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 6685-01-655-4850
NSN 7035-00-800-0770
NSN 6645-01-114-3607
NSN 5975-00-553-7151
NSN 6105-01-424-0275
NSN 6685-01-025-7018
NSN 5855-00-944-0949
NSN 5985-01-264-0130
NSN 5835-01-395-6857
NSN 5990-01-272-4091
NSN 6610-01-546-6885
NSN 6220-00-262-0017