Pemko S773 Fire and Smoke Door...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$157.05
$34.65
Pemko S773 fire and smoke door gasketing installed in door frame corner, showing adhesive-backed silicone seal in white finish

Pemko S773 Fire and Smoke Door Gasketing with Adhesive Backing - 3/8" x 1/2" High Temperature Silicone

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Model: S773BL17
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$157.05
$34.65
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Pemko S773 Fire & Smoke Door Gasketing with Adhesive Backing

The Pemko S773 is an adhesive-backed fire and smoke perimeter gasket for commercial door frame applications. Its triple-fin, high-temperature silicone profile (3/8" H x 1/2" W) seals against smoke, fire, air, sound, and weather in a single strip - no additional fasteners required. UL10C fire rated with positive pressure testing up to 3 hours; UL1784 smoke tested; Greenguard Gold certified for indoor air quality.

Features & Benefits

  • Triple-Fin Silicone Profile: Three sealing fins compress evenly against the door stop, blocking light, sound, smoke, and air infiltration without impeding door latching.
  • Adhesive-Backed Installation: Peel-and-stick backing bonds directly to the door frame - no screws, clips, or additional hardware needed.
  • High-Temperature Silicone: Self-extinguishing, non-toxic material performs reliably under extreme heat; unaffected by sunlight, ozone, UV, fungus, and mildew.
  • Multi-Hazard Sealing: A single gasket addresses fire, smoke, air infiltration, sound transmission, and weather - simplifying specification and installation.
  • 5-Year Manufacturer Warranty: Backed by Pemko's standard warranty for commercial-grade confidence.

Technical Specifications

  • Profile Dimensions: 3/8" H x 1/2" W
  • Material: High-temperature silicone (self-extinguishing, non-toxic)
  • Fire Rating: UL10C Positive Pressure, up to 3 hours
  • Smoke Rating: UL1784 Smoke Tested
  • Sound Rating: ASTM E90 Sound Tested
  • Air Infiltration: Air Infiltration Tested
  • Certifications: BHMA Certified, Intertek/Warnock Hersey, Greenguard Gold Certified
  • Application: Commercial door frames (perimeter/head/jamb)
  • Available Colors: Black, Dark Brown, Gray, White Silicone
  • Available Lengths: 17", 18", 20", 21", 25", 30", 250", 510"
  • Warranty: 5 Year

Typical Applications

  • Commercial fire door perimeter sealing
  • Healthcare and education facility fire code compliance
  • Multi-family and hospitality fire door upgrades
  • Government and municipal building fire barriers
  • Industrial facility smoke and fire compartmentalization

Product Specs

Features:
Triple Fin Gasketing Design Effectively Blocks Light and Sound From Infiltrating a Room
Application:
Doors
Warranty:
5 Year
Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Gaskets
Subcategory:
Gaskets & Weatherstripping
ANSI/BHMA:
UL10C Fire Rated (Positive Pressure); UL1784 Smoke Tested; ASTM E90 Sound Tested; Air Infiltration Tested; BHMA Certified; Intertek/Warnock Hersey; Greenguard Gold Certified
Commercial/Residential:
Commercial
Product Model:
S773
Product Dimension:
H: 3/8", W: 1/2"
Product Category:
Door Trim and Accessories
Product Substrate:
Silicone
Department:
Door Hardware

Pemko S773BL17 – Frequently Asked Questions

1) How much room does the S773 gasket need on the door stop, and will it stop the door from latching?
The S773 profile is 3/8 inch high by 1/2 inch wide, so you need a 1/2 inch flat face on the stop to bond it to. The three fins compress against the door face as it closes, which is what lets it seal without holding the door off the stop or interfering with latching. On a frame with a narrow or rabbeted stop, measure the flat before ordering.
2) Do I need screws or clips to install Pemko S773 gasketing?
No fasteners. The S773 is adhesive backed: you clean the stop, peel the liner, and press the silicone into place. That makes it the option for retrofitting existing frames where you do not want to drill a labeled frame or deal with kerf prep. If your frame already has a kerf slot cut in the stop, a kerf-mounted gasket is the better fit for that opening instead.
3) Does the S773 gasket seal the bottom of the door too?
No. The S773 is a perimeter gasket for the head and jambs only, applied to the frame stop. The gap under the door is a separate part, a door bottom, sweep, or automatic door bottom, plus a threshold if the opening needs one. On a smoke-rated assembly you need both, so order the bottom sealing separately.
4) Is silicone gasketing better than vinyl or foam weatherstripping for a fire door?
For a labeled fire door, silicone is the material that carries the rating. The S773 uses high-temperature silicone that is self-extinguishing and non-toxic, and it holds up to sunlight, ozone, UV, fungus, and mildew, so it does not harden and crumble the way foam and some vinyls do after a few seasons. Foam weatherstrip is fine on a residential exterior door; on a rated commercial opening it is not.
5) Will the S773 gasket cut down noise and light leaking around a door?
Yes on both. The triple-fin design blocks light and sound from getting into a room, and the profile is ASTM E90 sound tested. It also passed air infiltration testing, so the same strip handles draft and HVAC loss along with the acoustic job. That is why it turns up on hotel corridors and classroom doors where the complaint is noise, not fire code.
6) Is Pemko S773 gasketing acceptable for a LEED or indoor air quality spec?
The S773 is Greenguard Gold Certified, which is the low chemical emissions listing specifiers look for on interior products in schools and healthcare. The material itself is non-toxic silicone. That is the certification to cite on the submittal.
7) What colors does the Pemko S773 silicone gasket come in?
Four: Black, Dark Brown, Gray, and White silicone, and every one of them is offered in the full length range from 17 inches up to the 510 inch coil. Property managers matching a floor of existing frames usually go with the color closest to the frame paint, since the gasket sits visible on the stop face.
8) Can I use the S773 gasket on a residential exterior door?
It will physically work anywhere there is a 1/2 inch flat stop face, but the S773 is built and rated for commercial door frames, head and jamb. If the goal is house weatherstripping you are paying for a UL10C fire rating you have no use for. Where it does earn its place on a home is a fire-rated garage-to-house door, since that opening is code-rated.
How fast can I get the Pemko S773BL17 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Pemko S773BL17 come with a warranty?
Absolutely. The Pemko S773BL17 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Pemko S773BL17?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Pemko S773BL17 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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