Polyvest Refractory Investment, 24/60 g Preweighed Packets - Whip-Mix Corporation
Polyvest Refractory Investment is a fine grained material for smooth surfaces and accurate reproduction.
- High strength allows multiple firings, resists fractures and abrasions
- Compatible with porcelains with CTE of 13.9 or lower
- Mixing ratio: 22/100
- Working time: 2 minutes
- Thermal expansion: 0.65%
- 6500 psi