Sale! BOSS 125 Multi-Seal Kynar 500 Roofing Construction Sealant Colors
Boss 125 Multi-Seal Hybrid SealantBOSS 125 Multiseal bonds to Kynar 500Boss 125 Multi-Seal 2020 VOC compliantBoss 125 Multi-Seal 2020 VOC All Weather SealantBOSS 125 Multi-Seal Roofing Construction Sealant demoBoss 125 Multi-Seal Color Chart Sealant Building Construction Roofing Bonds to Kynar 500 Conspec Materials


Conspec Family Business BadgeConspec Warranty BadgeOne-part, moisture-curing, gun-grade Polyether sealant

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BOSS – 125 Multi-Seal Construction Sealant 10-oz Tube

BOSS – 125 Multi-Seal Construction & Roofing Sealant is a multipurpose, one part sealant, formulated with USP™ Technology. This unique sealant is free from solvents and isocyanates. It cures on exposure to atmospheric moisture to form a highly durable flexible sealant. BOSS® 125 Multi-Seal® has been formulated to offer outstanding primerless adhesion to most common building materials including vinyl, aluminum, steel, concrete, wood, glass & Kynar 500®. It can be applied and tooled under most weather conditions. This sealant is paintable with most latex base paints*. Non-yellowing and non-staining, Non-streaking. VOC Compliant in all 50 states, & Qualifies for LEED Credits.

  • Wide temperature gunnability; can be applied in any season Primerless adhesion to damp and non-porous surfaces
  • VOC compliant in all 50 States
  • Ease of use, one-part adhesive sealant, no mixing required
  • Good weatherability – virtually unaffected by sunlight, rain, snow, ozone, and temperature extremes
  • Good UV resistance and color stability
  • Long life reliability; cured sealant stays flexible without tearing, cracking, drying out, or becoming brittle.
  • With its non slump properties, can be used in vertical, horizontal and overhead joints
  • Paintable with most latex paint
  • Non-yellowing and non-staining, Non-Streaking
  • Applies at -35°F to 140°F
  • Free from solvents and isocyanates
  • Paintable under an hour
  • Bonds to wet, damp surfaces
  • Long lasting, Flexible adhesive
  • Bonds to Kynar 500®
  • Bonds to most common building materials
  • Qualifies for LEED Credits
  • Available in 14 standard colors; White, Redwood Tan, Hunter Green, Brown, Gray, Medium Bronze, Off White, Limestone, Tan, Special Bronze, Stone, Black, Aluminum Gray, and Translucent



To view the most recent Technical Data Sheet, please click here.


Weight 20 oz
Dimensions 2 x 2 x 15 in
Product Color

Aluminum Gray, Black, Brown, Gray, Hunter Green, Limestone, Medium Bronze, Off White, Redwood Tan, Special Bronze, Stone, Tan, Translucent, White

Product Size

10-oz Cartridge

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