The sealing of the capsule took place at PMI headquarters on December 29, 2000. Instructions were placed on the top of the capsule requesting it to be opened in the year 2025, the year PMI turns 50. PMI staff throughout the year added items to the capsule that had been produced over the Institute's 25 years as PMI (it was previously known as the Plumbing Brass Institute). These items included a copy of PMI's charter of incorporation in 1975, a copy of PMI's long range plan dating back to the early '80s, and letterhead and novelty items bearing PMI's new and old logos. The staff added items as well from the year 2000, PMI's 25th anniversary year, including a year 2000 calendar; a 25th anniversary celebration t-shirt, a 25th anniversary pen set; year 2000 issues of PMI News, Tech Talk and Washington Wire; and samples of industry trade publications from the year 2000. Also included were copies of year 2000 meeting minutes to touch on some of the "hot" industry topics, a list of PMI's Focus Issues, and the Institute's bylaws and position statements.

Donations from member companies were also solicited for the capsule. In addition to supplying year 2000 product literature and a complete history, Moen Inc. also donated a sample of its first filtering pull-out faucet. Neoperl Inc. donated aerator and flow regulator samples, in addition to company logo apparel and a company history and plant tour on CD-ROM. Similarly, Sloan Valve Co. donated a copy of its corporate video, and Price Pfister donated product catalogs and assorted brochures. Elkay Mfg., which celebrated its 80th anniversary in 2000, provided PMI with a copy of its 80th anniversary issue of the company's "Reflections" newsletter, and Haws Corp. donated a copy of its August 2000 PM Engineer "Manufacturer's Spotlight" article.