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 6110-00-144-6763
NSN 5895-00-522-7935
NSN 5965-01-113-7400
NSN 6645-01-579-6304
NSN 6240-00-826-1349
NSN 5895-00-102-8738
NSN 5935-01-128-9127
NSN 5925-01-054-4226
NSN 6685-00-715-3881
NSN 6145-01-231-9169
NSN 5925-01-508-3209
NSN 5920-00-111-2375