Abstract: An electric cable joint is enclosed within a heat shrinkable sleeve. The joint region is sealed against the ingress of moisture by a material made of a non-crystalline polymer whose glass transition temperature is less than -40.degree. C. Further, the material has a viscosity at 35.degree. C. of less than 10.sup.6 Pa-sec and a viscosity at 95.degree. C. of greater than 10.sup.3 Pa-sec (both viscosities measured at a shear rate of 0.02 sec.sup.-1) and a minimum tack value of about 140 gm/cm.sup.2.

Abstract: A marker assembly 1 comprises a support layer 2 that has a surface which is provided with a porous coating 3 of a curable material, e.g. a particulate epoxy coating. The coating may be printed on using for example an ink jet printer to form indicia 6, and may be cured after the indicia have been formed in order to render them substantially indelible. The opposite side of the support layer 2 may be provided with suitable means for supporting the maker on a surface, e.g. a layer 4 of adhesive. The marker may be formed from a dimensionally stable or dimensionally heat-recoverable material.