A dry seal plug is one having a tapered (3/4" diametral per 12") thread extending its entire length and designed to have its threads mesh tightly with those of a taper-threaded hole.  A flush type plug is one having a tapered (7/8" diametral per 12") thread extending its entire length and designed to provide a flush condition with a standard tapped hole
Unit of Measure
Items
STAINLESS 18 8 PIPE PLUG, HEX DRY SEAL 3/4 TAPER (INCH)

1/16 SOCKET PIPE PLUG (3/4 TAPER) 18-8 STAINLESS
Web Price QUOTE

STAINLESS 18 8 PIPE PLUG, HEX DRY SEAL 3/4 TAPER (INCH)

1/16 SOCKET PIPE PLUG (3/4 TAPER) 18-8 STAINLESS
Web Price QUOTE

STAINLESS 18 8 PIPE PLUG, HEX DRY SEAL 3/4 TAPER (INCH)

1/8 SOCKET PIPE PLUG (3/4 TAPER) 18-8 STAINLESS
Web Price $3,635.60

STAINLESS 18 8 PIPE PLUG, HEX DRY SEAL 3/4 TAPER (INCH)

1/8 SOCKET PIPE PLUG (3/4 TAPER) 18-8 STAINLESS
Web Price QUOTE

STAINLESS 18 8 PIPE PLUG, HEX DRY SEAL 3/4 TAPER (INCH)

1/4 SOCKET PIPE PLUG (3/4 TAPER) 18-8 STAINLESS
Web Price $2,062.99
Diameter N/A 1/16 N/A 1/16 N/A 1/8 N/A 1/8 N/A 1/4
Pitch N/A
Length N/A
Material N/A 18-8 Stainless
Finish N/A Plain
Package Quantity N/A 8000 N/A 100 N/A 3500 N/A 100 N/A 1800