“Chico” probably stands for its manufacturer, the Crouse Hinds company. There are two parts—Chico A Sealing Compound and CHICO X Fiber.
Some hits…
Catalog description
http://www.crouse-hinds.com/CrouseHinds/pdf/469.PDF Applications: Sealing Fittings
http://www.appletonelec.com/PDF/I-2-3-21.pdf In many decades past, the ‘X-fiber’ was said to contain asbetotos wool. That has changed based on MSDS CHICO X Fiber or MSDS Chico A Sealing Compound
The ‘pour’ or proper installation is covered in 99NEC 501-5. Sealing and Drainage. (c) Class I, Divisions 1 and 2. (3) Thickness of Compounds.
[This message has been edited by Bjarney (edited 09-28-2002).]
