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 5945-00-733-8037
NSN 5950-00-905-6145
NSN 5999-00-529-6067
NSN 6105-00-490-4838
NSN 5965-01-028-4136
NSN 6685-01-542-0507
NSN 6110-01-400-4207
NSN 5935-01-580-0553
NSN 5965-01-296-8991
NSN 6610-00-010-9714
NSN 5985-01-217-7849
NSN 6685-00-947-6878