EPY 2121N is a two-part epoxy–amine based sealant containing mica filler which impart high insulation resistance. This castable compound is designed to have pourable consistency and long work life, which result in void free filling of the cavities. Cure is achieved by the application of heat and the sealant exhibits good high and low temperature service capability.

Typical Properties / characteristics:



Colour and consistency

Grey viscous liquid

Viscosity at 30°C (ps)



Pot life

>3 hours.

Epoxy value (eq./kg)

3 – 4.5


Ambient (25-35°C) / 18 - 24hrs followed by 60 - 65°C/5hrs

Lap shear strength on Al-Al at RT

>100 ksc.



ISRO is willing to offer the knowhow of this technology to suitable entrepreneurs / industries in India. Capable manufacturing industries interested in acquiring this know-how and scale-up the technology, may write with details of their present activities, requirements and plans for implementation, infrastructure and technical expertise available with them, their own market assessment, if any, and plans for diversification to the address given below.

For further details, please contact: 

Smt U Sreerekha

Technology Transfer & Industrial Co-Ordination division (TT&IC)

Vikram Sarabhai Space Centre,

Thiruvananthapuram-695 022

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Ph: 0471-2564081, Fax: 0471-2564134