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Commercial Tolerances

Sheet Rubber & Diaphragm Sheet

as published in Rubber Manufacturers Association, Sheet Rubber Handbook, dated 1980

 Thickness Tolerances*
Nominal Thickness Tolerances
(Plus or Minus)
Inches Millimeters Inches Millimeters
Fractions Decimals      
Under 1/32

1/32 to but not including 1/16

1/16 to but not including 1/8

1/8 to but not including 3/16

3/16 to but not including 3/8

3/8 to but not including 9/16

9/16 to but not including 3/4

3/4 to but not including 1

1 and over		 Under 0.031

0.031 to 0.062


0.062 to 0.125


0.125 to 0.187


0.187 to 0.375


0.375 to 0.562


0.562 to 0.750


0.750 to 1.000


1.000 and over		 Under 0.79

0.79 to 1.59


1.59 to 3.18


3.18 to 4.8


4.8 to 9.5


9.5 to 14.3


14.3 to 19.2


19.2 to 25.4


25.4		 0.010

0.012


0.016


0.020


0.031


0.047


0.062


0.094


10%		 0.25

0.30


0.40


0.51


0.79


1.19


1.59


2.38


10%

  • Note - Material made by the coating process is subject to considerably more restrictive tolerances:
    under 0.031" (0.79 mm), ± 0.003" (± 0.08 mm); 0.031" (0.79 mm) and over, ± 10%

 

 Thickness Tolerances*
 Nominal Thickness  Tolerances
(Plus or Minus)
 Inches  Millimeters  Inches  Millimeters
 36 and over  915 and over  1  25.4

 

It is recommended that the minimum length of a piece included in a roll be 10 feet or 3 meters. Rolls may be supplied in more than one piece. Slabs are usually supplied in one piece.

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