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 5925-00-885-9497
NSN 5965-01-046-9619
NSN 5945-01-029-3871
NSN 5998-01-118-2783
NSN 6105-00-942-5246
NSN 5895-00-975-7638
NSN 5905-01-446-4990
NSN 6240-00-928-7181
NSN 6320-01-294-7161
NSN 5990-01-565-2226
NSN 5895-00-330-5742
NSN 5998-01-102-4017