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 5925-00-525-4037
NSN 4140-01-528-8364
NSN 6110-01-079-2737
NSN 6130-01-224-9853
NSN 6135-00-819-8074
NSN 5945-01-535-0951
NSN 6685-01-338-6131
NSN 5930-00-526-7645
NSN 6685-00-726-4890
NSN 5905-01-401-5325
NSN 5895-01-038-5781
NSN 6150-01-495-1946