Insert and Driver Shell Sizing Charts

Cross-Section of an InsertOur 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

Insert Selection Chart

Bottle Cap Torque Range Chart