LORD- Circalok 6708 RTV Silicone Rubber

Lord Circalok™ 6708 is a thermally conductive silicone rubber with good electrical properties. It is supplied as a two part liquid system which cures with minimal shrinkage to a flexible rubber with high temperature stability. Cure is affected at room temperature in 12 to 24 hours and the cure time can be reduced by applying heat up to 65°C (149°F). Use of external heat can resultin a shrinkage factor of up to 1.5%. As a stress free encapsulant for electrical units, Lord Circalok™ 6708 6708 provides long lasting environmental protection and maintains a high dielectric strength and good volume resistivity over a wide temperature range. As a mold material, its thermal conductivity helps to dissipate the exotherm of casting resins and to shorten oven cure times. The viscosity of Lord Circalok™ 6708 may be reducedby the addition of up to 5% Lord S-1285 diluent (Circalok™6722); and it can be thickened to a paste consistency by the addition of 1 to 3 % Filler T.

• Stress-free electrical encapsulant
• Repairable, heat conductive adhesive-sealant
• Flexible molds

Specific Gravity@ 25°C: 1.67
Viscosity@ 25°C, cps (Uncatalyzed): 30,000
Standard Color: White (available in Black)
Shelf Life (months): 6
(from date of shipment in closed containers)

Tensile Strength@ 25°C, psi: 350
Tensile Elongation, % @ yield: 150
Water Absorption, 10 days @ 25°C, %: 0.1
Linear Shrinkage, in/in: 0.003
Service Temperature,°C
    Continuous: -55 to 205
    Intermittent: -100 to 300
Hardness, Shore A: 60

*Actual product colours may vary from on-screen and printed representations.