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Plastic Balls

Plastic Balls

We manufacture five main types of Plastic Balls, using standard and speciality polymer resins.

Acetal Resin balls

Acetal Resin balls are characterised by excellent tensile strength, stiffness and resistance to 'creep' (where an item becomes deformed under mechanical stress).

Polyamide Nylon

Polyamide Nylon 6/6 Balls which offer a good balance between strength, heat resistance and ductility (so they deform under tensile stress rather than breaking)

Low Density Polythene Balls

Low Density Polythene Balls offer superb flexibility and are virtually unbreakable.

High Density Polythene Balls

High Density Polythene Balls are harder still, have a higher density and can withstand temperatures up to 110c.

PTFE Balls

PTFE Balls which are made from Polytetrafluoroethylene, can operate in temperatures from -240 to +260C, are highly resistant to corrosion and have a very low coefficient of friction.


Plastic balls are a very cost effective alternative to metal balls, especially in low load bearing applications and can carry many different surfaces finishes - from rough to highly polished. They're self lubricating, quiet and highly resistant to corrosion; they also offer exceptional performance for very little weight.

Use Cases

You'll find our plastic balls in aerosol spray cans, lightweight check valves (used in home heating systems, for example) medical diagnostic tools (for example in MRI units because they don't impact on magnetic imaging) pool cleaners (they don't rust) and in the semi-conductor industry.

Acetal (Delrin)Polyamide (Nylon 66)Polyethylene Low DensityPolyethylene High DensityPTFE
Physical Properties
Specific Gravity1.421.13-1.150.910-0.9250.941-0.9652.14-2.20
Water absorption, 1/8" thick specimen, 24h saturation (%)0.25-0.401.0-1.3<0.01<0.01<0.01
Dielectric strength, 1/8" thick specimen, short time (V/mil)500 (90ml)600b450-1000450-500480
Mechanical Properties
Tensile strength at break (psi)-12.000b 11.000c600-23003100-55002000-5000
Elongation at break (%)25-7560b 300c90-80020-130200-400
Tensile yield strength (psi)95000-12.0008000b 6500c800-12003000-4000-
Compressive strength (rupture or yield) (psi)18.000@10%15.000b(yld.)-2700-36001700
Flexural strength (rupture or yield) (psi)1417.000b 6100c---
Tensile modulus (103 psi)520-14-3860-18058-80
Compressive modulus (103 psi)670---60
Flexural modulus(103 psi)380-430420b 185cAug-60100-26080
lzod impact. Ft-lb/.in.of notch (1/8" thick specimen)1.3-2.30.8-1.0b 2.1cNo break0.5-203
Hardness Rockwell/ShoreM94R120b M83bD40-51D60-70D50-55
Thermal properties
Coef. of linear thermal expansion (106in./in/oC)10080100-2220110-130-
Deflection temperature Flexural load of @264psi255167b90-105110-130-
Thermal conductivity 10-cal.-cm/sec-cm2-oC5.55.8811-Dec6
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Our Quality Guarantee

Accuracy is our trademark at TN UK. We pride ourselves on our ability to measure and calibrate the products we manufacture. Housing some of the most sophisticated equipment in the world, our annually assessed UKAS lab means we guarantee the precision of the products we supply.

On top of that, we maintain regular and open communication directly with you and any relevant departments to ensure that you get exactly what you need when you need it.

We also offer a recalibrate service for your existing gauges, CMM Reference balls and Master Ball Sets. So you can rest assured that, whether we are supplying a new product or recalibrating an existing one, by meeting our strict standards, your company meets its strict standards (particularly important for other calibration assessed companies).



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