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STANDARD O-RING CORD INCH 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)


(A) Buna-N (90 Durometer)
(B) Buna-N (70 Durometer)
(C) Buna-N (50 Durometer)
(D) Buna-N (40 Durometer)
(E) Buna-N (70 Durometer-White)
(F) Neoprene (70 Durometer)
(G) EPR (70 Durometer)
(H) Viton™ (75 Durometer-Black)
(I) Viton™ (75 Durometer-Brown)
(J) Viton™ (90 Durometer-Black)
(K) Silicone (70 Durometer)
(L) Gum Rubber (40 Durometer)
(M) Sponge Closed Cell
(N) Aflas® (75 Durometer)
NOMINAL
CROSS
SECTION
(INCH)
ACTUAL CROSS
SECTION (INCH)
(A)
(B)
(C)
(D)
(E)
(F)
(G)
(H)
(I)
(J)
(K)
(L)
(M)
(N)
1/16"
.063 ± .005"
 
X
                       
1/16"
.070 ± .007"
 
X
       
X
X
   
X
     
3/32"
.093 ± .007"
 
X
     
X
 
X
   
X
   
X
3/32"
.103 ± .007"
X
X
     
X
X
X
X
X
X
   
X
1/8"
.125 ± .007"
X
X
     
X
X
X
 
X
X
 
X
 
1/8"
.139 ± .007"
X
X
X
X
X
X
X
X
X
X
X
   
X
3/16"
.188 ± .007"
 
X
     
X
X
X
 
X
X
 
X
 
3/16"
.210 ± .007"
X
X
X
X
X
X
X
X
X
X
X
   
X
1/4"
.250 ± .008"
X
X
X
   
X
X
X
X
X
X
 
X
X
1/4"
.275 ± .008"
X
X
X
X
X
X
X
X
X
X
X
   
X
5/16"
.313 ± .008"
X
X
   
X
X
X
X
X
X
 
X
X
3/8"
.375 ± .010"
X
X
 
X
X
X
X
X
X
X
X
X
X
13/32"
.406 ± .010"
                   
X
     
7/16"
.437 ± .012"
X
X
X
 
X
 
X
X
 
X
X
     
15/32"
.472 ± .015"
 
X
X
       
X
 
X
       
1/2"
.500 ± .015"
X
X
X
 
X
X
X
X
X
 
X
X
X
X
9/16"
.562 ± .015"
 
X
     
X
X
X
           
5/8"
.625 ± .015"
 
X
X
   
X
X
X
   
X
X
X
 
3/4"
.750 ± .015"
 
X
     
X
X
X
   
X
X
X
 
7/8"
.875 ± .020"
 
X
                       
1"
1.000 ± .020"
 
X
         
X
     
X
X
 
1-1/16"
1.062 ± .030"
 
X
                       
1-1/8"
1.125 ± .030"
 
X
                       
1-1/4"
1.250 ± .040"
 
X
         
X
           
1-1/2"
1.500 ± .060"
 
X
                       
Match the corresponding letter above to determine the type of material.
(A) Buna-N (90 Durometer)
(B) Buna-N (70 Durometer)
(C) Buna-N (50 Durometer)
(D) Buna-N (40 Durometer)
(E) Buna-N (70 Durometer-White)
(F) Neoprene (70 Durometer)
(G) EPR (70 Durometer)
(H) Viton™ (75 Durometer-Black)
(I) Viton™ (75 Durometer-Brown)
(J) Viton™ (90 Durometer-Black)
(K) Silicone (70 Durometer)
(L) Gum Rubber (40 Durometer)
(M) Sponge Closed Cell
(N) Aflas® (75 Durometer)

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)


(A) Buna-N (70 Durometer)
(B) Buna-N (90 Durometer)
(C) Neoprene (70 Durometer)
(D) EPR (70 Durometer)
(E) Viton™ (75 Durometer - Black)
(F) Viton™ (90 Durometer)
(G) Viton™ (75 Durometer - Brown)
(H) Silicone (70 Durometer)
(I) Aflas®
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) Viton™ (75 Durometer - Black)
(F) Viton™ (90 Durometer)
(G) Viton™ (75 Durometer - Brown)
(H) Silicone (70 Durometer)
(I) Aflas®