| Typical Ball Tolerances Available: | ||||
Grade 0 |
+/-.0005 | Roundness | .00025 TIR | |
Grade 1 |
+/- .001 | Roundness | .0005 TIR | |
Grade 2 |
+/- .002 | Roundness | .001 TIR | |
Grade 3 |
+/- .005 | Roundness | .005 TIR | |
Teflon® PTFE Balls available from Applied Plastics Technology, Inc. are typically Grade 2, Matte finish. Balls are solid, compression molded PTFE. Special requests for sizes, tolerances and/or roundness not specified in this table may also be available. Please email or call us. |
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Standard Surface
Finishes: |
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Avg. Roughness, Ra, µin |
 Blue PTFE Balls Solid, Grade 2, Matte Finish |
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Tumbled |
50 to 60 | |||
Matte |
40 to 50 | |||
Polished |
25 to 35 | |||
High Polished |
10 to 20 | |||
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Colors: |
Custom colors are available. Virgin PTFE material is generally white, but color can be custom blended (prior to molding) to aid in part identication, or for other ornamental purposes. Colors often reflect the type of filler present, if used, such as glass, moly, stainless steel, etc.. |
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 |
 Stainless Steel Filled PTFE, Solid Balls |
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