Preserve sealing and labelling set for Jams Chutneys Marmalade and Preserves For 1lb pots. 10 red and 10 blue patterned covers and labels 20 transparent covers 20 waxed circles and 20 rubber bands. This fresh decorative set gives your home made triumphs a lovely finishing touch. Pot the jam / preserve and cover with waxed disc while the preserve is still piping hot. When jam is fairly cold this should be topped with damped cellophane disc and secured with elastic band. The cellophane shrinks when dry to create a tight seal over the jar.