Large 1" Diameter Steel Cup Seal - Model Metal-Cup-L

Large Cup Seals provide tamper-evident housing to protect a screw or bolt head from unauthorized removal. Seals purchased online are printed SEALED SEALS.COM and uniquely numbered. Cap heights are available in 5/16" or 7/16" for taller bolt heads.
For additional colors & custom printing call (800) 342-0333

For Quantity Discounts Call

(800) 342-0333

Request a Quote/Sample

Product Information


Large 1" 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. Record seal number later verification.


Cup Seal tops can be printed with company name or logo and consecutive numbers. Both top and bottom can be matched number for added control and security.

Materials Available

Large Cup Seals are available in galvanized steel or 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.

Application Electronics/Machinery Inspection/Inventory Meter/Utilities Storage/Inventory