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 5905-00-920-7738
NSN 5930-01-068-3641
NSN 6620-00-140-8644
NSN 6620-01-327-3011
NSN 6685-01-033-9346
NSN 5960-01-495-0859
NSN 5965-01-448-1174
NSN 5855-01-070-4072
NSN 6135-00-686-4777
NSN 6645-00-084-1424
NSN 7035-01-232-7263
NSN 6105-00-943-8327