POLYPROPYLENE (PP)
Excellent chemical resistance, low specific weight (less than water) and the highest melting point of thermoplastics. it is an excellent electrical insulator and a low dielectric constant coefficient. it is often used where the capacity to float on fluids in general is required. it is ideal for equipment used for blood transfusions, level indiacators and deodorant roll-on sticks. it is highly resistant to chemical substances, such as acids, alcalis, alcohols and many inorganic substances, saline solutions, solvents, alcohols, gasoline (petrol), water, oils, greases, detergent, fruit juices and milk. it is not resistant to aromatic hydrocarbins and chlorates. it is perfect for all medical and pharmaceutical applications.
POLYETHYLENE (PE)
This material has a low density compared with other types of plastics and it is suitble for applications where the capacity to float is required. it is very strong and resistant to elongation. it also has excellent electrical and dielectric properties. it's absorbing very little water, has high chemical resistance, and it's resistant to diluted acids, alcalis, solvents, alcohols, gasoline(petrols), water, grase and oils. it is not resistant to oxidising acids, ketones, aromatic or chlorinated hydrocarbons and detergents. it is odourless, and there are no counter-indications for the use of this material with food.
DELRIN BALL (ACETAL RESIN-POM)
Polymer resin with excellent mechanical and chemical resistance and good electrical properties. Resistant to inorganic saline solutions, aliphatic, aromatic and chlorinated hydrocarbons, low strength alcohols, ether, combustible mixtures, mineral oils and greases. Balls made of these materials are often used for sliding fittings of tables and drawers, furniture bearings, rollers, valves and electronic components, sailing boat fittings.
NYLON (PA)
Insoluble in common solvents, alcalis, diluted mineral acids and organic acid substances. it is, above all, resistant to alcalis, oils and petroleum greases at temperatures up to 150°c, inorganic saline solutions, aromatic hydrocarbons, low strength alcohols, gasoline. it has high strength, rigidity and hardness characteristics.
POLYSTIRENE (PS)
A low cost thermoplastic with excellent resistance to abrasion and strong impacts. it is commonly used for various medical, pharmaceutical and electronic applications.
TEFLON (PTFE)
It is exceptionally resistant to most industrial acids, inorganic saline solutions, caustic substances, cryogenic liquids and hydrocarbons. it cannot be damaged by any kind of solvent. it is self-lubricating and recommended for all uses that require strong chemical resistance.
VULKOLLAN (PUR)
A polyurethane with excellent resistance to abrasion and with the advantage that it can adapt itself to any imperfections in the ball housing. it is resistant to combustible mixtures, greases, oils, alcohols, gasoline(petrol), ozone, oxygen, weak acids and alcalis. it is not resistant to strong acids and alcalis, aromatic alhols, hot water, hot air, saturated steam and some gasoline (petrol) additives.
