Contact Us

EPM, Inc.
112 W Burke St.
Stockbridge, GA 30281
800-659-5050
sales@epm.com

Phones and Fax Numbers

Call Free in the US: 800.659.5050
Local & International: 770.389.0501
Fax U.S: 888.353.7325
Fax Local & International: 770.389.0652
//Metric Sizes
Metric Sizes 2016-12-29T09:16:42+00:00

Metric Sizes & Material

Below is a list of o-ring cord sizes and available materials. A legend is provided at the bottom of this chart.
(“X” indicates material availability)

o_dia


CROSS SECTION
(METRIC)

CROSS SECTION
(INCH)

(A)

(B)

(C)

(D)

(E)

(F)

(G)

(H)

(I)

2.0mm ± .10mm

.079″

X

X

X

X

3.0mm ± .12mm

.118″

X

X

X

X

3.5mm ± .15mm

.139″

X

X

X

X

X

X

X

X

X

4.0mm ± .15mm

.158″

X

X

X

X

X

4.5mm ± .15mm

.177″

X

X

5.0mm ± .20mm

.197″

X

X

X

X

X

5.7mm ± .25mm

.224″

X

X

X

X

X

X

6.0mm ± .25mm

.236″

X

X

X

X

X

7.0mm ± .25mm

.275″

X

X

X

X

X

X

X

X

X

7.5mm ± .25mm

.295″

X

X

8.5mm ± .25mm

.335″

X

X

X

X

9.0mm ± .25mm

.354″

X

X

10.0mm ± .25mm

.393″

X

X

X

X

12.0mm ± .45mm

.472″

X

X

X

14.0mm ± .50mm

.550″

X

X

Match the corresponding letter above to determine the type of material.
(A) Buna-N (70 Durometer)
(B) Buna-N (90 Durometer)
(C) Neoprene (70 Durometer)
(D) EPR (70 Durometer)
(E) Fluoroelastomer (FPM) (75 Durometer – Black)
(F) Fluoroelastomer (FPM) (90 Durometer)
(G) Fluoroelastomer (FPM) (75 Durometer – Brown)
(H) Silicone (70 Durometer)
(I) Aflas®