Foster 35-00 Sealfas G-P-M Mastic | GLT Products

Foster 35-00 Sealfas G-P-M Mastic

Foster® 35-00™ (trowel/glove) Sealfas G-P-M® Mastic is a high solids water-based general purpose mastic having excellent trowel and spray properties. Sealfas G-P-M Mastic is used for the protection of thermal insulation and hard, dry cement coats, both indoors and outdoors.


  • Fire-resistive.
  • Ease of application.
  • Non-flammability
  • Non-toxicity.
  • Mild odor.
  • Insulation compatibility.
  • Good package stability.
  • Excellent outdoor durability.
  • Meets NFPA 90A & 90B 25/50 requirements.
  • Produced under the  classification and follow-up service of Underwriter's Laboratories, Inc.
  • Conform with current requirements regarding use in meat and poultry processing areas under federal inspection. 
  • Letter of certification is available upon request.
  • Meet the stress corrosion and chemical analysis requirements of MIL-I-24244C or nuclear regulatory guide 1.36 on special order.
  • No asbestos, lead, mercury, or mercury compounds.
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