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 6105-01-137-5739
NSN 5965-01-347-5878
NSN 6620-01-390-0839
NSN 5999-00-926-3241
NSN 5985-01-463-3283
NSN 5996-01-148-9926
NSN 5910-00-254-1220
NSN 5925-00-704-4491
NSN 5996-01-333-6644
NSN 5985-01-297-2724
NSN 6685-00-257-4088
NSN 6620-01-383-7519