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National Guard Products 127SA Silicone Sponge Perimeter Weatherstrip Head-and-Jamb Set – Anodized Aluminum
National Guard Products (NGP) 127SA is a silicone sponge perimeter weatherstrip head-and-jamb set finished in anodized aluminum with a black closed-cell microcellular silicone sponge insert. Each set ships as one head piece and two jamb pieces, precision-cut for the ordered opening size, and installs with screw-applied fasteners directly to the frame stop. The 127SA is engineered for commercial hollow metal and wood door openings that demand air infiltration control, smoke and draft containment, and certified fire door performance — all in a single perimeter seal solution. The set is available in five standard opening sizes and is made to order with a lead time of 10–15 business days.
High-Performance Silicone Sponge Weatherstrip Features
- UL-Certified Fire Door Compliance: Certified by UL to CAN/ULC-S104 and ANSI/UL10B, complying with NFPA 80 and NFPA 252 for hollow metal fire doors rated up to 3 hours and wood fire doors rated up to 90 minutes.
- Positive Pressure Rated: Certified by UL to ANSI/UL10C, complying with IBC, NFPA 80, and NFPA 252 for positive pressure applications on hollow metal fire doors up to 3 hours and wood fire doors up to 90 minutes.
- Smoke & Draft Control Gasketing: Certified by UL to ANSI/UL10C and ANSI/UL1784 Category 'H'; complies with IBC and NFPA 105 for use on 'S' labeled positive pressure hollow metal fire doors up to 3 hours and wood fire doors up to 90 minutes — making this an ideal smoke gasketing solution for rated assemblies.
- ANSI/BHMA Certified Gasketing: Complies with ANSI/BHMA A156.22 American National Standard for Door Gasketing and Edge Sealing Systems, listed in the BHMA Certified Products Directory, and BHMA certified to ANSI/BHMA A156.22 performance tests for heat and cold.
- Patent-Pending Microcellular Silicone Technology: The black closed-cell sponge insert delivers outstanding flexibility and memory, ensuring consistent contact across the door perimeter through millions of open/close cycles.
- Extreme Temperature Performance: Rated from -81°F to 300°F, the silicone sponge insert remains flexible at extreme temperatures, making it suitable for environments where ordinary vinyl or EPDM seals may stiffen or fail.
- FM200 and Halon Compatible: Specifically recommended for areas utilizing FM200 or Halon fire suppression systems, where chemical resistance of the seal material is critical.
- Ozone, UV, and Aging Resistant: The synthetic rubber polymer construction provides excellent long-term resistance to ozone, UV exposure, and environmental aging — important for vestibule, exterior, and high-cycle openings.
- Flame-Resistant and Moisture-Resistant: The sponge insert is both flame-resistant and moisture-resistant, protecting the door assembly against the dual threats of fire and water infiltration.
- Durable Aluminum Extrusion: Carrier profile is extruded from Aluminum Alloy 6063, T5 Temper with an anodized finish for long-term corrosion resistance in commercial environments.
- Furnished Stainless Steel Fasteners: Each set includes #6 x 3/4" stainless steel sheet metal screws — no separate hardware purchase required.
- Slotted Screw Holes for Easy Field Adjustment: Screw holes are slotted, allowing on-site compression adjustment after installation without removing and re-drilling.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 127SA |
| Product Type | Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Anodized Aluminum |
| Seal / Insert Material | Black Closed-Cell Microcellular Silicone Sponge (Patent Pending) |
| Seal Color | Black |
| Carrier Alloy | Aluminum Alloy 6063, T5 Temper |
| Profile Section (Typical) | 1" x 3/16" |
| Set Contents | 1 Head + 2 Jambs (head-and-jamb set) |
| Installation Method | Screw applied to the frame stop |
| Furnished Fasteners | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Holes | Slotted for field adjustment |
| Available Opening Sizes | 3'0 x 7'0 | 4'0 x 7'0 | 6'0 x 7'0 | 6'0 x 8'0 | 8'0 x 8'0 |
| Temperature Range | -81°F to 300°F |
| Fire Door Rating — Hollow Metal | Up to 3 Hours |
| Fire Door Rating — Wood | Up to 90 Minutes |
| UL Certifications | CAN/ULC-S104, ANSI/UL10B, ANSI/UL10C, ANSI/UL1784 Category 'H' |
| Compliance Standards | NFPA 80, NFPA 252, NFPA 105, IBC |
| BHMA Certification | ANSI/BHMA A156.22 (Heat and Cold Performance Tests); Listed in BHMA Certified Products Directory |
| Smoke & Draft Control | ANSI/UL1784 Category 'H' — Positive Pressure 'S' Labeled Doors |
| Fire Suppression Compatibility | Recommended for FM200 and Halon suppression systems |
| Resistance Properties | Flame-Resistant, Moisture-Resistant, Ozone-Resistant, UV-Resistant, Age-Resistant |
| Stock Status | Made to Order |
| Lead Time | 10–15 Business Days |
Pro-Tip for Perimeter Sealing
The NGP 127SA is surface applied directly to the frame stop of the door opening — no routing or mortising required. The slotted screw holes allow you to position the carrier for optimal silicone sponge compression before fully tightening the furnished #6 x 3/4" stainless steel sheet metal screws. Installing all three pieces (head and both jambs) as a complete set ensures continuous perimeter coverage with no gaps at the corners, which is essential for maintaining the strip's UL-certified smoke, draft, and fire ratings. Because the set is made to order cut to your specified opening size, confirm the rough opening dimensions before placing your order — the 10–15 business day lead time makes early ordering especially important for project schedules.
| Gasketing Set Size | 3'0 x 7'0 Set or 4'0 x 7'0 Set or 6'0 x 7'0 Set or 6'0 x 8'0 Set or 8'0 x 8'0 Set |
| Brand | National Guard Products |
| Housing Finish | Aluminum |
| Smoke Rated | Smoke Rated |
| Weatherstripping Type | Perimeter Gasketing |
| Housing Size | 1" x 3/16" |
| Insert Color | Black |
| Fasteners | #6 x 3/4" Stainless Steel Sheet Metal Screws Furnished |
| Fire Rated | Fire Rated |
| Insert Material | Silicone |
| Mounting Type | Screw Applied - Exp Screw, Surface Mounted |
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