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 5999-00-828-8313
NSN 6145-00-399-5201
NSN 5975-01-578-6592
NSN 6145-00-512-6675
NSN 5915-00-337-1314
NSN 5910-00-201-7551
NSN 5999-01-660-4286
NSN 4140-01-459-3136
NSN 5975-01-627-0651
NSN 5985-00-857-9920
NSN 5925-01-336-9869
NSN 4140-01-123-8801