Insert and Driver Shell Sizing Charts
Our inserts are in stock and ready to ship
Measure the diameter of the cap or closure and select an insert or driver shell that has a range that includes that diameter.
FOR BETTER RESULTS: When the diameter of your cap/closure is close to the Insert's UPPER Cap Range, choose the next larger size insert and shell
FOR BEST RESULTS: Send sample caps and bottles and our engineers will make a recommendation. Use the following shipping address.
SWAN-MATIC Test Division
7050 West Ridge Rd
Fairview, PA 16415