PEEK pall ring

PEEK is a semicrystalline thermoplastic with excellent mechanical and chemical resistance properties that are retained to high temperatures. The processing conditions used to mold PEEK can influence the crystallinity, and hence the mechanical properties. The Young's modulus is 3.6 GPa and its tensile strength 90 to 100 MPa.[4] PEEK has a glass transition temperature of around 143 °C (289 °F) and melts around 343 °C (662 °F). Some grades have a useful operating temperature of up to 250 °C (482 °F) . The thermal conductivity increases nearly linearly versus temperature between room temperature and solidus temperature.[5] It is highly resistant to thermal degradation as well as attack by both organic and aqueous environments. It is attacked by halogens and strong Bronsted and Lewis acids as well as some halogenated compounds and aliphatic hydrocarbons at high temperatures. It dissolves completely in concentrated sulfuric acid at room temperature.

Tech Data of Plastic Pall Ring:

Specification (mm)	D×H×δ (mm)	Specific area (m2/m3)	Void volume (m3/m3)	Bulk number (n/m3)	Package density (kg/m3)	F factor (m-1)
Dg16	16×16×1	188	0.91	112000	141	275
Dg25	25×25×1.2	175	0.90	53500	82	239
Dg38	38×38×1.4	115	0.89	15800	54	220
Dg50	50×50×1.5	93	0.90	6500	56	127
Dg76	76×76×2.6	73.2	0.92	1927	58	94
Dg100	100×100×3.0	52.8	0.94	1000	50	82

*Note:The above data sub to the material PP.