World Wide Metric, Inc.
37 Readington Road
Branchburg, New Jersey 08876
Phone: 732-247-2300 • Fax: 732-247-7258
E-Mail: sales@worldwidemetric.com • Web site: www.worldwidemetric.com
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Other wall thicknesses are available from stock.
Concentric reducers with a permeability πr <1.08 are available on request.
a2319-500
Unit of Measure
1 2 3 4 5 

Item #

RA 1 - Nominal Size

RA 2 - Nominal Size

RA 1 - OD

RA 2 - OD

S1

S2

YCN-RED-108x5.0X044x2.5 N/A 4 in N/A 1 1/2 in N/A 108 mm N/A 44.5 mm N/A 5.0 mm N/A 2.5 mm
YCN-RED-108x2.5X057x1.5 N/A 4 in N/A 2 in N/A 108 mm N/A 57 mm N/A 2.5 mm N/A 1.5 mm
YCN-RED-108x5.0X057x3.0 N/A 4 in N/A 2 in N/A 108 mm N/A 57 mm N/A 5.0 mm N/A 3.0 mm
YCN-RED-108x2.5X076x2.0 N/A 4 in N/A 2 1/2 in N/A 108 mm N/A 76 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-108x5.0X076x3.5 N/A 4 in N/A 2 1/2 in N/A 108 mm N/A 76 mm N/A 5.0 mm N/A 3.5 mm
YCN-RED-108x2.5X089x2.0 N/A 4 in N/A 3 in N/A 108 mm N/A 89 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-108x5.0X089x4.0 N/A 4 in N/A 3 in N/A 108 mm N/A 89 mm N/A 5.0 mm N/A 4.0 mm
YCN-RED-133x2.5X057x1.5 N/A 5 in N/A 2 in N/A 133 mm N/A 57 mm N/A 2.5 mm N/A 1.5 mm
YCN-RED-133x2.5X076x2.0 N/A 5 in N/A 2 in N/A 133 mm N/A 76 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-133x6.0X057x3.0 N/A 5 in N/A 2 in N/A 133 mm N/A 57 mm N/A 6.0 mm N/A 3.0 mm
YCN-RED-133x6.0X076x3.5 N/A 5 in N/A 2 in N/A 133 mm N/A 76 mm N/A 6.0 mm N/A 3.5 mm
YCN-RED-133x2.5X089x2.0 N/A 5 in N/A 3 in N/A 133 mm N/A 89 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-133x6.0X089x4.0 N/A 5 in N/A 3 in N/A 133 mm N/A 89 mm N/A 6.0 mm N/A 4.0 mm
YCN-RED-133x2.5X108x2.5 N/A 5 in N/A 4 in N/A 133 mm N/A 108 mm N/A 2.5 mm N/A 2.5 mm
YCN-RED-133x6.0X108x5.0 N/A 5 in N/A 4 in N/A 133 mm N/A 108 mm N/A 6.0 mm N/A 5.0 mm
YCN-RED-159x2.5X076x2.0 N/A 6 in N/A 2 1/2 in N/A 159 mm N/A 76 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-159x8.0X076x3.5 N/A 6 in N/A 2 1/2 in N/A 159 mm N/A 76 mm N/A 8.0 mm N/A 3.5 mm
YCN-RED-159x2.5X089x2.0 N/A 6 in N/A 3 in N/A 159 mm N/A 89 mm N/A 2.5 mm N/A 2.0 mm
YCN-RED-159x8.0X089x4.0 N/A 6 in N/A 3 in N/A 159 mm N/A 89 mm N/A 8.0 mm N/A 4.0 mm
YCN-RED-159x2.5X108x2.5 N/A 6 in N/A 4 in N/A 159 mm N/A 108 mm N/A 2.5 mm N/A 2.5 mm
YCN-RED-159x8.0X108x5.0 N/A 6 in N/A 4 in N/A 159 mm N/A 108 mm N/A 8.0 mm N/A 5.0 mm
YCN-RED-159x2.5X133x2.5 N/A 6 in N/A 5 in N/A 159 mm N/A 133 mm N/A 2.5 mm N/A 2.5 mm
YCN-RED-159x8.0X133x6.0 N/A 6 in N/A 5 in N/A 159 mm N/A 133 mm N/A 8.0 mm N/A 6.0 mm
YCN-RED-194x3.0X089x2.0 N/A 7 in N/A 3 in N/A 194 mm N/A 89 mm N/A 3.0 mm N/A 2.0 mm
YCN-RED-194x3.0X108x2.5 N/A 7 in N/A 4 in N/A 194 mm N/A 108 mm N/A 3.0 mm N/A 2.5 mm
Unit of Measure
1 2 3 4 5