Cupal washers

Cupal washers (70% Al + 30% Cu). When metals with different electrical potential come into contact, tension and corrosion occur. Cupal Blech und Cupalscheiben sind benutzt in Energetik zur Beseitigung der galvanischen Zellen zwischen Materialen Aluminium und Kupfer.

Cupal washers
code screw	inner diameter [mm]	outer diameter [mm]	tloušťka [mm]	packaging [pcs]	price/packaging without VAT
Cupal M3B	3.5	8	1	100	15,45 EUR
Cupal M4	4.2	8,5	1	100	15,23 EUR
Cupal M5/2	5.2	11,2	2	50	16,45 EUR
Cupal M6/2	6.5	13,2	2	50	24,64 EUR
Cupal M8/2	8.5	17,2	2	50	62 EUR
Cupal M10/2	11	21,2	2	50	96 EUR
Cupal M12/2	13	28,2	2	50	147 EUR
Cupal M14	15	32	1	50	63 EUR
Cupal M14/2	15	32	2	50	187 EUR
Cupal M16	17	35	1	50	59 EUR
Cupal M16/2	17	35	2	50	206 EUR
Cupal M20/2	21	40	2	50	414 EUR