KNOW YOUR JARS 



AND HOW TO SEAL THEM 



Main types are: 



Zinc porcelain-lined 

 cap with shoulder 

 rubber ring, to fit 

 standard Mason 

 jar. 



When canning. — Fit wet rfng down on jar 

 shoulder, but don't stretch more than needed. 

 Fill jar. Then screw cap down firmly and turn it 

 back Vi inch. 



After canning. — As soon as you take jar from 

 canner, quickly screw cap down tight, to complete 

 seal. 



<^^r G '° 



ss lid 



Scols here 



Wire bail 



Lightning-type jar is 

 sealed with glass 

 lid and rubber ring, 

 held in place by 

 wire bail. 



When canning. — Fit wet rubber ring on ledge 

 at top of empty jar. Fill jar. Put on glass lid. 

 Push long wire over fop of lid, so it fits into groove. 

 Leave short wire up. 



After canning. — As soon as you take jar from 

 canner, quickly push short wire down to complete 

 seal. 



Glass lid and top- 

 seal rubber ring, 

 held in place by 

 metal screw band, 

 to fit standard 

 Mason jar. 



When canning. — Fill jar, fit rubber ring on 

 glass lid. Put lid on jar with rubber side down. 

 Screw metal band on tight . . . then, using your 

 thumb as a guide, turn back almost a quarter turn, 

 or so that band and jar just mesh together. 

 Caution: If the band is screwed too tight, the 

 jar may break. 



After canning. — As soon as you take jar from 

 canner, screw band down tight. 



Next day. — When jar has cooled, take off 

 screw band if you can without forcing. If the 

 band sticks, cover for a minute or two with a hot, 

 damp cloth, to loosen. 



Metal 

 screw band 



Metal lid with 



sealing 

 compound 



Seals here 



Flat metal lid edged 

 with sealing com- 

 pound, held in 

 place by metal 

 screw band, to fit 

 standard Mason 

 jar. 



When canning. — Fill jar,- put lid on so that 

 sealing compound is next to glass. Screw metal 

 band on firmly, but not so hard that you cut 

 through the compound. When screwed down 

 firmly, this lid has enough "give" to let air escape 

 during canning. 



After canning. — This is a self-sealer. Leave 

 "as is" when you take from canner. Don't tighten 

 further; you may break the seal. 



Next day. — When jar has cooled, take off 

 screw band if you can without forcing. If band 

 sticks, cover for a minute or two with a hot, damp 

 cloth, to loosen. 



Coffee or other 

 commercial jars — 

 "63 V'— with flat 

 metal lid edged 

 with sealing com- 

 pound, bought 

 new, held in place 

 by metal screw cap 

 that came with jar. 



From old metal cap pry out paper lining or 

 boil and scrape out sealing compound. Punch 

 from inside a small hole or two in the cap. Then 

 the cap will act as a screw band. 



When canning. — Fill jar. Put lid on, so seal- 

 ing compound is next to glass. Screw metal cap 

 on firmly, but not so hard that you cut through 

 the compound. When screwed on firmly, this 

 lid has enough "give" to let air escape during 

 canning. 



After canning. — This is a self-sealer. Leave 

 cap "as is" when you take from the canner. 

 Don't tighten further, or you may break the seal. 



Next day. — When jar has cooled take off 

 screvv cap if you can without forcing. To loosen 

 the cap if it sticks, cover for a minute or two with 

 a hot, damp cloth. 



