Sigrist Exit Seals®

Approaching 20,000 installed on commercial roofs from coast to coast

Won’t rust or oxidize or conduct cold and heat like metal

Limited Lifetime Warranty

  • Two Lengths – Standard fits walls up to .75” thick X-Long for walls up to 8.5” thick
  • Create a weather-tight pipe/line seal for roof and 8.5” wall penetrations
  • Create a weather-tight pipe/line seal for roof penetrations
  • Injection molded ABS resin with UV inhibitors – to Schedule-80 strength
  • Durable and long lasting EDPM rubber gaskets
  • 11 common pathway sizes (1/4” to 1 5/8” OD)

Sigrist Exit Seal®

Extra-long—for walls up to 8.5” thick

Image to the right shows a roof-top installation using 4 Sigrist Exit Seals® on our “Small” Sigrist Pipe Chase Housing and Curb system.

Sigrist Exit Seals® are used to create a weather-tight pathway through vertical walls with a smooth exterior. Galvanized or painted

Maximum installable wall thicknesses: Standard= 3/4” & XL = 8.5” walls

Our Exit Seals work just as well on your doghouses as they do on ours.

We steadfastly manufacture all of our ALTA products in the United States of America.



Material Properties and Temperature Ranges

ABS Tensile strength 6,600 PSI
ABS Flexural strength 10,800 PSI
*ABS Exit Seal components -22F to +176F/185F
EPDM Gaskets: -20F to +350F

*Even at –22F ABS still has an impact resistance of 4.3Ft/Lbs In. The 185F ABS high range represents no deformation of material In continual-service air temperature.