General Characteristics
SS expanded cellular silicone rubber has a predominantly closed cell structure with an integral smooth surface skin, leading to very low water absorption. It has high compressibility and low compression set over a wide temperature range, making it an ideal choice for gaskets and seals. It has excellent thermal insulation properties and is also a good acoustic insulation material at the temperature extremes where thermoplastic foams cannot be used. SS grades are suitable for long term continuous use from -60F (-50C) to 400F (204C) and for intermittent use from -80F (-62C) to 450F (232C).
Availability
- Special profiles can be supplied to customer drawing but for best results the design must be kept as simple as possible, particularly with softer material grades
- Standard firmness grades: soft (SS10), medium-soft (SS20), medium-firm (SS30) and firm (SS40)
- Extra firm materials with density up to 56lbs/cu.ft. (0.9g/cc)
- Extrusions are fully postcured and can be certified to selected ASTM D1056 and ASTM D6576 specifications and AMS 3195 / 3196
- Standard color is red. Grey, black, white and special color matches are also available
- Grey flame retardant grades, SS10 – SS40FR, which are UL94V-0 recognized at certain specified density and thickness ranges
- Extreme high temperature grades SS10 – SS40HT suitable for continuous use at 500F (260C) and intermittent use up to 570F (300C) available in dark grey or natural opaque colors
- White FDA 21 CFR 177-2600 grade, SS30FDA, for food contact applications
- Electrically conductive grade S-EL080
- Pressure sensitive adhesive backing can normally be applied to profile surfaces of minimum 0.188in (5mm) width:
- AA1 standard acrylic adhesive (265oF/130oC continuous, 350oF/175oC short term)
- AA2 high temperature acrylic adhesive (355oF/180oC continuous, 430oF/220oC short term)
- AS1 silicone adhesive (430oF/220oC continuous)
