(Full name: Pan-Pu Encapsulated Seal Ring, also known as Encapsulated O-Ring, Encapsulated Fluorine O-Ring) combines the elasticity and sealing properties of rubber with the chemical resistance of PTFE organically. It is composed of a core made of silicone rubber or fluororubber and a relatively thin outer layer of FEP or PFA. Pan-Pu seal has excellent sealing performance. Rubber O-rings are prone to wear, poor chemical resistance, and poor gas permeability. Pure PTFE O-rings have high hardness and can resist compression but have poor elasticity. The outer layer of FEP/PFA O-rings has good resistance to swelling and chemical stability (except for erosion by alkali metals, fluorine, and some halides at high temperatures), good elasticity near rubber O-rings, very low friction coefficient of FEP/PFA (only 0.1~0.2), and excellent gas impermeability. These properties make Pan-Pu seal O-rings truly applicable in harsh environments.
Product Features:
—Outstanding chemical resistance, suitable for almost all chemical media (strong oxidizing, reducing solvents).
—Excellent corrosion resistance (strong acid, alkali solvents).
—Wide temperature range -200°C~260°C
—Good compression resistance ≥30%
—Friction resistance (very low friction coefficient of only 0.1~0.2).
—Good resistance to swelling (≤0.1%).
—High pressure resistance (up to 60Mpa).
—Excellent sealing durability, increasing the service life by 500%.
Applicable Equipment
—Pumps and valves
—Reaction vessels
—Mechanical seals
—Filters
—Pressure vessels
—Heat exchangers
—Boilers
—Pipeline flanges
—Gas compressors
—Dye manufacturing
—Paint spraying
Application Industries
—Chemical processes
—Aircraft manufacturing
—Pharmaceutical industry
—Transportation of petroleum and chemicals
—Refinery
—Film industry
—Refrigeration engineering
—Food processing industry
—Paper industry
Material Introduction:
1. FEP and PFA are essentially similar in nature, but PFA has better high temperature resistance than FEP
Temperature range:
FEP shell: -60°C~205°C can be used for a short time at 260°C high temperature
PFA shell: -60°C~260°C can be used for a short time at 300°C high temperature
2. Our company specifies the standard core material of Pan-Pu seal as:
Fluororubber E-60C grade
Silicone rubber ZZR 765B grade
Solid Pan-Pu seals are widely used in static and dynamic seals. Hollow silicone rubber Pan-Pu seals generally have a larger thread diameter and are used in static seals. They have lower hardness and compression resistance than solid core Pan-Pu seals.
Hardness:
The average hardness of Pan-Pu seals of different materials is:
Solid silicone rubber: 85-90
Solid fluororubber: 90-95
Hollow silicone rubber: 75-80
Product Model:
The brand series "Pan-Pu Seal" produced by our company is divided into three series according to the structure and operating conditions of the product.
>>FEP Coating (cross-section can be O-shaped, square, polygonal design)
