Proteus Beads | McMaster-Carr

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System of Measurement

Diameter

Shape

Material

Density

Color

For Use With

Acetic Acid (White Vinegar)

Methanol (Methyl Alcohol)

Methyl Ethyl Ketone (MEK)

Mineral Oil

Phosphoric Acid

Sodium Hydroxide (Caustic Soda)

Hardness Rating

Construction

Performance

Maximum Temperature

Clarity

Application

Tolerance Rating

For Use Outdoors

Dielectric Strength

Not Rated

Impact Strength

0.9 ft·lbf/in

Tensile Strength

2,900 psi to 5,070 psi

Tensile Strength Rating

Poor

Water Absorption Rating

Good

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

DFARS Specialty Metals

RoHS

Water Absorption

22 Products

About Plastic

Compare over 25 types of plastic to find the right material for you.

Polypropylene Balls

Color: Semi-Clear White
Max. Temperature:
Solid Balls: 180° F
Hollow Balls: 220° F
Tensile Strength: 2,900-5,070 psi (Poor)
Impact Strength: 0.9 ft.-lbs./in. (Poor)
Hardness: Rockwell R99 (Hard)
For Use Outdoors: No
Specifications Met: See table

Resistant to swelling when exposed to water, these balls are often used in laboratory applications.

Hollow balls float. Use them in tanks to slow evaporation and reduce heat loss.

Solid
Dia.	Dia. Tolerance	Specifications Met	Pkg. Qty.		Pkg.
1/8"	-0.002" to 0.002"	ASTM D4101	500	000000	00000
5/32"	-0.002" to 0.002"	ASTM D4101	500	000000	00000
3/16"	-0.002" to 0.002"	ASTM D4101	500	000000	00000
7/32"	-0.002" to 0.002"	ASTM D4101	250	000000	00000
1/4"	-0.002" to 0.002"	ASTM D4101	250	0000000	00000
9/32"	-0.002" to 0.002"	ASTM D4101	100	000000	00000
5/16"	-0.002" to 0.002"	ASTM D4101	250	0000000	00000
3/8"	-0.002" to 0.002"	ASTM D4101	100	0000000	0000
0.4"	-0.002" to 0.002"	__	15	0000000	0000
1/2"	-0.002" to 0.002"	ASTM D4101	100	0000000	00000
5/8"	-0.002" to 0.002"	ASTM D4101	50	0000000	00000
3/4"	-0.002" to 0.002"	ASTM D4101	25	0000000	0000
7/8"	-0.002" to 0.002"	ASTM D4101	1	0000000	0000
1"	-0.002" to 0.002"	ASTM D4101	10	0000000	0000
1.497"	-0.002" to 0.002"	__	3	0000000	0000
Hollow
0.787"	-0.010" to 0.010"	FDA Compliant 21 CFR 177.1520	150	0000000	00000
1"	-0.015" to 0.015"	FDA Compliant 21 CFR 177.1520	25	0000000	0000
1.4"	-0.015" to 0.015"	FDA Compliant 21 CFR 177.1520	25	0000000	0000
1.496"	-0.010" to 0.010"	FDA Compliant 21 CFR 177.1520	50	0000000	00000
1.969"	-0.020" to 0.020"	FDA Compliant 21 CFR 177.1520	40	0000000	00000
3.15"	-0.030" to 0.030"	FDA Compliant 21 CFR 177.1520	10	0000000	00000
3.937"	-0.050" to 0.050"	FDA Compliant 21 CFR 177.1520	1	0000000	0000