FM012 Firestop Putty

FM012 Firestop Putty is an industry leading Elastomeric paste, with fast reacting intumescent properties, designed to seal gaps around through- penetrations and block the passage of flame, toxic fumes and smoke. FM012 Firestop Putty’s Listed designs offer exceptional performance and use less product, making it more cost effective than other traditional firestop putties.


Technical Data

Types of Applications

Test Standards, Codes Compliance

  • ASTM E 814, 2hrs. F and T Rating
  • UL 1479, 2hrs. F and T Rating
    • L Rating at Ambient – Less than 1 cfm/sq. ft.
  • FM Approved
  • ASTM E84 Flame 0 Smoke 25
  • CNS 14514, 3hrs. Class A
  • GB 23864
  • ASTM E662