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National Guard Products 161SA Silicone Dense Bulb Perimeter Weatherstrip Set – Anodized Aluminum
National Guard Products (NGP) 161SA is a silicone dense bulb perimeter weatherstrip head-and-jamb set finished in Anodized Aluminum with a black dense silicone bulb insert. Each set includes one head piece and two jamb pieces, screw-applied directly to the door frame stop, and is available in five standard opening sizes: 3'0 x 7'0, 4'0 x 7'0, 6'0 x 7'0, 6'0 x 8'0, and 8'0 x 8'0. The 161SA is engineered to deliver a continuous, airtight perimeter seal on commercial hollow metal and wood fire-rated door openings, meeting some of the most demanding UL fire, positive pressure, smoke, and draft control certifications in the industry. Because every set is made to order, please allow 10–15 business days for production and shipment.
High-Performance Silicone Bulb Weatherstrip Features
- Fire-Door Rated Construction: UL-certified to ANSI/UL 10B (standard pressure) and ANSI/UL 10C (positive pressure), 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.
- Smoke & Draft Control Gasketing: Certified by UL to ANSI/UL 10C and ANSI/UL 1784 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.
- ANSI/BHMA A156.22 Certified: Gasketing is independently certified for heat and cold performance tests and listed in the BHMA Certified Products Directory, confirming compliance with the American National Standard for Door Gasketing and Edge Sealing Systems.
- Extreme Temperature Resilience: Dense silicone bulb remains flexible across a temperature range of -81°F to 300°F, making it well-suited for cold-storage, industrial, and high-heat environments.
- Flame- and Moisture-Resistant: The synthetic rubber polymer silicone compound is inherently flame-resistant and moisture-resistant, helping to maintain seal integrity in demanding environmental conditions.
- Excellent Ozone, UV, and Aging Resistance: Silicone's superior weathering properties guard against degradation from ozone exposure, ultraviolet radiation, and long-term aging, extending the service life of the perimeter seal.
- Excellent Flexibility and Memory: The dense bulb compresses under door closure and reliably returns to its original profile, maintaining consistent contact and sealing performance over repeated cycles.
- FM200 and Halon Compatible: Specifically recommended for facilities that use FM200 or Halon fire suppression systems, where chemical resistance of the seal material is critical.
- Military-Specification Aluminum: The extruded carrier is formed from Aluminum Alloy 6063, T5 Temper at .07" wall thickness, meeting military specification requirements for structural integrity and corrosion resistance.
- Stainless Steel Fasteners Furnished: #6 x 3/4" stainless steel sheet metal screws are included, with slotted screw holes in the carrier for field adjustment to achieve optimal compression and alignment.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 161SA |
| Product Type | Silicone Dense Bulb Perimeter Weatherstrip – Head-and-Jamb Set (1 head + 2 jambs) |
| Finish | Anodized Aluminum |
| Bulb Insert Material | Dense Silicone (Black) |
| Carrier Material | Aluminum Alloy 6063, T5 Temper |
| Carrier Thickness | .07" Aluminum |
| Section Profile | 7/8" x 5/16" |
| Application Method | Screw-applied to frame stop |
| Fasteners Included | #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 Rating – Standard Pressure | UL Certified to CAN/ULC-S104 and ANSI/UL 10B; hollow metal up to 3 hrs., wood up to 90 min. (NFPA 80, NFPA 252) |
| Fire Rating – Positive Pressure | UL Certified to ANSI/UL 10C; hollow metal up to 3 hrs., wood up to 90 min. (IBC, NFPA 80, NFPA 252) |
| Smoke & Draft Control | UL Certified to ANSI/UL 10C and ANSI/UL 1784 Category 'H'; complies with IBC and NFPA 105; 'S'-labeled positive pressure hollow metal doors up to 3 hrs., wood up to 90 min. |
| BHMA Certification | ANSI/BHMA A156.22 – Listed in BHMA Certified Products Directory |
| Flame Resistance | Yes – Synthetic Rubber Polymer Silicone |
| Moisture Resistance | Yes |
| Ozone / UV / Aging Resistance | Excellent |
| Fire Suppression Compatibility | Recommended for FM200 and Halon systems |
| Military Specification | Yes – .07" aluminum meets military specs |
| Stocking Status | Made to Order |
| Lead Time | 10–15 Business Days |
Pro-Tip for Perimeter Sealing
The NGP 161SA mounts surface-applied to the face of the door frame stop — no routing or mortising required. The slotted screw holes allow horizontal adjustment after initial fastening so installers can fine-tune bulb compression against the door face before driving screws fully home. Use the furnished #6 x 3/4" stainless steel sheet metal screws for consistent bite into hollow metal or wood frames. Install all three pieces (head and both jambs) as a continuous perimeter set to eliminate corner gaps and achieve the full UL-listed smoke, draft, and fire performance the 161SA is certified to provide.
| 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 | 7/8" x 5/16" (.07" aluminum) |
| 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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