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 5975-00-583-8625
NSN 6645-01-353-9786
NSN 5985-00-782-6955
NSN 6685-01-285-1935
NSN 6645-01-303-6792
NSN 2925-01-448-2880
NSN 5950-01-537-0562
NSN 5965-01-435-6644
NSN 6610-00-056-4607
NSN 7035-00-562-9881
NSN 6610-01-281-7536
NSN 5996-01-386-6394