Impact strength not high except with cord, fabric, glass and butadiene filled grades. Hence high breakage rates during transportation have been reported. Good dimensional stability over wide temperature range. Self extinguishing grades available. This can be extended depending upon fillers used.
Limitation is the tendency to form tracking paths at high voltages.
Electrical properties adversely affected by hot, wet conditions, especially wood-filled grades. Very low water absorption. Limitation is that it is not stable in presence of alkalis or strong oxidising acids. Surface finish adversely affected by hot, wet conditions, especially wood-filled grades. Special fillers incorporated to produce magnetic compounds, provision of X-ray shielding, or for microwave absorption, or for low friction applications.