Safeguard your preserves from contamination with Kilner screw top preserve jar seals. Kilner screw-top preserve jars feature two-part lids. While one section forms the seal, the other screws down, holding it firmly in place. These seals make up the former, and feature a tight rubber seal. Keeping your jars airtight ensures that your preserves are always kept fresh, which extends its lifespan and reduces food waste. These seals are an essential part of your home-preserving equipment, from iconic and trusted brand Kilner. Dimensions 25(H) x 70()mm Material Rubber Weight 80g Spare seal goes under the outer lid Rubber lining forms an airtight seal Can be reused up to 10 times Easy to clean Genuine Kilner product - fits perfectly