Hernon® Silastomer 334 is a high performance, single component, ready-to-use silicone adhesive sealant. It has a paste-like consistency and cures to a tough, resilient and durable silicone rubber on exposure to moisture in the air. Since it will not flow under its own weight, it can be applied to vertical, horizontal and overhead joints without sagging. It adheres to clean metals, glass, most woods, silicone resin, vulcanized silicone rubber, natural and synthetic fibre, ceramic, many plastics and painted surfaces. It offers excellent resistance to moisture, weathering, vibration, ozone and extreme temperatures; fully cured, it withstands extended periods at up to 204 °C.
Specifications
- MIL-A-46106B Type I; NSF/ANSI Standard 51; FDA 21 CFR 175.105 (incidental food contact)
Typical Properties
- Acetoxy polysiloxane; white thixotropic paste; specific gravity 1.007
- Tack-free time 30 min; full cure of a 6 mm bead in 24 hours; shrinkage below 5%
- Hardness 18–30 Shore A; elongation at least 350%; tensile strength at least 175 psi
- Peel strength (aluminium/stainless steel) at least 15 ppi
- Service temperature −57 to 204 °C; application temperature −18 to 50 °C; dielectric strength at least 25 kV/mm
Use
- Wipe surfaces with acetone or mineral spirits; do not use alcohol
- Releases a small amount of acetic acid during cure; assemble parts within a few minutes of dispensing
| Packing | 3 OZ or 300 ML |