— Your Single Source For Plastic Balls —

Delrin (Polyoxy-Methylene) Plastic Balls

Delrin (Polyoxy-Methylene) Plastic Balls

Delrin (Polyoxy-Methylene), also known as Acetal, Polyacetal, and POM, is an engineering thermoplastic commonly used for precision parts that require high strength, hardness and rigidity. It is a tough material with a low coefficient of friction and high abrasion resistance. It has good electrical and dielectric properties, low water absorption and is FDA approved. Naturally white in color it does accept opaque colors well and can be polished to a shine. Delrin is typically difficult to bond but can be bonded with epoxies, polyurethanes and cyanoacrylates (superglue). It has good chemical resistance but is sensitive to mineral acids, chlorine, and alkaline degradation. Common uses include; pump parts, valve bodies, and bearings.

Standard Sizes:

3/32"
1/8"
5/32"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
3/4"
7/8"
1"
1-1/8"
1-1/4"
1-3/8"
1-1/2"
1-3/4"
2"
Specific Gravity
1.42 g/cc
Melting Point
352 F / 178 C
Hardness, Rockwell
120
Heat Deflection Temperature
250 F / 121 C
Tensile Strength
11,000 psi
Water Absorption
24 hr .2%
Compressive Strength
16,000 psi
Flammability
UL94 HB
Flexural Strength
12,000 psi
^