Resin balls 10 materials (Sφ1.2mm to Sφ2in)

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PP / POM / PA66 / PA6 / PMMA / PE / PC / PTFE (Teflon) / PEEK / PI (Bespel)

last updated：Oct 21, 2026

Kiriuri KIRIURI.COM

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Plastic balls available in 10 materials. Size 125 in inches and millimeters.

These are resin balls (plastic balls). The specific gravity, chemical resistance, heat resistance, and transparency vary by material, allowing you to choose according to the usage environment. KIRIURI.COM offers 10 materials, including PP, POM, PA66 (66 nylon), PA6 (6 nylon), PMMA (acrylic), PE (polyethylene), PC (polycarbonate), PTFE (Teflon), PEEK, and PI (Vespel), with a total of 125 sizes (Sφ1.2mm to Sφ2in). There are inch sizes (Sφ1/16in to Sφ2in) and metric sizes (Sφ1.2mm/1.5mm/2.0mm). You can order the required quantity for each size. Property data PDFs for 66 nylon, 6 nylon, acrylic, and polycarbonate balls are also available for download. *Teflon is a trademark of DuPont (now Chemours), and Vespel is a trademark of DuPont.

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basic information

【Material】PP/POM/PA66/PA6/PMMA/PE/PC/PTFE/PEEK/PI (Vespel) 【Shape】Sphere (Sφ = diameter of the sphere) 【Size】Sφ1.2mm to Sφ2in (varies by material) 【Color】Natural (PMMA and PC are transparent, Vespel is brown) 【Reference Physical Properties】 PP: Specific gravity 0.91 / Continuous use temperature 100℃ POM: Specific gravity 1.41 / Continuous use temperature approximately 140℃ PA66: Specific gravity 1.14 / Continuous use temperature 80-150℃ PA6: Specific gravity 1.14 / Continuous use temperature 65-120℃ PMMA: Specific gravity 1.19 / Visible light transmittance over 90% PE: Specific gravity 0.97 / Continuous use temperature 80℃ PC: Specific gravity 1.2 / Continuous use temperature 120℃ PTFE: Specific gravity 2.10-2.30 / Continuous use temperature approximately 260℃ PEEK: Density 1.31g/cm³ / Continuous use temperature 260℃ PI: Continuous use temperature 300℃ *The values are for reference only. Please check the physical property table PDF and the manufacturer's latest data sheet for accurate values.

Price information

Prices by size are published on KIRIURI.COM (stock confirmation and orders are for corporate members who have registered for deferred payment). Free shipping for orders over 50,000 yen (excluding tax).

Delivery Time

※In-stock items will be shipped within 4 business days after the order is confirmed.

Applications/Examples of results

- Areas in contact with chemical solutions: PP, PE, PTFE (materials resistant to acids and alkalis) - Non-lubricated sliding parts: POM (self-lubricating) - High-temperature environments: PEEK (continuous 260°C), PI Bespel (continuous 300°C) - Areas requiring transparency: PMMA (acrylic), PC - Areas subjected to impact: PC - Weight reduction: PP (specific gravity 0.91), PE (specific gravity 0.97) - Electrical insulation: PTFE, PEEK 【Selection Criteria】Transparency and weather resistance are provided by acrylic, impact resistance by PC. Heat resistance and rigidity are offered by PA66, while toughness is provided by PA6. 【Caution】PA6 and PA66 will change dimensions due to moisture absorption. PP becomes brittle at low temperatures, and PC may develop solvent cracks when exposed to alcohol, acetone, etc., while in a state of residual stress.

