Cal-Royal C-880 Silicone Adhes...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$28.62
$20.26
Cal-Royal Cal-Royal C-880 Silicone Adhesive Weatherstrips CAL-C-880

Cal-Royal C-880 Silicone Adhesive Weatherstrip for Wood and Hollow Metal Frames

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Model: C-880B-17
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$28.62
$20.26
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Cal-Royal C-880 Silicone Adhesive Weatherstrip for Wood and Hollow Metal Frames

The Cal-Royal C-880 Silicone Adhesive Weatherstrip is an energy-efficient door sealing solution engineered to restrict air, light, smoke, and insects from around the door opening. Constructed from silicone rubber with 3M adhesive tape, this weatherstrip begins compressing at 1/4" and compresses to seal gaps up to 1/16", making it suitable for both wood and hollow metal frames. Its high-temperature tolerance and self-adhesive backing make installation simple and cost-effective for commercial door applications.

Key Features

  • Compression Range: Seal begins compressing at 1/4" and compresses to seal gaps up to 1/16" for a reliable, tight seal.
  • High-Temperature Performance: Effective between -58°F and 450°F, ensuring durability across extreme temperature swings.
  • Premium Construction: Made from silicone rubber with 3M adhesive tape for strong initial adhesion and long-term holding power.
  • Simple, Cost-Effective Installation: Self-adhesive design provides an easy way to create a seal around your door frame without complex tools.
  • Non-Toxic and Self-Extinguishing: Resistant to sunlight, ozone, oxidation, weather, water, and flames for long-lasting outdoor and indoor performance.
  • Mildew and Fungus Resistant: Impermeable to mildew and fungus and will not degenerate under normal exposure conditions.
  • Frame Compatibility: Designed for use with both wood and hollow metal door frames, offering flexible application across door types.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Type: Weatherstripping
  • Subcategory: Gaskets & Weatherstripping
  • Commercial/Residential: Commercial
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Cal-Royal C-880?

Cal-Royal weatherstripping products are engineered and tested for durability and reliable performance, meeting or exceeding industry standards for energy-efficient door sealing. The silicone rubber construction with 3M adhesive tape delivers strong, long-term holding power along with resistance to sunlight, ozone, oxidation, weather, water, and flames. Engineered for demanding commercial applications where dependable sealing performance and easy installation are essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Weatherstripping
Subcategory:
Gaskets & Weatherstripping
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal C-880B-17 – Frequently Asked Questions

