48mm Black Spare Safety Button Lids

Packs of 48mm twist off replacement safety button glass jam jar lids, available in Retail and Wholesale packs. They are vinegar-proof, FSA approved, BPA free and suitable for home preserving or commercial use.

• These twist lids are vinegar and acidic proof making them suitable for pickling and preserves such as chutney as well as jam, marmalade and relish.

• Use with hot produce, when heat sealed the safety button is pulled down to show the seal has been made. 

• The twist closure creates a vacuum seal which is airtight and liquid tight. Preventing leaks and prolonging shelf life.

• An environmentally friendly way to reuse glass jars.

• Seals with a 1/4 of a turn.

• To find the correct lid for your jar read our handy blog article for help.

Helpful hand application tips

These lids can be applied by machine but they can also be hand applied. Please follow these care tips for successful application. For more in-depth information please read our blog post on lids.

• Take care not to over tighten, a quarter of a turn will seal the lid.

• Check the lid is not cross threaded.

• Warmed lids work best, they can be heated to a maximum of 60°C

• Apply the cap finger tight and then apply pressure for 1/4 of a turn. 

• Place the hot jam or produce in the jar, as it cools the contracting air sucks down the 'button' and provided the button stays down, you can be sure the seal is effective.

• When filling the jar leave approximately 10mm (5%) space from the rim in order to create the best vacuum and seal.

Dimensions

Size: 48mm button twist cap
Colours: Black

Materials: Metal. Manufactured by Silgan.

All of our glass product listings include details of the correct lid size for that jar.  

Please measure across the neck of your glass jar to get the correct size. If in doubt read our handy blog article for help or call us on 01477 537224 for friendly help and advice.