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 5998-01-359-3404
NSN 5930-01-287-8544
NSN 5985-01-106-2924
NSN 6685-01-025-6145
NSN 2925-01-583-5619
NSN 5999-00-288-3143
NSN 5996-00-896-7086
NSN 5999-00-186-0058
NSN 6645-01-263-5481
NSN 6145-00-923-2141
NSN 5915-01-645-5662
NSN 5975-01-406-6596