“seals of schools of artists” (liupainyin) of the Ming and Qing dynasties

Akkadian period cylinder seals seal inscriptions Kingship

all seals open

aluminum honeycomb seals

anhydrous mechanical seals

Annular Pressure Seals

auxiliary seals of nuclear coolant-pump

bearing box seals

Brush Seals

Ceramic-to-metal seals

Clearance seals

Compressive Seals

contacting mechanical seals

crankcase wear sleeves and seals

digital seals

Double Seals

dry (running) gas seals

Dry Gas Face Seals

Dry gas seals

dual loop seals