Detailed information

PP Ball (Natural) Lightweight and Chemical Resistant With a specific gravity of 0.91, it is among the lightest practical resins, extremely resistant to acids and alkalis, and absorbs almost no water. Continuous use temperature is 100°C. Available in sizes from Sφ3/32in to Sφ2in (16 sizes).
POM balls (natural) with sliding and dimensional stability. They have self-lubricating properties, providing good sliding even without lubrication, and maintain dimensional stability with a water absorption rate of 0.20%. Continuous use temperature is approximately 140°C. Not suitable for strong acid environments. Available sizes from Sφ1.2mm to Sφ2in (20 sizes).
66 Nylon balls / 6 Nylon balls (Natural) 66 Nylon is harder and has higher heat resistance than 6 Nylon, while 6 Nylon excels in toughness. Both types will change dimensions due to moisture absorption. 66 Nylon balls are available in sizes Sφ1/16in to Sφ2in (17 sizes), and 6 Nylon balls are available in sizes Sφ5/8in and Sφ1in (2 sizes).
Acrylic sphere (PMMA, transparent) transparent and weather-resistant. It is a transparent sphere with a visible light transmittance of over 90% and excellent weather resistance. Specific gravity 1.19. Available sizes from Sφ2.0mm to Sφ1in (14 sizes).
Polyethylene balls (PE, natural) lightweight and water-resistant With a specific gravity of 0.97, they are light enough to float on water, absorb very little moisture, and are resistant to acids and alkalis. The continuous use temperature is around 80°C. Available in sizes Sφ1/8in to Sφ1in (12 sizes).
Polycarbonate ball (PC, transparent) impact-resistant This is a transparent material with top-class impact resistance made from thermoplastic resin. Continuous use temperature is 120°C. Please be cautious of solvent cracking due to organic solvents. Available in sizes Sφ2.0mm to Sφ9/32in (5 sizes).
Teflon ball (PTFE, natural) chemical resistance and low friction. It is not affected by almost all chemicals, and its friction coefficient is among the lowest in resins. Continuous use temperature is approximately 260°C, with a water absorption rate of 0.01%. Available sizes from Sφ2.0mm to Sφ2in (17 sizes).
PEEK Ball (Natural) Heat Resistant and High Strength This super engineering plastic can withstand continuous use temperatures of 260°C and is also excellent in chemical resistance and hydrolysis resistance. Density 1.31g/cm³. Available sizes from Sφ2.0mm to Sφ1in (14 sizes).
Bespel ball (PI・brown) super heat-resistant Bespel is a polyimide (PI) resin from DuPont, with a continuous use temperature of 300°C, making it one of the highest classes of heat resistance among resins. Available in sizes Sφ3/16in to Sφ1in (8 sizes).

Line up（10）

Model number	overview
PP ball	Sφ3/32in・Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ9/32in・Sφ5/16in・Sφ3/8in・Sφ7/16in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ7/8in・Sφ1in・Sφ2in (a total of 16 sizes). You can order the required quantity for each size.
POM ball	Sφ1.2mm・Sφ1.5mm・Sφ1/16in・Sφ2.0mm・Sφ3/32in・Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ9/32in・Sφ5/16in・Sφ3/8in・Sφ7/16in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ7/8in・Sφ1in・Sφ2in (a total of 20 sizes). You can order the required quantity for each size.
PA66 ball	Sφ1/16in・Sφ3/32in・Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ9/32in・Sφ5/16in・Sφ3/8in・Sφ7/16in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ7/8in・Sφ1in・Sφ2in (a total of 17 sizes). You can order the required quantity for each size.
PA6 ball	Sφ5/8in and Sφ1in (a total of 2 sizes). You can order the required quantity for each size.
PMMA ball	Sφ2.0mm・Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ9/32in・Sφ5/16in・Sφ3/8in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ7/8in・Sφ1in (a total of 14 sizes). You can order the required quantity for each size.
PE ball	Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ5/16in・Sφ3/8in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ7/8in・Sφ1in (a total of 12 sizes). You can order the required quantity for each size.
PC ball	Sφ2.0mm・Sφ3/32in・Sφ5/32in・Sφ3/16in・Sφ9/32in (a total of 5 sizes). You can order the required quantity for each size.
PTFE ball	Sφ2.0mm・Sφ3/32in・Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ9/32in・Sφ5/16in・Sφ3/8in・Sφ7/16in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ7/8in・Sφ1in・Sφ2in (a total of 17 sizes). You can order the required quantity for each size.
PEEK ball	Sφ2.0mm・Sφ3/32in・Sφ1/8in・Sφ5/32in・Sφ3/16in・Sφ7/32in・Sφ1/4in・Sφ9/32in・Sφ5/16in・Sφ3/8in・Sφ1/2in・Sφ5/8in・Sφ3/4in・Sφ1in (a total of 14 sizes). You can order the required quantity for each size.
PI ball	Sφ3/16in, Sφ7/32in, Sφ3/8in, Sφ7/16in, Sφ1/2in, Sφ5/8in, Sφ3/4in, Sφ1in (a total of 8 sizes). You can order the required quantity for each size.