Quick decision: Match the mounting interface first, then measure the cross-section. Similar outer shapes are not evidence that two seals are interchangeable.
Decision question
Is the component fixed to the floor/threshold, or attached to the moving door bottom?
Threshold / floor seal
- The sealing component is fixed at the floor/threshold line.
- The moving door contacts it when closed.
Measure or record:
- threshold width/height
- mount method
- closed-door contact location
Door-bottom seal
- The sealing component moves with the door.
- It may be a sweep, shoe, automatic door bottom, or garage bottom insert depending context.
Measure or record:
- door-bottom assembly geometry
- seal projection
- mount/retainer interface
Stop rule
Location and mounting are part of identity. A floor-mounted threshold is not a moving-door insert.
Profiles to inspect next
- Flexible blade / fin sweep — interface: surface-mounted sweep holder or direct mount
- Brush sweep — interface: surface-mounted holder / retainer
- Door shoe with flexible insert — interface: shoe wraps or caps door bottom
- Automatic door bottom — interface: surface|semi-mortise|full-mortise assembly
- Floor-mounted threshold seal — interface: adhesive / floor mount
How to verify your sample
Use the measurement guide for the geometry you can observe. If the mounting interface or a critical dimension differs, treat the profiles as different and stop before making a fit claim. Exact compatibility needs separate product- or application-specific evidence.
Provenance
- Source — U.S. Department of Energy, Job Aid 11-1: Install Weatherstripping on an Exterior Door — https://www.energy.gov/cmei/scep/wap/articles/job-aid-11-1-install-weatherstripping-exterior-door — supports: Exterior-door weatherstripping and sweep are distinct but complementary components.
- Source — Pemko / ASSA ABLOY, 90062 Series Nylon Brush Gasket — https://www.pemko.com/en/products/brush-weatherstripping/product-details-nm.aehpdp-90062-series-ag_pemko_12054 — supports: Brush gasket used as a door-bottom sweep; holder/retainer plus brush is an assembly distinction.
- Source — Pemko / ASSA ABLOY, Everything You Wanted to Know About Pemko — https://www.pemko.com/content/pemko/us/en/resource-library/knowledge-center/blog/blog-post.aehdynamic-everything-you-wanted-to-know-about-pemko-636abfafabed64003d9ab061_pemko.html — supports: Door bottoms include sweeps, shoes and automatic door bottoms; brush-seal terminology.
- Source — Garaga, Garage Door Weather Stripping & Seals Made Easy — https://www.garaga.com/garage-door-parts/weatherstripping — supports: Garage perimeter/doorstop, threshold and inter-panel/joint-gasket distinctions.
This comparison uses the cited public sources and keeps terminology, observed geometry and exact fit as separate claims. The included schematic is original and intentionally generic.