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1. Excellent resistance to hydrolysis, 2. Good chemical errosion resistance, 3. Provides better acid reistance at higher temp - details see: https://www.machineto.com/ryton-needle-felt-for-industrial-filtration-equipment-10217292

PPS is limited to 190^oC. Being a more stable polymer, it provides better acid resistance, compared to aramid, at higher temperatures.

PPS is subject to oxidation at high O₂levels.

Data Sheet:

Item Name	PPS Needled Felt
Compositions	PPS fiber/ PPS scrim
Weight (g/m2)	500
Thickness (mm)	2.0
Air Permeability (L/m2·s)	150-250
Tensile Strength (N/200×50mm)	Warp: >1200 Weft:>1300
Working Temperature (oC)	Continuous:190 Instant:220
Anti-Acid & Anti-Alkali	Excellent
Anti-Abrasion	Excelletn
Oxidative Stability	Poor
Filter Velocity (m/min)	1.0-1.2
Fishing Treatment	singeing, calendering, water&oil repellent, PTFE impregnation, membrane
Remark: Lower the temperature when there is high oxyen content or moisture level.

Remarks: All data expressed as typical values. The technical data is subject to change. Please contact us directly to confirm current information.