Check out Yankee Schooner for all your tape, POS materials, keg caps, collars, and basically ANYTHING printed.
Jillian has always been great getting pricing to me very quickly and the products are top notch.
Triad Products also sells the tape and other items.
Exhibit 'A' Brewing Co.
Framingham, MA USA
Filler of Vessels
Seller of Liquid
Barreled Beer Aging Specialist