Mosites #1028 Closed Cell Viton® Sponge Sheeting
Mosites Rubber Company offers a soft, closed cell, Viton® Sponge product in molded sheet sizes up to 30″ by 56″ and in thicknesses of 1/8″, 1/4″, 3/8″, and 1/2″. The material has the same excellent chemical resistance as standard dense Fluoroelastomer sheet, with the advantage of providing low closing pressure, leak proof seals. The service temperature range is from -40° F to +400° F, but resistance to compression set is poor at high temperature. The molding process results in an integral single sheet of microcellular foam with a thin, slightly denser “skin” on each surface. This skin makes the sheet stronger and more resistant to tearing than it would be if it were cut or sliced from a thicker sheet of product. The drawback in this manufacturing process is that control of overall thickness is more difficult and the thickness tolerances accepted by our Quality Control Department are more generous, typically +0.050″/-0.033″.
The material has been tested by NASA at their White Sands Test Facility for flammability, and for VOC out gassing. These tests are critical for satellite and spacecraft applications and Mosites #1028 Viton® Sponge has been certified for use on the Shuttle and the Space Station. The product is compatible with Liquid Oxygen (LOX) and is an excellent thermal insulation material.
| Physical Properties of Mosites #1028 Viton® Sponge | ||||
|---|---|---|---|---|
| Sheet Thickness | 1/8″ | 1/4″ | 3/8″ | 1/2″ |
| Density (lbs per cubic foot) | 19 | 17 | 15 | 10 |
| 25% Compression Deflection (psi) Original Heat Aged 7 Days at 400°F |
6.5 9.0 |
5.5 7.5 |
4.0 6.0 |
3.5 5.0 |
| % Compression Set (22 hours at 75°F) | 27% | 13% | 14% | 17% |
| Low Temperature Brittleness (°F) | -10° | -10° | -10° | -10° |
| Hardness (Shore 00) Typical* | 48 | 45 | 44 | 40 |
| Thickness Tolerance (Production Sheets) | +0.050 -0.030 |
+0.060 -0.060 |
+0.080 -0.080 |
+0.125 -0.125 |
* Not to be used for setting Quality Control Requirements.
