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 6150-01-521-2403
NSN 5905-00-957-7501
NSN 5935-01-588-6598
NSN 5905-01-570-4618
NSN 5905-00-192-4504
NSN 6220-01-575-0586
NSN 5985-01-282-4418
NSN 5999-01-022-2330
NSN 6110-00-236-4161
NSN 6105-01-203-0589
NSN 6685-00-008-5092
NSN 5925-01-475-5267