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 6135-01-294-2131
NSN 5920-01-091-2276
NSN 5999-00-923-9795
NSN 5895-01-023-3227
NSN 5935-01-599-3935
NSN 6645-01-160-7707
NSN 6685-01-534-1907
NSN 5905-01-067-9850
NSN 5925-01-312-8746
NSN 6685-00-575-4647
NSN 6145-01-076-8202
NSN 5990-00-705-4350