Product for business; Material: PTFE; Specific Gravity: 2.1; Strength: 2.5 g/de; Stretch: 30 %; Melting Point (Disassembly Point): 327 °C; Heat Resistant (Normal Temperature): 250 °C; Acid Resistant: ◎; Alkaline Resistance: ◎; Weather Resistant: ◎; Uses: Filter, heat-resistant seal material; Size: 900 mm x 1000. x 4