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 M3	3.2	7	1	100	7,09 EUR
Cupal M4	4.2	8,5	1	100	13,97 EUR
Cupal M5	5.2	11,2	1	100	15,22 EUR
Cupal M5/2	5.2	11,2	2	50	15,1 EUR
Cupal M6	6.5	13,2	1	100	15,43 EUR
Cupal M6/2	6.5	13,2	2	50	22,6 EUR
Cupal M8	8.5	17,2	1	50	25,85 EUR
Cupal M8/2	8.5	17,2	2	50	57 EUR
Cupal M10	11	21,2	1	50	21,27 EUR
Cupal M10/2	11	21,2	2	50	88 EUR
Cupal M12	13	28,2	1	50	55 EUR
Cupal M12/2	13	28,2	2	50	135 EUR
Cupal M14	15	32	1	50	58 EUR
Cupal M14/2	15	32	2	50	171 EUR
Cupal M16	17	35	1	50	54 EUR
Cupal M16/2	17	35	2	50	189 EUR
Cupal M20	21	40	1	50	99 EUR
Cupal M20/2	21	40	2	50	245 EUR