These are one-piece white, plastic screw on lids meant for preserving jars for refrigerator storage of preserves that have been opened, or, for shelf-storage of dry goods such as beans, rice, etc.
Ball guarantees that theirs can also be used in the freezer: “Use Ball® Plastic Storage Caps can be used for storing foods in the fridge or freezer.”
They are not for use as shelf-stable canning lids.
Size guide:
Wide: 3.38"
Regular: 2.75"
BENEFITS:
The white lids look very tidy and clean in the fridge, and make the home preserves easy to spot amongst a jumble of other jars.
If you have someone you supply canned preserves to frequently, such as family or close friends, it can be a nice touch to give them a few of both sizes of lids to use — especially if you tend to give them jars with no screw bands on them.
The regular mason-jar mouth size (70 mm) will fit modern Kilner jars; the wide-mouth mason-jar size (86 mm) will fit Leifheit in Europe and modern Agee and Perfit jars in New Zealand.
DURABILITY:
They are relatively inexpensive, dishwasher-safe, can be used over and over, and in theory should last for decades.
DIMENSIONS:
- Height with Lid: 5 1/8"
- Lid:
- Diameter (Inside): 2 3/4"
- Height: 3/4"
MATERIAL:
- Lid: Polypropylene
- Liner: Polyethylene Foam (FDA compliant)
TEMPERATURE:
- Lid (Maximum): 230° F
- Withstands temperature changes less than 75° F without cracking.
USAGE:
- Not leakproof or airtight.
- While made of FDA compliant materials, it is recommended to clean jar before first use.
CAPACITY:
-
Measured in fluid ounces.
APPEARANCE:
- Slight seam runs from top to bottom.
- Part of the manufacturing process, not a defect.
SPECIFICATIONS:
- Unsterilized
- Not autoclavable
