A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6145-00-398-4405
NSN 6110-00-514-2639
NSN 5985-01-221-0517
NSN 6130-00-905-7182
NSN 6130-01-394-9406
NSN 5998-01-389-7946
NSN 5985-00-509-1530
NSN 5945-00-236-2215
NSN 5945-01-411-4989
NSN 5985-00-824-0500
NSN 5985-01-351-5671
NSN 6610-00-159-1119