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Pemko PK33BL Adhesive-Backed Fire/Smoke PemkoPrene Seal - Black
The Pemko PK33BL is an architectural-grade Adhesive-Backed Perimeter Seal engineered for superior fire and smoke containment. Manufactured from PemkoPrene, a high-performance synthetic rubber, this gasket is specifically designed for tighter door frames where standard bulb seals might interfere with latching. It provides a robust, multi-functional barrier against smoke, fire, sound, and weather, while its Black finish offers a clean, contemporary look for modern hardware sets.
High-Performance & Durability Features
- Low Closing Force: Engineered to begin compressing at 3/16" and effectively seal gaps up to 1/16", ensuring a tight seal with minimal resistance when closing the door.
- Extreme Weather Resistance: The PemkoPrene material is exceptionally durable and unaffected by sunlight, ozone, or UV rays, preventing the cracking and degradation common in lower-quality vinyl seals.
- Hygienic & Biological Shield: Naturally impervious to fungus and mildew, making it an ideal choice for hospitals, labs, and humid environments where maintaining a clean seal is critical.
- Life Safety Certified: Rigorously tested under UL 10C (Fire) and UL 1784 (Smoke). It is rated for use on steel frames and hollow metal doors for up to 3 hours and wood core doors for 20 minutes.
- Non-Toxic & Self-Extinguishing: The high-temperature material is designed to be safe and non-toxic, ensuring it meets strict commercial building codes.
Technical Specifications
- Manufacturer: Pemko (ASSA BLOY)
- Model: PK33BL (Black)
- Material: PemkoPrene (High-performance synthetic rubber)
- Available Lengths: 17', 20', 25', and 510' coils.
- Application: Pressure-sensitive adhesive backing for "peel and stick" installation.
- Ratings: BHMA Certified, GREENGUARD Gold Certified, and Category G/J Edge-Sealing System.
Pro-Tip for Facility Managers
The Pemko PK33BL is the ideal "retrofit" solution for fire doors that are difficult to close. Because it requires such a low closing force, it helps ensure that doors latch reliably every time—a critical requirement for fire inspections. For the best results, ensure the frame header and jambs are cleaned with an alcohol-based wipe to remove all dust and oils before application. This ensures a permanent bond that won't peel away under high-traffic use.
| Gasketing Set Size | 17 ft Roll or 20 ft Roll |
| Mounting Type | Adhesive Applied |
| Brand | Pemko |
| Insert Material | Silicone |
| Gasketing Finish | Black |
| Fire Rated | Fire Rated |
| Smoke Rated | Smoke Rated |
| Weatherstripping Type | Perimeter Gasketing |
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