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 5855-01-383-6860
NSN 5985-00-277-7371
NSN 5895-01-180-6321
NSN 6320-01-331-6947
NSN 5910-01-182-6607
NSN 6645-01-315-2010
NSN 5965-01-087-8572
NSN 6240-00-732-4240
NSN 6135-00-134-6648
NSN 6610-01-316-3547
NSN 5910-01-325-6019
NSN 6645-00-287-9192