Plastics

Nylon-zytel 101  •  Acetal (Delrin & Celcon)  •  Teflon  •  Polypropylene  •  Polystyrene    

General Information
Plastic balls have numerous applications ranging from low load applications, flow control, colored products for identification purposes, and many medical applications.  Plastic offers excellent fatigue and corrosion resistance, impact strength and in many cases natural lubricity.  Hartford Technologies offers a complete line of FDA approved plastic products for your application in materials including Nylon, Delrin and other Engineered Plastics, all readily available in inch and metric sizes.

Grades
Plastic balls have their own grade selection chart that differs from steel.  Below is the Grade Chart for plastic balls in both inches and metric sizes.

Finishes
Available in matte, rough and polished surfaces.

Nylon-zytel 101

Material Characteristics
Corrosion-resistant Nylon is insoluble in common solvents, alkalies, diluted mineral acids and most organic acids.  Nylon is particularly outstanding in resistance to alkalies, petroleum oil and greases at temperatures up to 300 degrees F.  Acids such as lactic acids in milk, photographic solutions, etc., have little or no effect.  Nylon balls are an excellent choice for applications that require a lightweight, resiliant and abrasion resistant material.  Used without lubrication, Nylon offers excellent toughness and ductility compared to most plastics.

Specific Gravity
1.12 -1.14

Hardness
R119

Acetal (Delrin & Celcon)

Material Characteristics
Acetals are polymers that offer predictable mechanical, chemical and electrical properties over a broad temperature range for extended periods of time.  They exhibit good fatigue resistance, impact resistance, tensile and shear strength.  Delrin maintains a natural lubricity giving it a low coefficient of friction against metals.  Because of this, acetals are used in pump, valve, slide and rolling applications.  Most acetal resins meet FDA, USDA and UL requirements.  Delrin is a Dupont product and Celcon is a Hoescht Celanese product.

Specific Gravity
1.41-1.42 gm/cc

Hardness
R119-122

Teflon

Material Characteristics
There are no known industrial acids or caustics that will attack Teflon, and there is no known solvent for it.  Recommended for applications where lightweight, non-metallic, and erosion-resistant properties are required.

Polypropylene

Material Characteristics
Polypropylene has excellent chemical resistance and low density as well as the highest melting point of the volume thermoplastics.  It also has high tensile strength.  It is an excellent electrical insulator having low dielectric constant and loss factors.  It is highly resistant to chemicals such as acids, alkalies, alcohols and many inorganic chemicals.

Specific Gravity
.90

Rockwell Hardness
R80-102

Polystyrene

Material Characteristics
Polystyrene is a low-cost thermoplastic with excellent abrasion resistance and high impact characteristics.  It is used in various pharmaceutical, medical and electronic applications.

Colored Balls

All Hartford Plastic Balls are manufactured in natural color plastic as standard.  For applications specifying color we can duplicate any color on special order.

Engineered Plastics such as Aurum, PEEK and Torlon also offered for high load high heat applications.
 
Polyethylene, Polyurethane, Polycarbonate and are also available to satisfy other plastic ball requirements.