Small 3/8" Diameter Cup Seal is a tamper evident housing for screw and bolt heads. These tamper indicating devices are available with multiple sizes available to fit most bolts and screws.
Insert screw or bolt through bottom hole of seal and tighten. Snap on top half by hand.
Small Cup Seals are not available with custom print. Both Medium and Large Cup seals can be printed with company name and or logo and consecutive numbers.
Medium Cup Seals are available in galvanized steel or brass and copper.
Cup seals, also knows as cap seals provide effective protection against unauthorized removal of screws and bolts. Commonly used to protect gas meters, computer panels, and race engines.