Dunham Rubber & Belting Corporation
Dunham Rubber & Belting Corporation
682 Commerce Parkway West Drive, Greenwood, IN 46143
Toll Free: 800.876.5340
Tel: 317.888.3002
Fax: 317.888.2335
Email: mail@dunhamrubber.com
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In reducing cam and groove couplings, the coupler is the first size in the part number (i.e., a 4030-DA-AL is a 4" coupler to a 3" adapter).

Couplers are supplied standard with a Buna-N gasket, other gasket types are available.
Dixon Reducing coupler x adapter AL
Unit of Measure
1 2 3 

Item #

Size

Material

3025-DA-SS N/A 3 x 2-1/2 in N/A 316 Stainless Steel
3040-DA-BR N/A 3 x 4 in N/A Brass
3040-DA-AL N/A 3 x 4 in N/A Aluminum
3040-DA-SS N/A 3 x 4 in N/A 316 Stainless Steel
3060-DA-AL N/A 3 x 6 in N/A Aluminum
3060-DA-SS N/A 3 x 6 in N/A 316 Stainless Steel
4020-DA-SS N/A 4 x 2 in N/A 316 Stainless Steel
4020-DA-AL N/A 4 x 2 in N/A Aluminum
4025-DA-SS N/A 4 x 2-1/2 in N/A 316 Stainless Steel
4025-DA-AL N/A 4 x 2-1/2 in N/A Aluminum
4030-DA-MI N/A 4 x 3 in N/A Iron
4030-DA-AL N/A 4 x 3 in N/A Aluminum
4030-DA-SS N/A 4 x 3 in N/A 316 Stainless Steel
4030-DA-BR N/A 4 x 3 in N/A Brass
4050-DA-AL N/A 4 x 5 in N/A Aluminum
4060-DA-SS N/A 4 x 6 in N/A 316 Stainless Steel
4060-DA-AL N/A 4 x 6 in N/A Aluminum
5030-DA-SS N/A 5 x 3 in N/A 316 Stainless Steel
5030-DA-AL N/A 5 x 3 in N/A Aluminum
5040-DA-SS N/A 5 x 4 in N/A 316 Stainless Steel
5040-DA-AL N/A 5 x 4 in N/A Aluminum
5060-DA-SS N/A 5 x 6 in N/A 316 Stainless Steel
5060-DA-AL N/A 5 x 6 in N/A Aluminum
6030-DA-AL N/A 6 x 3 in N/A Aluminum
6030-DA-SS N/A 6 x 3 in N/A 316 Stainless Steel
Unit of Measure
1 2 3