S Putty Pads seal around electrical boxes to reduce sound transmission and increase fire resistance, and they also seal through-penetrations, construction gaps, and blank openings when the design uses putty. The PDS names membrane penetrations such as med-gas valve boxes, tub and shower valves, and clean-out tees among putty applications. The pad is sized to fit a typical 1-1/2 in (38 mm) deep 4S box with no cutting or piecing.
How do crews apply the 7.25 x 7.25 in SSP4S pad?
Faced on both sides with a poly liner, the pad peels and packs by hand onto the box or penetrant with no tools and little mess. Soft, pliable putty with aggressive adhesion sticks to common construction materials, cable jacketing, and pipes. Installation temperature is less than 100 F (38 C). Do not apply to exposed electrical conductors. Follow the published wall-opening protective design.
How much does SpecSeal SSP putty expand in a fire?
The PDS states SpecSeal Putty expands up to eight times its original size when exposed to high temperatures or flames. The physical-properties table lists free volume expansion greater than 500%. Expansion begins at 230 F (110 C), and the specification language calls for a minimum five-times expansion with continuing expansion from 230 F to less than 1,000 F (110 C to less than 538 C). Prefer the amfile narrative of up to eight times for product copy.
What fire ratings do SSP putty pads carry for outlet boxes?
SpecSeal Putty and Putty Pads have been tested to ASTM E814 (UL1479), CAN/ULC-S115, and UL263 (ASTM E119, NFPA 251). They are Certified for up to 2 hours as a Wall Opening Protective Material for metallic and nonmetallic outlet or switch boxes in gypsum wallboard assemblies (steel and wood stud). Boxes protected with SpecSeal Putty Pads have been tested with box spacing reduced to less than 16 in (406 mm). Follow the published design.
What temperature window can SSP4S stay in service after install?
In-service temperature is 10 F to 120 F (-23 C to 49 C). Installation temperature is less than 100 F (38 C). Storage temperature is less than 100 F (38 C). Shelf life has no limit. VOC content is 0 g/L. STC is 62 on a specific construction. The putty remains soft for reuse or retrofit and has no water-soluble intumescent ingredients.
Which other SSP putty packs appear on the PDS besides SSP4S?
The preferred Indcon amfile PDS also lists SSP100 36 in3 bar, SSP28 24 in3 bar, and SSP9S 9.00 x 9.00 x 3/16 in pad. Only SSP4S is currently live on Indcon in this batch, so no sister size box is linked for this live SKU.
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