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National Guard Products 161SDKB Silicone Dense Bulb Perimeter Weatherstrip Set – Dark Bronze
The National Guard Products (NGP) 161SDKB is a Silicone Dense Bulb Perimeter Weatherstrip Head-and-Jamb Set finished in Dark Bronze with a black dense silicone bulb insert. Engineered from Aluminum Alloy 6063-T5 extrusion (.07" aluminum) and paired with a synthetic rubber polymer silicone bulb, this screw-applied perimeter seal delivers a tight, durable barrier against air infiltration, smoke, draft, and fire for commercial hollow metal and wood door openings. Each set includes one head piece and two jamb pieces, custom cut to one of five available 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 — making it suitable for standard single and pair openings across a wide range of commercial, institutional, and industrial applications. Because the 161SDKB is made to order, please allow 10–15 business days for production and shipment.
High-Performance Perimeter Weatherstrip Features
- Dense Silicone Bulb Seal: The black dense silicone insert maintains excellent flexibility and memory across an extreme temperature range of -81°F to 300°F, ensuring a consistent, compression-fit seal in hot or cold climates.
- Flame- and Moisture-Resistant Construction: The synthetic rubber polymer bulb is both flame-resistant and moisture-resistant, protecting the door perimeter from water infiltration and meeting the demanding requirements of rated fire door assemblies.
- Ozone, UV, and Aging Resistance: Silicone chemistry delivers outstanding resistance to ozone, ultraviolet exposure, and long-term environmental aging — extending service life in exterior and high-exposure applications.
- FM200 and Halon Compatible: Specifically recommended for facilities utilizing FM200 or Halon fire suppression systems, where chemical compatibility of door perimeter seals is critical to system integrity.
- UL-Certified Fire Door Rating: Certified by UL to CAN/ULC-S104 and ANSI/UL 10B, and under Positive Pressure to ANSI/UL 10C, for application to hollow metal fire doors rated up to 3 hours and wood fire doors rated up to 90 minutes; complies with NFPA 80 and NFPA 252.
- Smoke and 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 rated up to 3 hours and wood fire doors rated up to 90 minutes.
- ANSI/BHMA A156.22 Certified: Certified gasketing complies with the American National Standard for Door Gasketing and Edge Sealing Systems and is listed in the BHMA Certified Products Directory; heat and cold performance verified per ANSI/BHMA A156.22 test protocols.
- Military-Spec Aluminum Extrusion: Constructed from .07" Aluminum Alloy 6063, T5 Temper meeting military specifications for durability and dimensional consistency.
- Dark Bronze Finish: The Dark Bronze (DKB) anodized-look aluminum extrusion coordinates with Dark Bronze door frames and hardware for a cohesive architectural appearance.
- Head-and-Jamb Set Configuration: Sold as a complete 3-piece perimeter set (1 head + 2 jambs) pre-cut to your selected opening size, simplifying ordering and installation on new or replacement commercial door assemblies.
- Five Opening Sizes Available: Choose from 3'0 x 7'0, 4'0 x 7'0, 6'0 x 7'0, 6'0 x 8'0, or 8'0 x 8'0 to match single door, oversized single, or double-door openings.
Technical Details
| Manufacturer | National Guard Products (NGP) |
| Model Number | 161SDKB |
| Product Type | Silicone Dense Bulb Perimeter Weatherstrip Head-and-Jamb Set |
| Finish | Dark Bronze (DKB) |
| Bulb Insert Material | Dense Silicone (Black), Synthetic Rubber Polymer |
| Extrusion Material | Aluminum Alloy 6063, T5 Temper |
| Aluminum Thickness | .07" (Military Spec) |
| Typical Section Profile | 7/8" x 5/16" |
| Set Configuration | 1 Head + 2 Jambs (3-piece perimeter set) |
| 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 |
| Application Method | Screw-applied to the frame stop |
| Fasteners Furnished | #6 x 3/4" Stainless Steel Sheet Metal Screws |
| Screw Hole Type | Slotted for field adjustment |
| Temperature Range | -81°F to 300°F; remains flexible at extreme temperatures |
| Flame-Resistant | Yes |
| Moisture-Resistant | Yes |
| Ozone / UV / Aging Resistance | Excellent |
| Fire Suppression Compatibility | Recommended for FM200 and Halon fire suppression systems |
| UL Fire Rating – Standard Pressure | Certified by UL to CAN/ULC-S104 and ANSI/UL 10B; hollow metal doors up to 3 hours, wood doors up to 90 minutes; complies with NFPA 80 and NFPA 252 |
| UL Fire Rating – Positive Pressure | Certified by UL to ANSI/UL 10C; hollow metal doors up to 3 hours, wood doors up to 90 minutes; complies with IBC, NFPA 80 and NFPA 252 |
| Smoke & Draft Control | Certified by UL to ANSI/UL 10C and ANSI/UL 1784 Category 'H'; complies with IBC and NFPA 105 for 'S'-labeled Positive Pressure hollow metal doors up to 3 hours and wood doors up to 90 minutes |
| BHMA Certification | Certified to ANSI/BHMA A156.22; listed in BHMA Certified Products Directory |
| Availability | Made to Order |
| Lead Time | 10–15 business days |
Pro-Tip for Perimeter Sealing
The NGP 161SDKB is designed for surface application directly to the frame stop on hollow metal or wood door frames. The furnished #6 x 3/4" stainless steel sheet metal screws resist corrosion over years of service, and the slotted screw holes allow you to fine-tune the lateral position of each piece after initial mounting — a critical advantage when working with frames that have minor dimensional variation. Install the head piece first, then the two jamb pieces, ensuring the dense silicone bulb makes consistent contact with the door face around the full perimeter for an effective air, smoke, and fire seal.
| 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 | Dark Bronze |
| 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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