1) What size gap will the Cal-Royal C-880 weatherstrip actually seal?
The C-880 silicone seal starts compressing at 1/4 inch and compresses down to seal gaps as small as 1/16 inch. So if the gap between your door and the stop falls anywhere in that 1/16 to 1/4 inch band, the seal makes contact and closes it. A gap wider than 1/4 inch won't be reached by this profile, and you'd want a heavier adjustable jamb seal instead.
2) Can I use this silicone weatherstrip on a hollow metal frame, or is it only for wood?
Both. The C-880 is made for wood and hollow metal door frames. It mounts with 3M adhesive tape rather than screws or a kerf, so it sticks to the face of the stop on either frame material. Clean the stop down to bare, dry, oil-free surface first, since adhesive-backed gasketing is only as good as the surface it lands on.
3) What lengths does the Cal-Royal C-880 come in, and how do I figure out what I need for a full opening?
Five lengths are offered: 17, 20, 25, 204, and 510 inches. The short pieces suit single-leg or head-only repairs. For a full single opening you're gasketing two jambs plus the head, so a standard 7-foot door runs roughly 84 + 84 + 36 inches of perimeter, and the 204 inch piece covers one opening with margin. The 510 inch coil is the choice when you're doing a run of openings in one pass.
4) Is the Cal-Royal C-880 a fire-rated or smoke-rated gasket?
Treat the C-880 as a general-purpose perimeter seal for air, light, smoke and insect infiltration on commercial openings. If your opening needs a gasket carried under a fire label, look at a purpose-built fire-rated product instead, such as the Pemko 68 fire-rated door top weatherstrip with black sponge neoprene insert, or for smoke and draft control the Hager 862S with neoprene insert. Those are the ones specified when the drawing calls out a rating.
5) My door gaps are uneven from frame to frame across the building. Is adhesive silicone the right fix?
Only if the gaps sit in the 1/16 to 1/4 inch window the C-880 compresses across. Older frames that have racked often show bigger or inconsistent margins, and a fixed-profile adhesive seal will either miss on one leg or bind on the other. For those openings use an adjustable jamb seal, like the Hager 864S clear anodized aluminum adjustable jamb weatherstrip with neoprene insert, so you can dial each leg in. Use the C-880 on the openings that measure in range and the adjustable on the outliers.
6) What is a kerf-in alternative to the Cal-Royal C-880 adhesive weatherstrip?
The Cal-Royal C-880 is a silicone rubber seal with 3M adhesive tape that presses onto the face of a wood or hollow metal frame, so it needs no frame prep. If the frame already has a kerf slot cut in it, the Pemko Q103W is a kerf-in foam weatherstrip with an extended flange measuring 1-1/4 inch by 3/16 inch and is fire rated. The choice comes down to the frame: adhesive-applied for a flat stop face, kerf-in for a slotted frame.
7) If I need a fire-rated gasket for the head of the opening, what should I look at instead of the Cal-Royal C-880?
The Cal-Royal C-880 is a silicone adhesive weatherstrip rated for service between -58 degrees F and 450 degrees F and described as self-extinguishing, but for a head-of-door application where a fire rating is called out on the drawing, the Pemko 68 is a fire-rated door top weatherstrip supplied in a 40 inch length with a black sponge neoprene insert. The Pemko Q103W is also fire rated and installs into a kerf.
8) My frame is out of square and the gap varies down the jamb - will the Cal-Royal C-880 handle it?
The Cal-Royal C-880 is a fixed-position adhesive seal that begins compressing at 1/4 inch and compresses to seal gaps up to 1/16 inch, so it accommodates variation only within that compression range. Where the jamb gap swings wider than the seal can take up, the Hager 864S is an adjustable jamb weatherstrip in clear anodized aluminum with a neoprene insert, supplied in an 84 inch length, and the housing can be shifted to suit the actual gap.
9) Does this weatherstrip come in anything besides black?
Black and white are the two finishes, and both are offered in all five lengths, 17, 20, 25, 204 and 510 inches. White is the usual pick against painted wood frames and light hollow metal; black disappears against dark frames and anodized aluminum trim.
10) Will silicone weatherstrip hold up next to a boiler room or mechanical room door?
Temperature range on the C-880 is -58F to 450F, which covers hot mechanical spaces and cold exterior service doors alike. The silicone rubber is also non-toxic and self-extinguishing, and resists sunlight, ozone, oxidation, water and flame, plus it won't grow mildew or fungus. That last point matters in humid areas like natatoriums, laundries and kitchen back-of-house.
11) Should I use adhesive-backed weatherstrip or a kerf-in type on my door frames?
It comes down to what the frame is prepped for. The C-880 is adhesive-applied silicone, so it goes onto an existing frame with no machining, which is why it's the retrofit answer on occupied buildings. If your frames are already kerfed, a kerf-in product like the Pemko Q103W foam weatherstrip drops into the slot and holds mechanically instead of relying on tape. Kerf-in survives abuse and repainting better; adhesive wins when you can't cut the frame.
12) Do I need any screws, tools, or fasteners to install this weatherstrip?
No fasteners. The C-880 carries 3M adhesive tape on the back, so it's a peel-and-press install, cut to length and set against the stop. That's why it works for occupied-building maintenance where you can't be drilling frames. If you prefer a press-on seal from another brand, the Hager 726S smoke seal weatherstrip is also a press-on installation.
13) Is the Hager 726S the same kind of product as the Cal-Royal C-880?
They are close in installation method but not identical in purpose. Both are press-on seals that adhere to the frame with no machining. The Hager 726S is a smoke seal weatherstrip with press-on installation in a charcoal finish. The Cal-Royal C-880 is a silicone rubber seal with 3M adhesive tape that begins compressing at 1/4 inch and closes gaps down to 1/16 inch, offered in black and white.
14) What is the difference between the Cal-Royal C-880 and the Hager 862S for smoke and draft control?
The Hager 862S is a 48 inch weatherstrip with a neoprene insert intended for smoke and draft control, so it is a housing-and-insert assembly in a set length. The Cal-Royal C-880 is a one-piece silicone rubber seal with 3M adhesive backing and is stocked in lengths of 17, 20, 25, 204 and 510 inches, which lets you cut jamb and head pieces or run continuous stock. Silicone is also rated to 450 degrees F on the C-880, where the 862S carries a neoprene insert.
15) I want one seal I can standardize across a building - which of these covers the most openings?
The Cal-Royal C-880 is the broadest fit of the group for a standardization program: it suits both wood and hollow metal frames, installs with 3M adhesive tape rather than frame prep, comes in black and white, and is stocked from 17 inch pieces up to 510 inch coil stock so one item covers jambs, heads and long runs. The alternatives are more opening-specific - the Pemko 68 is a door top weatherstrip in a 40 inch length, and the Pemko Q103W requires a kerfed frame.
16) Is the C-880 meant for commercial buildings or residential doors?
Cal-Royal classes the C-880 as a commercial door hardware item, and it's used on office buildings, schools, healthcare, retail, industrial and warehouse space, multi-tenant residential and government buildings. Nothing stops it working on a residential door, but the spec and the temperature range are aimed at commercial openings.
17) Can I use the Cal-Royal C-880 where an aluminum housing weatherstrip was removed?
You can, provided the stop face is flat and clean, because the Cal-Royal C-880 is an adhesive-mounted silicone seal that needs no screw holes or housing. What changes is the appearance and the gap it takes up: it begins compressing at 1/4 inch and seals gaps to 1/16 inch, and it is finished in black or white. An aluminum-housed replacement in kind would be something like the Hager 864S, a clear anodized aluminum adjustable jamb weatherstrip with a neoprene insert in an 84 inch length.
How fast can I get the Cal-Royal C-880B-17 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 Cal-Royal C-880B-17 come with a warranty?
Absolutely. The Cal-Royal C-880B-17 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 Cal-Royal C-880B-17?
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
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