ULTRA SOFT FIN® Weatherseals

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ULTRA SOFT FIN® non-woven barrier protection provides an excellent seal for very low friction.

Ultrafab’s unique ultrasonic welding assembles the fin, fibers and backing into an integrated, unified assembly that won’t break apart during fabrication or while in use.




  • A soft, non-woven fabric fin in a unified assembly with self-supporting pile,and built-in ‘pile/fin directors’, provides an excellent seal with very low friction
  • Solid polypropylene backing inserts more easily, saving time and reducing waste
  • Pile height and backing width are always uniform because of Ultrafab’s unique non-woven manufacturing systems
  • ULTRA SOFT FIN® weatherseals have the structural integrity and consistency which assures a tight seal and barrier against air and water infiltration
  • No possibility of off-center pile that binds, breaks or stretches in an extrusion
  • Excellent for applications that require a quiet operating seal
  • Need more fins? Ask about TRI-FIN® with triple fins or side fins
ULTRA SOFT FIN® Weatherseal Choices
Pile Heights Inch
.130″ to .750″
3.30mm to 19.05mm
Pile Densities Light, Medium, High or Very High
Standard Backing Widths Inch
.187″ | .200″ | .210″ | .229″ | .270″ | .310″
4.75mm | 5.08mm | 5.33mm | 5.82mm | 6.86mm | 7.87mm
Backing Options Standard All backing widths
T-Loc® S7 – All standard backing widths except .229″; max pile height .500″
S9 – All standard backing widths including .229″; max pile height .500″
Roll-Loc® All standard backing widths; Max pile height .500″
Adhesive Available on .187″, .270″ and .310″
Colors Standard Black, White, Grey

Weatherseal Products

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