Momentive RTV664 is a two-part, addition (platinum) cure, high durometer silicone moldmaking material from the RTV600 series. It offers long work life and excellent chemical and abrasion resistance, and was designed for high production on manufacturing lines. It has high dimensional stability and tear strength, with virtually no shrinkage at room temperature cure. It is used for architectural and furniture molding and prototyping.
Typical Properties
- Base (RTV664A) beige, viscosity 153,000 cP, specific gravity 1.28; catalyst (RTV664B) blue
- Mix ratio by weight 10:1; mixed viscosity 120,000 cP
- Work life 2 hours; pot life 3 hours; demold time 18 hours
- Hardness 62 Shore A; tensile 933 psi; elongation 245%; tear 122 ppi
- Service temperature −60 to 200 °C; linear shrinkage below 0.2%
Use
- Cures sufficiently in 24 hours at 25 °C; elevated temperature speeds cure
- Deaerate the mix at about 29 in Hg vacuum
| Packing | 5 KG or 20 KG |