4 together with the bent yoke 8 and the pole piece 10 can be sealed such as for example by a foil 15 at the end face of the relay a metal cap 16 which serves for flux guidance in a known manner is then placed over the entire relay the metal cap may be filled with a sealing compound in order to hermetically seal the contact chamber therein a further embodiment for guiding and retaining the contact mounts in place is shown in fig5 and 6 a longitudinal cross section through the coil spool 1 is shown in fig5 in such a manner that the contact carriers 23 and 24 can be seen from the side in an uncut view a partial view of the contact carrier 24 at the end face of the relay is shown in fig6 the contact carriers together with guide ribs 23a and 23b and 24a and 24b are held in guide grooves 1a and 1b of the coil spool 1 as in the preceding embodiment the preceding embodiment is modified in fig5 and 6 by the presence of two ribbed projections 23e and 23f carried on the contact 23 and the presence of ribbed projections 24e and 24f carried on the contact mount 24 the projections are on the surfaces of both sides of the respective mounts 23 and 24 the fixing planes 23g and 24g of these ribbed projections are disposed on the same level as the contact surface 23i and 24i for the yoke 8 and the pole piece 10 the ribbed projections 23e 23f.