Graphite

PTFE

Rubber

Inch

Metric

Durometer 70A

Durometer 75A

Durometer 60D

Durometer 65D

Durometer 66D

Rockwell R60

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

1,000° F or greater

Medium

Extra Hard

1

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to 0° F

Greater than 0° F

ASTM Standard

NFPA (National Fluid Power Association) Standard

SAE Standard

Compliant

Not Compliant

Compliant

Not Compliant

Exempt

EAR99

FDA Compliant 21 CFR 177.1550

FDA Compliant 21 CFR 177.2600

Food and Beverage

0.500"

0.750"

0.837"

0.875"

0.915"

1.000"

1.180"

1.207"

1.250"

1.302"

1.422"

1.500"

1.552"

1.577"

1.750"

1.753"

1.878"

1.952"

2.000"

2.001"

2.124"

2.125"

2.202"

2.250"

2.375"

2.446"

2.452"

2.500"

2.519"

2.702"

2.724"

2.750"

3.000"

3.250"

3.500"

4.000"

23.500 mm

27.000 mm

39.200 mm

1"

1 1/4"

1 1/2"

1 3/4"

2"

2 1/8"

2 1/4"

2 3/8"

2 1/2"

2 3/4"

3"

3 1/4"

3 1/2"

4"