Foster 81-27 Fibrous Adhesive | GLT Products

Foster 81-27 Fibrous Adhesive

Foster® 81-27™ Fibrous Adhesive is a sodium silicate-based incombustible adhesive for bonding calcium silicate and expanded perlite thermal insulation to itself and to non-porous surfaces. It offers maximum adhesion and optimum working qualities and it forms a hard, brittle, incombustible film.

Nuclear Grade Fibrous Adhesive 81-27 can be supplied to meet the stress corrosion and chemical analysis requirements of MIL-I-24244C or Nuclear Regulatory Guide 1.36 on special order.


  • Can also be used for lagging high temperature alkali resistant cloth on high temperature insulation.

Suggested Use:

  • Attachment: Best
  • Joint and Fitting Fabrication: Best

Insulation Type:

  • Calcium Silicate: Best
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